In the modern building materials market, various sheet finishing materials are presented in the widest range. These are chipboard and OSB boards, various types of plywood, drywall and other modifications. Despite this, the DSP plate, the use of which is not limited only to internal work, deserves separate consideration.
The unique structure of the material, which consists of seemingly incompatible ingredients, provides DSP with characteristics that are not only not inferior to analogues, but also surpass them in some respects. Relatively low cost, strength and reliability, resistance to weathering and ease of installation make the material indispensable for any construction and repair work.
In most cases, for the installation of DSP boards, the use of a wooden or metal frame is necessary, so you should stock up on the necessary material and fasteners in advance.
What is DSP board
Wood shavings and cement are used to produce this unique building material. The wooden filler is preliminarily crushed and sorted, after which it is antiseptically treated with calcium and aluminum chlorides. The components are thoroughly mixed, and the resulting mass is poured into special forms. As a rule, the composition of cement-bonded particle board (DSP) includes:
- Portland cement - 65%;
- Wood chips - 24%;
- Water - from 8.5 to 9%;
- Hydration and mineral additives - from 2 to 2.5%.
To reduce internal stresses and more efficient pressing, a small amount of fuel oil, or industrial oil, can be added to the prepared mixture. The filled molds are stacked and pressed. Working pressure can vary from 1.7 to 6.5 MPa. To accelerate the hydration and hardening of the mixture, it is subjected to intense heating for 8 hours.
Important!
The elasticity of wood shavings compensates for the shrinkage of cement, therefore, even during the drying process, the dimensions of the boards remain unchanged.
After being removed from the formwork, the DSP slab is transported to a technological warehouse, where it dries completely in natural conditions. The final stage of production is hot air blowing, cutting, grinding and delivery to the storage site.
DSP plate: technical specifications
Before using the material, it is necessary to study its main operational and technical characteristics. Currently, according to GOST 26816-2016, the domestic industry produces two types of DSP boards, the characteristics of which are given in the table:
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Options |
TsSP-1 |
TsSP-2 |
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Index of elasticity in bending, MPa |
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Surface hardness, MPa |
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Thermal conductivity of the material, W/(m °C) |
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Specific heat capacity, kJ/kg °С |
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Resistivity of fastener extraction, N/m |
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Frost resistance of the material |
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Number of freeze/thaw cycles |
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Residual strength, % |
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Resistant to changes in humidity and temperature |
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Strength reduction (20 cycles), % |
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Sample thickness increase (20 cycles), % |
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Such operational characteristics allow the use of the material in a variety of areas of repair and construction work.
Scope of application of DSP boards
As mentioned above, DSP boards, the use of which ensures high mechanical strength of the created structures, are widely used in construction, repair and finishing works, in particular:
- When making formwork foundations and other monolithic reinforced structures. The use of DSP greatly simplifies the installation process, in addition, this design prevents concrete leakage and ensures the formation of smooth side walls that do not require subsequent plastering.
- For wall cladding and construction . In most cases, DSP sheets are attached to a pre-assembled metal or wooden frame. The thickness of the sheets in this case is from 8 to 12 mm. For fastening, self-tapping screws are most often used, it is also possible to use screws or nails as fasteners. In some cases, when leveling walls, special adhesive polymer mixtures can be used.
- The use of DSP floor slabs provides high mechanical strength, as well as high rates of heat, hydro and sound insulation. The thickness of the material is selected based on the existing loads and the distance between the lags, however, the use of DSP boards with a thickness of less than 14 mm is not recommended.
- Application for facade at home allows not only to significantly reduce the time for exterior finishing work, but also provides high-quality waterproofing of the main walls. Another advantage is that when using DSP, the characteristics of the material allow you to create various types of ventilated facades. As for the thickness of the sheet, for outdoor work it can vary from 12 to 14 mm.
DSP plate: dimensions and prices
Regardless of the brand, TsSP-1 or TsSP-2 (GOST 26816-2016), the sheet size can be:
- Thickness: 8-40mm, in 2mm increments;
- Length: 2700/3200/3600 mm;
- Width: 1200/1250 mm;
Depending on the thickness and overall dimensions, the weight of the sheet can vary significantly:
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Overall size, mm |
Weight, kg |
The table shows that thick DSP sheets have a significant mass, therefore, when working with them, it is desirable to use various lifting devices.
Ways of fastening DSP panels
Depending on the thickness of the DSP sheet and the type of work performed, the fastening can be:
- With an open seam on the screws;
- With an open seam on nails;
- With a closed seam on the screws;
- With a closed seam on nails;
- Using an aluminum profile;
- With the use of a decorative rail.
The last two methods are most often used in the decorative processing of facades.
Varieties of DSP: characteristics and their application
Depending on the structure of the wood filler, features and, a number of modifications were developed on the basis of DSP:
Fiberboard . As a connecting element, thin long shavings of coniferous species are used. The mechanical properties of the filler contribute to an increase in fibration, which significantly increases the strength and elasticity of the material. The surface hardness of the semi-finished product is somewhat less than that of the DSP. As a rule, fiberboard serves as good sound insulation.
BUT RBO litas . As a filler, waste from the woodworking industry, dry reeds and even cereal straw are used. Despite the fact that the manufacturing technology remains unchanged, the strength properties are noticeably lower than those of the DSP. The main area of application of the material is the sheathing of the load-bearing frames of internal partitions, heat and sound insulation.
Xylolite . Sorel cement provides high resistance to moisture and water. Due to this, the material is widely used in facade cladding. Subflooring and roofing installation.
How to prime CSP
Before proceeding with the final finishing of the surface of the DSP boards, it must be treated with a primer, preferably deep penetration. For interior work, you can use the time-tested primer Ceresit ST 17, but its cost is quite high. There are other deep penetration acrylic compositions that are not much inferior to ST 17 in quality, and their cost is noticeably less.
You can also make a primer yourself by carefully dissolving 1 kg of PVA glue in 10 liters of water. Such a mixture is significantly inferior to deep penetration primers, but still better than nothing.
For the processing of facade cladding from DSP, the use of a special primer is mandatory, otherwise the painting will end in disaster in a very short time. A 10% solution of acrylic facade paint can be used as a primer.
How to paint DSP board
To give DSP boards an attractive appearance, the easiest way is to paint. After appropriate surface preparation, two coats of paint are applied with or. Most often, in order to paint the DSP, they use:
Acrylic paints . This paint has good adhesion and is highly wear resistant. If financial possibilities allow, it is better to use paints that include a solvent, but water-soluble facade acrylic paints, if properly applied, will last from 3 to 5 years.
latex paint . This coating is resistant to alkaline and mild acid solutions, easy to wash and mechanically clean with detergents. Besides. Painting work can be done independently, which will save a significant amount.
silicate paint . The use of this type of coating has high adhesion, their vapor permeability provides optimal conditions for air circulation, which prevents the appearance of mold and other fungi. The coating is not afraid of atmospheric influences and detergents, and the service life will satisfy even the highest requirements.
Before proceeding with the painting of the CBPB, it should be taken into account that the use of alkyd paints is undesirable, since cracking and peeling of the coating may occur upon direct contact with alkalis.
Advantages and disadvantages of using DSP board
Like any material, DSP, against the background of indisputable advantages, has some disadvantages, let's take a closer look at the pros and cons of DSP panels, the characteristics of which were given above. The advantages of the material include the following properties:
- High strength;
- DSP sheets, even with a small thickness, provide a high degree of sound insulation;
- Cement particle board does not burn even at very high temperatures;
- Even without additional processing, it has antiseptic characteristics;
- Vapor permeability;
- Water resistance.
The disadvantages of the material are less significant:
- The large specific gravity of the plate, which makes installation work difficult;
- Insufficient strength under bending loads;
- The complexity of cutting and increased and a large amount of dust when cutting with power tools;
In order to draw final conclusions, it will be useful to study the reviews on the Internet, here are some of them.
Cement particle board: consumer reviews
Positive reviews confirm the above advantages of the material:
- I decided to use DSP slabs for flooring. I laid a 26mm thick slab on a crushed stone pillow. After that, I laid waterproofing and mineral wool, attached logs. The draft floor was covered with 16 mm slabs, on top - ordinary linoleum. Very satisfied with the result, dry and warm. Nikolai, Stavropol.
- Family circumstances forced to install an interior partition. Drywall seemed not strong enough, I decided to use 8 mm DSP. Installation on a wooden frame 50x50 mm did not take much time, and cutting was not very tiring. It remains to putty and wallpaper to glue. The design turned out to be strong and reliable, very satisfied, good material. Andrew. Kharkiv.
In negative reviews, most of all complaints about the large weight of the material and other difficulties during the installation process:
I have been building and decorating for 15 years. The last object can be considered a year-for-two! The fact is that the customer decided to use 16 mm DSP instead of drywall for internal partitions, and decided to sheathe the facade with it. We did not have any lift, we fixed it manually. Perhaps the material will justify itself, but it is very difficult to mount. Victor. Ryazan.
As soon as I started cutting the DSP for the partition, I immediately realized that I had made a terrible mistake. I cut it with a grinder with a diamond blade, there was no dust except in the next block! No more desire to cut DSP boards indoors. Alexei. Novosibirsk.
In the case of facade cladding, negative reviews are practically not found:
Outside, the house is sheathed with DSP panels and painted, a layer of polyethylene and mineral wool was laid under it. Two years in the house dry and warm, outside - no fly agaric, cracks and mold, very satisfied. Karina. Volgograd region.
Facing the DSP garage with slabs did not cause me any difficulties. I used the 12 mm version and a wooden strapping made of pine timber 50x50 mm. I looked through horror stories about possible cracks due to thermal expansion and decided to leave decorative seams, well, it seems to be intended. I painted it with facade paint and for the third year now there have been no problems. Yuri. Smolensk region.
After carefully analyzing the operational properties of DSP panels, and consumer reviews, we can draw the following conclusions:
- The material is quite budgetary;
- The price / quality ratio is acceptable;
- Simple installation technology allows for self-installation;
- Inconvenience during installation due to the large specific gravity of the material;
- When cutting, there is a high dust content.
In general, DSP slabs are in demand for both interior, exterior and landscaping.
In private housing construction, the choice between wood and stone is the most fundamental issue before starting work. Both materials have their pros and cons. What happens if you combine the useful properties of cement and wood in one material? Get DSP (cement particle board). It will be discussed in this article: we will try to figure out what varieties are and how easy it is to choose a DSP.
Features of cement particle boards
The material is a symbiosis of wood and cement. Unlike other particle boards, it does not contain any synthetic resins, the main binder is cement. Use cement with strength grade M500. Wood chips are sorted into fractions and stabilized. Also, chemicals (aluminum sulfate, sodium silicate) are added to the product, which prevent the process of decay of wood ingredients and eliminate the negative effect of the chip component on cement. All ingredients are mixed with the addition of water in an industrial mixer. The products are then molded and pressed dry using compressed air.
Compared to other wood-based panels, DSP has a number of features.
- Environmental friendliness- the material does not contain any synthetic resins, which are contained in chipboard, OSB or fiberboard. Therefore, those who are concerned about the formaldehyde content in composite products should pay attention to DSP.
- High stability- Cement particle boards have high wear resistance and moisture resistance. They absorb moisture less than other wood-composite products, while retaining their overall shape - they do not swell.
- Strength allows the use of DSP as a structural material, cement boards are superior to other composite counterparts such as fiberboard and OSB (oriented strand board).
Frame house with DSP walls
Oriented strand board is a composite material consisting of large pieces of wood chips, which are arranged in layers and pressed into monolithic boards. Formaldehyde resins act as a binding element. Products are sensitive to moisture and are easily deformed under its influence. can be a great alternative to OSB in the construction of frame houses.
- Fire safety- another plus "in the piggy bank" of the DSP, the composition of the plates does not contain resins and glue, which, when exposed to fire, will burn and generate a large amount of smoke. Portland cement, which is most often used for production, does not support the combustion process. By class, the material belongs to low-combustible substances (G1).
- Biological stability- cement is not a favorable environment for the reproduction of fungi and insects, therefore this misfortune, characteristic of some types of wooden houses, bypasses houses made of DSP.
- Good adhesion with finishing materials- Cement particle board lends itself well to finishing, plastering. The sheets have good adhesion to the applied finish.
Speaking about the advantages, one cannot fail to mention the disadvantages of cement boards. Often the choice in favor of frame construction is made due to the fact that DSP is more expensive. Another significant disadvantage is a lot of weight. Working alone in the production of finishing work with cement-bonded products is difficult. Also, significant weight makes it difficult to transport products. Cutting causes certain difficulties, since during this process a large amount of cement dust is released.
DSP cutting is carried out with a diamond disc
Physical and technical characteristics
According to state standards, it is divided into two brands depending on the quality of the products. At the same time, the main physical and technical parameters do not differ. According to GOST, the density of both brands should be 1100 - 1400 kg / m3. According to the standard, several standard sizes are allowed. In length it is 3200 and 3600 mm, in width - 1200 and 1250 mm. The release of other dimensions is allowed in agreement with the end user.
Another important parameter is moisture resistance. It consists of base moisture and moisture absorption, i.e. the amount of water relative to the total volume that the product can absorb. The basic moisture for both brands of product should be between 6 and 12%. Moisture absorption by standards should be no more than 16%, while the change in thickness (swelling) cannot exceed 1.5%, while for some types of wood-based panels this figure can exceed 20%
Now we need to move on from the common points to the differences.
- TsSP-1- have a more even surface, for this brand deviations from the plane of the plate are allowed by only 0.8 mm, oil stains and chipped edges are not allowed. There may be no more than one dent up to 1 mm deep on the surface. The allowable bending strength depends on the thickness of the sheet and cannot be less than 12 MPa for 12 mm thick DSP, for sheets over 19 mm the allowable bending strength is 9 MPa.
- TsSP-2 designed for lower bending strength. For a slab of 12 mm, this indicator should be at least 9 MPa, for a slab of more than 19 mm - 7 MPa. Also this brand has more defects. For example, there may be oil and rust stains on the surface, there may be dents more than 2 mm deep on the surface (the maximum allowable number is 3 pieces).
Some materials are often referred to as varieties, although they are not. It's just that these products are very similar in terms of production method, structure and properties.
Fiberboard- cement-fiber material, in the production a long wood fiber is used, which forms the slabs. Fiberboard has low thermal conductivity, fire resistance and is used for insulation. CSP significantly surpasses it in density and strength.
Arbolit made from a mixture of chips, sawdust and wood chips with cement. The material is used not only as thermal insulation, but also for the construction, walls and partitions. Arbolit produces in the form of blocks, slabs or ceilings.
Walls made of arbolite slabs retain heat well due to low thermal conductivity
Xylolite It is made on the basis of shavings and lightweight concrete. The main scope of application is self-leveling seamless floors and partitions.
Choice according to application
It is used as a heat-insulating, finishing and structural material, so the scope is quite extensive.
- Construction of a frame house- cement slabs are used for the construction of frame houses. In this role, they replace cheaper, but less moisture resistant, oriented strand boards. DSPs serve to stiffen the frame and create a power building at home. The distance between the racks should be no more than 60 cm. The plates allow you to form a "pie" of a frame house, which consists of several layers of lathing, racks, thermal insulation, vapor barrier and wind protection. On the outside of the house, it is lined with siding or plastered. For walls, sheets with a thickness of 12 - 18 mm are usually used.
Sheathing the frame of the house with cement particle boards
- Rough wall finish- in this case, products made of cement and shavings are used to level the surface of the wall covering. The material is well suited for subsequent painting or wallpapering. In this case, it is better to choose products of the first grade; for finishing methods, when the outer side of the sheets is covered with other material, products of the TsSP-2 brand are used.
Wall finished with CSP sheets
- Roofing - cement chip products are used to create a base for a soft roof. Sheets are laid on a crate or truss system. In this case, the thickness of the sheets should be selected based on the pitch of the rafters. Most often, sheets with a thickness of 16 to 24 mm are used.
- Draft floors can also be done with cement-bonded particle boards, they provide heat and sound insulation. Installation is carried out on logs or a concrete screed. Such a coating is most often used to level the surface before laying the final floor. The appearance of the material does not play a special role, since it will be hidden under the laminate or parquet, so you can use the TsSP-2 brand. At the same time, it is important to choose the right thickness of the sheet, which, when mounted directly on concrete, can be 18 - 20 mm. During installation, the lag system is affected by the distance between the bars. For gaps of 60 cm, it is optimal to use plates of 20 - 26 mm.
Laying the subfloor on the lag system
has high moisture resistance and can be in the ground for a long time, this property is used to create temporary floors directly on the ground. Such coatings are used for placing building materials and for temporary buildings.
- Internal partitions allow you to delimit the interior space in the house into rooms. Due to its good moisture resistance, the material can be used to divide a combined bathroom into two rooms (bathroom and toilet). If painting is planned as a finish, then it is better to choose a grade of material with the least number of external defects (DSP-1).
The partition has a complex structure, the frame is made of galvanized profile, mineral wool is used as a heater and heat insulator. DSP acts as an element that gives the structure the necessary strength
- Fixed formwork- for pouring foundations or other architectural forms with concrete, DSP can be used, they have good wear resistance and tolerate high humidity, while the products are not deformed, so they are not removed when the concrete hardens and perform a shaping function for various structural elements. For example, cement particle boards are suitable for creating columns. Compared to the use of other wood-based panels (plywood, OSB), the material practically does not change its geometry and does not swell.
Cement particle board formwork
- window sills can also be made from small cement particle boards. To do this, you can use plates more than 10 cm in thickness.
- Door trim- due to moisture resistant properties, the material can be used for finishing external doors. For example, cement chip products are used to improve the sound and heat insulation of balcony doors. In addition, the material can significantly improve the refractory properties of the structure.
- Arrangement of a summer cottage- TsSP is used for construction of fences and protections. The material does not deform from contact with the ground, so it can be used to create beds. Also, cement slabs are suitable for the construction of utility rooms for storing tools and garden tools.
Beds made of cement-bonded particle boards
Conclusion
It is a good alternative to the usual wood-based boards based on wood and synthetic resins. The material has high moisture resistance and is harmless to humans. Cement particle boards are equally well suited for interior and exterior decoration, as well as for ancillary work.
Building yard
DSP: classification, selection and scope
Sheet building materials are used in many types of construction work, which are commonly called "dry". One of these materials is the DSP board. This is a durable material that can be used in the construction of frame houses and outbuildings, for interior and exterior finishing work.
What is a DSP board
Cement particle board (DSP) is a leafy building material made from high-quality cement (Portland cement) mixed with thin long wood chips (according to GOST 26816, chip thickness is 0.2-0.3 mm, length is from 10 mm to 30 mm) . Aluminum sulfate and liquid glass are added to the composition. When kneading, water is added (about 8% of the total mass). The resulting substance is molded in the form of plates, pressed.
DSP plate - sheet building material for interior and exterior work
Some manufacturers of DSP boards are made from several layers. They separately knead compositions with smaller and larger chips. A mixture with large chips is used for the inner layers, giving greater strength. Outer layers are formed from the composition with finer chips, which makes its surface smoother. The folded "pie" enters the press, resulting in the formation of a monolithic DSP slab with improved characteristics.
It is also worth mentioning that there are polished and unpolished DSP boards. Sanded can be used for interior or exterior decoration in those works, after which finishing work can immediately follow. There are also DSP finishing slabs, on one of the surfaces of which a finishing layer is formed in the form of stone or brickwork, decorative plaster, etc.
Application area
DSP is mainly used in dry mounting technologies. They are good for the construction of frame houses, as they do not emit harmful substances, have high strength, low combustibility, emit a small amount of smoke during a fire, and do not spread fire. Having high mechanical strength, they increase the rigidity of frame structures. All this makes frame houses sheathed with DSP safer and more reliable.
Objects to use DSP
Sheet DSP can be used in the construction of the following facilities:
- Frame houses up to 3 floors inclusive.
- Industrial, office buildings.
- Hotel complexes.
- Kindergartens, schools.
- Medical institutions.
- Sport halls.
- Warehouses, hangars.
Disadvantage: DSP slab has a significant mass (several times heavier), which increases the requirements for the foundation. Solid weight also becomes a problem when climbing to the second floor - you need helpers and or lifting equipment (at least a winch). Another disadvantage of DSP is its low resistance to bending loads. This limits their scope - they are placed on the base, in places with a small bending load, or must be mounted vertically.
Resistance to weathering and high humidity, fungi and bacterial infections, allows the use of cement-bonded sheets in the construction of outbuildings: sheds, garages, cellars.
For finishing exterior and interior works
Another area of application of cement particle boards is the leveling of floors and walls. Compared to other materials, the DSP board has the best soundproofing characteristics, is not affected by fungi, and is well tolerated by climatic influences. Therefore, they are often used to create ventilated facades.
For interior decoration, DSP boards can be used for the following works:
- Soundproof and fireproof partitions and walls.
- Interior lining of premises for any purpose (residential and non-residential, including those with high humidity).
- Window sills.
- Draft floor.
- Ceilings.
The positive point is that there are cement-bonded particle boards, polished and unpolished. Polished have an absolutely smooth surface. When using them, you can only seal the seams and then paint, wallpaper, use other finishing methods.
Characteristics and properties
DSP slab is a relatively new material, not yet widely used in private construction. All because not everyone understands how he behaves in the long run. To understand whether it is good or not for your purposes, you need to know about all the properties.
Density and Mass
Density of DSP is 1100-1400 kg/m³. High density gives frame structures an increased level of rigidity. If this material is used for interior decoration, such walls have sufficient load-bearing capacity to hold shelves, cabinets and other fairly heavy items.
The material is quite thick and heavy. One sheet with a height of 2700 mm - depending on the thickness - weighs from 37 kg to 164 kg. This makes the lining of the second floor and above inconvenient. This can be considered a disadvantage.
Thermal and moisture expansion
For construction, such a characteristic as linear expansion with changes in humidity and temperature is also important. For the DSP board, it is present, but it is small. When the plates are located one next to the other, it is recommended to leave a gap of 2-3 mm between them. When installing the second row (in height), the recommended gap is 8-10 mm.
- Normal humidity at the sale is 9% (±3%).
- Low water absorption allows the use of this type of material for exterior decoration, for wall cladding in rooms with high humidity. When in water for 24 hours, the limit of thickness increase is no more than 1.5%. That is, when wet, they almost do not change size.
What else is worth knowing: when immersed in water, the dimensions change slightly - 2% in thickness and 3% in length. If the material is made according to technology, then even with a long stay on the street under the open sky, it does not change for years.
Strength indicators and installation features
Cement particle boards do not tolerate bending deformations well, but have very high strength under longitudinal loads. Therefore, they are used for mounting on vertical surfaces. Manufacturers do not recommend putting them on logs, but when laying on a subfloor or a rough screed, the material behaves stably. Since the DSP plate is not afraid of water ingress, it can be laid on the floor in rooms with high humidity.
Elastic modulus:
- in compression and bending 2500 MPa;
- for tension - 3000 MPa;
- in shear - 1200 MPa.
If the DSP is mounted on a frame, a crate is required with a step of at least 60 cm. During installation, fasteners are installed in increments of 20 cm. We install self-tapping screws not only along the perimeter, but also along the intermediate rivers of the crate. In this case, tiles can be glued onto the DSP board (primer, after it dries, tiles can be laid without adhesive composition).
Fire and frost resistance
The DSP plate belongs to slow-burning materials; fire does not spread over the surface; toxic or harmful gases are not emitted during combustion. Fire resistance limit (ability to contain fire) - 50 min. This means that the material will break down after 50 minutes of exposure to fire.
High frost resistance - a decrease in strength after 50 freeze / thaw cycles is not more than 10%, which allows the material to be used for building houses even in the Far North. The service life of this material on the street is 50 years.
It is these properties that make DSP the preferred material in. The structure is more reliable in terms of fire safety.
Soundproofing properties
The DSP plate has good soundproofing characteristics and can be used for sheathing exterior or interior walls:
- reduction in the level of airborne noise for a plate with a thickness of 10 mm - about 30 dB, for 12 mm - 31 dB;
- reduction in the level of impact noise for slabs laid on reinforced concrete floors - with a thickness of 20 mm is 16 dB, with a thickness of 24 mm - 17 dB;
When using additional intermediate layers, impact noise becomes quieter by another 9-10 dB. That is, frame walls sheathed with DSP boards retain enough sounds to keep the house quiet.
The best combination is a combination of cement particle board and mineral wool. Mineral wool also serves as a heater, because due to the uniformity of the CBPB it has a small thermal resistance (it is not a heat-insulating material).
Performance characteristics
DSP boards are characterized by high vapor permeability - 0.03 - 0.23 mg / (m h Pa). This is about the same level as natural wood. With the right selection of the wall sheathing cake, the humidity in the rooms will be regulated naturally.
In addition, the DSP board has a high resistance to decay. This happens due to the natural process of formation of calcium hydroxide, which is formed when cement is converted into concrete and alkalizes the material so that it becomes an unfavorable habitat for fungi, insects and putrefactive bacteria.
Dimensions and weight
When purchasing materials for construction and finishing works, such characteristics as the dimensions and weight of the material are important. DSP sheets are available in two sizes: with a width of 1250 mm, the length can be 2700 or 3200 mm. In this case, the thickness of the DSP plates can be 8, 10, 12, 16, 20, 24, 36 mm.
It is clear that the thicker the plate, the greater its mass. Approximate weight values are given in the table (different manufacturers may have deviations both in the direction of increasing and decreasing in weight).
Weight of cement particle boards depending on dimensions and thickness
You may also need the following settings:
- area of one sheet:
- 1250*2700 - 3.375 m²;
- 1250*3200 - 4.0 m²;
- the weight of a cubic meter of CSP is 1300-1400 kg.
The DSP sheet is a homogeneous monolithic material without air inclusions, which explains the high thermal conductivity of the material. This must be taken into account when developing a warming pie. The material adheres well to wood, polymers and metal, so it is convenient for construction work.
Mounting methods
The DSP board can be fastened with nails or self-tapping screws. When mounted on a frame, the boards must be mounted strictly vertical.
Scope of cement-bonded particle boards in private construction
For fastening cement-bonded particle boards, you can use:
- Galvanized screw nails with a diameter of 2.5 mm. The length is selected depending on the thickness of the sheet and the entire cake. The pinched part of the nail must be at least twice the plate thickness, but not less than 10 nail diameters.
- Screw and self-tapping screws with pre-drilling holes for the heads. The length is chosen according to the same principle.
When installing DSP boards, it is necessary to strictly monitor the number and order of installation of fasteners: the material has a large mass, so fasteners must be installed at least recommended values. The distance between nails or self-tapping screws depends on the thickness of the plate and is indicated in the table.
Each sheet of cement-bonded particle board is fixed along the perimeter, retreating a certain distance from the edge of the sheet. The installation frequency along the long and short sides of the sheet is the same, but depends on the thickness of the material. In addition, there is also an intermediate mount - in the middle of the height. Here the frequency of installing screws or nails is two times less than along the perimeter.
Processing and finishing methods
Despite the fact that cement particle board is much stronger, it is processed with the same tools: a milling cutter, saw, electric jigsaw. The difference is that you need to use more durable files.
For drilling, the use of a drill with a hard tip is recommended. You can use both a manual and electric drill. Grinding this material is not recommended, since this work removes the top layer, which increases water absorption. But when docking, sometimes it becomes necessary to equalize the height. In this case, any type of grinder can be used. The recommended sandpaper grit is #16-25.
Please note that in order for the seams between the plates not to crack, the seam must be at least 4 mm in the inner section, and not less than 8 mm in the outer section. The distance is large, it can be closed with special rails (usually used for exterior decoration) or with an elastic band or sealant.
As a finish, the DSP board can be painted or covered with plaster. When exterior finishing, the joints between the plates are often simply painted over, leaving them unsealed. Another option is to use an aluminum profile lining that emphasizes the seams. You can also close the seam with a strip.
For interior decoration, the seam is filled with a sealant, which, after drying, retains elasticity. After that, you can plaster. The second option is to lay a special elastic cord, on top of which elastic plaster is again applied.
In modern construction and finishing works, the term DSP is often found. The abbreviation stands for cement particle board, and it is one of the popular and high-quality building materials.
Thanks to innovative manufacturing technology, DSP boards have unique characteristics that are noticeably higher than those of wood-fiber counterparts, drywall and plywood. Consider the key advantages of this building material.
Main technical characteristics
Cement particle boards are made from crushed wood chips and cement, adding substances to the composition that completely eliminate the conflict of materials. The raw materials are stacked one by one, forming a multi-layer sheet with special properties, which is formed by a hydraulic press.
As a result, DSPs have the following characteristics:
Sound insulation indicators - up to 45 dB.
The change in standard dimensions during prolonged exposure to a humid environment is no more than 0.3-2%.
Resistance to bending and stretching - 2,500-3,000 MPa, respectively.
Fire safety - class G1 (low combustible materials).
The average service life is up to 50 years.
It should be noted that DSP boards are resistant to temperature changes, are well processed and are not subject to mold formation. The disadvantages include dependence on environmental humidity: if the material is in contact with water for a long time, the service life is reduced to 15 years.
Burning or not?
The combustibility of the material is one of the key issues of interest to builders and finishers. Due to the fact that wood is included in the composition, cement-bonded particle boards can catch fire, however, this requires prolonged exposure to high temperatures.
When in a completely blazing house, the DSP needs to contact with fire for at least an hour before igniting. In addition, the material does not contain active chemical components, so even in case of fire there is no threat of poisoning by combustion products.
The composition of the DSP board
In the manufacture of cement particle boards, manufacturers are guided by the GOST standards that apply to this type of building materials. In particular, the following ratio of components that make up the finished product is used:
Portland cement - not less than 58%.
Additional impurities - 2.5%.
Crushed wood shavings - not less than 30%.
It should be clarified that the percentage of raw materials used must be indicated on the packaging. Here are the data recommended by GOST, which may differ slightly for the products of some manufacturers. However, when choosing a material, you need to focus on the given values: this is a guarantee of the quality and strength of DSP boards.
Application
The main scope of this material is to increase the thermal insulation properties and sound insulation of rooms. Therefore, the material is often used in private residential development and in the construction of commercial and industrial facilities.
Cement particle boards are optimally suited for interior and exterior walls, floor preparation for finishing. In addition, the material is often used for arranging interior partitions.
Regardless of the scope of application, DSPs are guaranteed to withstand the service life declared by the manufacturer, which is about 50 years!
Standard sizes
As already mentioned, DSP boards are manufactured in strict accordance with GOST standards, respectively, they have strictly defined external parameters. If we talk about standards, the following sizes apply here:
Sheet length - 2 700/3 200/3 600 mm.
Width - 1 200-1 250 mm.
Thickness - 8-36 mm.
It should be clarified that these data are relevant only for products of domestic manufacturers. The European construction market has different standards.
Sheet weight
In the table above, the data is given in a separate column. The mass of the sheet directly depends on two fundamental factors: the thickness and area of the product. At the same time, the length and width of the sheet is usually standard, only the thickness changes, which largely determines the operational characteristics and scope. Let's look at the change in the weight of a standard sheet (3200*1250 mm) depending on the thickness. It looks like this:
Thickness 10 mm - weight 54 kg.
12 mm - 64.8 kg.
16 mm - 80 kg.
20 mm - 108 kg.
The mass of the most dense sheets can reach up to 194 kg, however, such material is not very convenient for independent work. For wall cladding and arranging interior partitions, sheets are usually used, thickness 16-20 mm.
How to cut this material
It’s worth clarifying right away that it’s better to cut cement-bonded particle boards in production workshops: the work is very dusty and requires a special tool for an even cut. At home, you can use the following devices:
The working surface of the tool must be made of carbide materials, the rotational speed of circular saws: no more than 200 rpm.
To minimize indoor pollution and reduce dust, it is recommended to spray the surface of the material being cut with water, prepare a vacuum cleaner to suck up fine particles.
List of verified manufacturers
In the Russian market, there are several proven companies that produce quality products that meet GOST standards. When choosing a DSP, you can pay attention to the following manufacturers:
CJSC "TAMAK". The company is located in the Tambov region, is engaged in the production of cement-bonded particle boards according to domestic and European standards (EN 634-2). Products are solid monolithic sheets without the slightest defect.
CSP-Svir LLC. The company operates in the Leningrad region, filling the market with quality products. Characteristic features of finished sheets: polished or calibrated light gray surface. The production uses German equipment, which ensures the production of DSP boards according to Russian and European standards.
CJSC "MTI". The production line of the company is located in the Kostroma region. Finished sheets have a clear geometry, comply with Russian quality standards, and are sold in an affordable price segment.
OOO "Stropan". The company operates in the Omsk region. The main characteristics of the finished sheets look like this: thickness from 10 to 36 mm while maintaining standard dimensions, material elasticity - 3,000 MPa, excellent thermal conductivity and sound insulation.
ZSK LLC. The company is located in the city of Sterlitamak, Republic of Bashkortostan. Let out production has standard standard sizes corresponding to GOST, differs in resistance to aggressive influence of environment and differences of temperatures.
It is important to clarify that all Russian companies producing cement-bonded particle boards work on equipment from Western manufacturers. This helps to produce quality products at affordable prices.
Good to know when installing
It must be remembered that it is necessary to work with cement-bonded particle boards very carefully: the large area of \u200b\u200bthe sheet makes it fragile, so installation is carried out by at least two people.
In addition, DSP boards are not laid closely, expansion joints must be left. The composition of the material includes wood, which tends to expand under the influence of a humid environment. Given this feature, it is not recommended to fill the joints with putty. It is better to use a sealant that will not interfere with the expansion of the DSP boards.
High operational and technical parameters of DSP (cement particle board): its dimensions, weight, cost and other physical characteristics put this building material in the TOP demand rating in modern building technologies. For any size of CSP, the technical characteristics make them universal in use, since the working composition includes small wood chips or large sawdust, and high-quality cement with additives that level out harmful reactions between the components. The production and use in housing construction of DSP is environmentally safe. The production itself is based on the mineralization of substances, so harmful emissions into the atmosphere are excluded.
Characteristics of the DSP
The manufacturing technology consists in the formation of a three-layer base of cement and chips. Large chips are pressed inside, for this a high-pressure hydraulic press is used. Finished cement-bonded particle boards have a solid structure, which does not delaminate or crack under various external influences.
In the construction industry, cement particle board, the characteristics of which make it possible to replace such products as drywall, chipboard, plywood and other sheet building materials, is suitable for sheathing the exterior or interior walls of buildings, it is used to line columns, it is used as a screed for a subfloor or flat roof, and screen ventilated facades .
- Specific density of products - 1100-1400 kg / m 3;
- The standard weight of a plate measuring 2700 x 1250 x 16 mm is 73 kg;
- Indicators of elasticity in compression and bending - 2500 MPa, elasticity in tension - 3000 MPa; with lateral loads - 1200 MPa;
- Deformation after a daily stay in water: height - 2%, length - 0.3%;
- Sound insulation - 45 dB;
- Thermal conductivity parameters -0.26 W/m °C;
- Combustibility G1 - refers to low-combustible materials;
- At normal humidity indoors it can be used up to 50 years.
Positive aspects of products:
- Environmentally friendly products in the form of plates, panels or sheets of different thicknesses;
- High frost resistance;
- Fire safety and fire resistance;
- Moisture resistance and thermal insulation make the use of products in demand when finishing any surfaces;
- Calcium hydroxide (Ca(OH)₂) in the composition of the product prevents rotting, mold and fungal diseases;
- Good resistance to longitudinal loads and deformations;
- The characteristics of the csp allow the use of plates in the same design with wood, polymer elements, metal and glass;
- Easy to machine - cutting, sawing, drilling;
- Ease of installation and cost-effectiveness when working with the material;
- Universal application in finishing works;
- They do not accumulate static electricity, do not interfere with the passage of electromagnetic fields of natural origin, according to their properties they are referred to as heaters.
The use of plates - floor screed of the second floor Flaws:
- The heavy weight of cement-based slabs makes it difficult to install them on the upper floors without the use of special equipment, which causes unnecessary costs;
- When used outdoors, the guaranteed service life is reduced by a factor of three - up to 15 years.
Construction DSP boards are produced in accordance with the requirements of GOST 26816.
| Dimensions of one plate, cm | Weight of one plate, kg | The area of one plate, m 2 | The volume of one plate, m 3 | Standard weight of products in 1m 3, tons | Plates in m 3, pieces | ||
| Length of the product | Width | Thickness | |||||
| 270 | 125 | 0.8 | 36.45 | 3,375 | 0.027 | 1,3 | 37.04 |
| 1.0 | 45.56 | 0.0338 | 29.63 | ||||
| 1.2 | 54.68 | 0.0405 | 24.69 | ||||
| 1.6 | 72.90 | 0.054 | 18.52 | ||||
| 2.0 | 91.13 | 0.0675 | 14.81 | ||||
| 2.4 | 109.35 | 0.081 | 12.53 | ||||
| 3.6 | 164.03 | 0.1215 | 8.23 | ||||
| 320 | 125 | 8.0 | 43.20 | 4,000 | 0.032 | 1,4 | 31,25 |
| 1.0 | 54.00 | 0.04 | 25.0 | ||||
| 1.2 | 64.80 | 0.048 | 20.83 | ||||
| 1.6 | 86.40 | 0.064 | 15.63 | ||||
| 2.0 | 108.00 | 0.08 | 12.5 | ||||
| 2.4 | 129.60 | 0.096 | 10.42 | ||||
| 3.6 | 194.40 | 0.144 | 6.94 | ||||
When placing an individual order for a CBPB with original characteristics, CBPB products are manufactured in free sizes, for example, 3050 mm long, 3780 mm long, etc. The width also changes according to the customer's request, while the thickness remains standard, indicated in the size table. DSP boards, panels and sheets can be used in construction:
- In the construction of prefabricated housing;
- For the arrangement of fixed formwork;
- When finishing facades, including ventilated ones;
- In interior decoration, including for arranging partitions, floors and ceilings;
- In the construction of fences.
Board certification and composition components
The smallest plate size in thickness is 4 mm, respectively, the weight of such products allows them to be used in high-rise buildings. The production of ultra-thin CBPB has been mastered in order to reduce the cost of the product, since thin sheets made using modern technologies do not need to be brought to the required quality on grinding equipment.
There are also embossed plates with a smooth surface - they include finely dispersed substances. Facades are trimmed with such plates “under the facing brick” or “under the natural stone”. Embossed sheets do not need to be further treated with special substances or primers, painted or sanded - they are ready for installation immediately after purchase.
| Parameter | Numeric value |
| Specific gravity | 1250-1400 kg/m3 |
| Moisture composition | 9+/-3% |
| Swelling per day, ≤ | 2% |
| Water absorption per day, ≤ | 16% |
| Bending strength: Product thickness 10,12, 16mm ≥ | 12 MPa |
| Product thickness ≥ 24mm ≥ | 10 MPa |
| Product thickness ≥ 36mm ≥ | 9 MPa |
| Tensile strength in perpendicular direction ≥ | 0.4 MPa |
| Flexural elasticity ≥ | 3500 MPa |
| Viscosity | 9 J / m 2 |
| combustibility | G1 |
| Frost resistance after 50 freeze/thaw cycles ≤ | 10 % |
| Roughness Rz according to GOST 7016-82 ≤ For non-sanded surfaces | 320 mm |
| For sanded surfaces | 0 mm |
| Maximum and minimum thickness deviations ≤ For sanded surfaces | ±0.3 mm |
| for unpolished products with thickness: | ±0.6 mm |
| 12-16 mm | ±0.8 mm |
| 24 mm | ±1.0 mm |
| 36 mm | ±1.4 mm |
| Maximum and minimum deviations in length and width | ±3 mm |
| Thermal conductivity | 0.26 W/(m K) |
| Linear expansion | 0.0235 or 23.5 mm / (linear meter C) |
| Vapor permeability | 0.03 mg/(m h Pa) |
When laying DSP sheets on the floor, it is not necessary to finish the resulting surface - it will be smooth enough to lay linoleum on it or paint it. Before painting, it is recommended (but not necessary) to prime the cement-bonded particle board or open it with a special water-repellent composition. The appearance of such plates will meet any design requirements.
It is important to carry out high-quality and correct installation of sheets so that during operation they do not loosen, warp and begin to peel off, which will reduce their service life. In particular, this applies to the external conditions for the use of DSP boards.
The wide scope of DSP is due to the competitive cost of this building material. Despite the low price, the quality of the products does not suffer, allowing DSP to be used in any conditions to solve a wide range of problems. So, when laying DSP boards as a subfloor, they will also serve as an additional layer of thermal insulation, in addition to a strong and durable basis for decorative flooring.
Installation and finishing works of DSP
Prior to the use of csp boards in construction, they must be delivered to the construction site, and this is done only on the edge. The sheets are stored horizontally, they are attached to the installation site in at least 3 places with press washers, under which holes must first be drilled. One of the disadvantages of cement-bonded sheets is brittleness, so they should be handled with care.
The easiest way to finish the plates is by painting with silicone, acrylic paints, or water-based paints. When installing between adjacent plates, an air gap of 2-3 mm must be left to compensate for the expansion of products with changes in temperature and air humidity. The airtight and smooth surface of the boards makes it possible to apply a protective paint without preliminary priming of the plane, on the side of the board with which the cement layer is located. 
Joints and gaps between the plates cannot be puttied - it is allowed to use sealant to mask the seams, since it does not crack from exposure to precipitation and temperature. Also, seams and joints are recommended to be sealed with wooden slats or metal slats.
Finishing of DSP walls is facilitated by their absolutely smooth bottom surface. Panels mounted outside or inside the house can be finished with plastering, painting, laying porcelain or tile tiles, wallpapering, laying linoleum, laminate, carpeting, etc.
In the building materials market, cement particle board, the technical characteristics of which compete with traditional materials, costs almost the same as other board products, depending on the dimensions, weight of the product and order volume. 
To decorate the walls of a house, they often use the technique of decorating under red or finishing bricks. Such an exterior of a private house will give housing respectability with minimal financial and labor investments.
