Cement particle board - description of the participants' experience of the portal

The first venture for the production of cement chipboard (DSP) have been opened in the USSR in the late eighties of the last century, and many of them operate today. Plates of cement and chips are not as popular as plywood, gypsum board or OSB, but this versatile material with a wide field of application and the high technical and operational characteristics. Participants portal FORUMHOUSE aware of all the advantages of a DSP and actively use them, in particular, and on the facades of their houses.

Cement particle board - raw materials, manufacturing method specifications

One of the main advantages of these plates is a natural part - there is no formaldehyde and other aggressive chemicals released into the environment during operation. Products of different manufactures may be different composition of mineral supplements, but the quantitative proportion of each group of substances used unchangeable:

• The binder (Portland cement M500, GOST 10178-85) - 65%;
• Wood chips - 24%;
• Water - 8.5%;
• Hydration (mineralizing) Additives - 2.5%.

DSP - is a composite material made of a mixture of cement and smooth, thin shavings softwood. Since sugar contained in the wood and other substances, negatively influencing the cement and hamper formation of the monolithic structure, are used for neutralizing mineralizing agents. This may be calcium chloride, aluminum sulphate, aluminum sulphate, aluminum chloride, sodium silicate and others. The chips treated with a reagent mixed with cement to form a homogeneous mass, and then sent to the molding. To increase the strength and obtain a smooth and uniform surface, the plates are formed from several layers, which differ in size and chip, and its location. The most common three layers - an average of more rough and coarse chips, outdoor - of the more shallow. Some production of cement-bonded particleboard form a carpet of four layers, but the principle is the same - large fraction inside. The formed plates are compressed under a pressure of 1.8-2.0 MPa, and then subjected to heat treatment in a hardening chamber (8 hours at 50-80⁰S, humidity 50-60%). finished boards must conform to GOST 26816-86, there are European standards - EN 634-2.

At the plate - plenty of physical and technical characteristics, that little say ordinary consumers who are interested for the most part,
Whether DSP burning stove, so we consider the main ones:

• Thickness - 8-40 mm;
• Density - 1100-1400 kg / mᶟ;
• Flexural strength - 45-65 MPa;
• Frost resistance - 50 cycles;
• Thermal conductivity - 0.26 W / (m * C);
• Biostability - possible damage microorganisms have been formed during the manufacture alkaline medium, for destroying mold, fungi and parasites. But mice and insects gnaw cement, even with the inclusion of chips, too dubious pleasure;
• Flammability group - G-1 (nonflammable, does not release during the combustion of toxins, not flame spreading material);
• Warranty period in building constructions - 50 years.

According to specifications, the plate width can be either 1250 mm or 1200 mm. The first option is obsolete, although many businesses, especially the "mastodons" industry still produce a plate width. Length: two basic sizes are common - either 2700mm or 3200, but there are options and 3,000 mm, and the desired settings can make to order. When the mass of merit, the stove has a significant drawback - because of the raw material base, they obtained quite heavy. Thinnest plate, 8x1250x3200 mm, will weigh about 36 kg and 40 mm thick plate with the same dimensions - is 185 kg. Therefore, when working with plates usually requires an assistant, for unloading large amounts - machinery and restrictions on the use of the facade - the height of more than three floors. But this material is used in virtually all areas of the building, depending on the thickness:

• Inner paneling - 8-12 mm;
• Partition walls - 8-20 mm;
• Roofing systems, exterior cladding - 10-16 mm;
• Subfloor (overlapping floating screed) - 16-26 mm;
• Formwork - 14-26 mm;
• Walling in the construction of frame houses - 10-40 mm.

DSP plate: application for exterior use

One possible use of the DSP - facing the screen in ventilated facade systems. It turns out a flat, stable surface to external influences, is completely ready for finishing. Since the installation of plates required expansion joint (6-8 mm, at least 4 mm), often combined with a trim finish under timbered. Possible and painting canvases façade paint, like one of our wearer.

glebomater (Participant FORUMHOUSE):

I foam house DSP inside and out. Outside painted facade vodoemulsionkoy of sheets rests perfectly inside the wallpaper of DSPs - all wonderful. Actually hang together, sawed plate grinder, a stone disc.

DSP technology for mounting the facade - standard: lathing of timber or metal rails, with a step between the racks 600-625 mm (the binding to the board width). Between the insulation and the DSP must be a ventilation gap of at least 40 mm. Plates are attached to the crate on the screws, it is recommended to use zinc-plated or anodized, so as black, even if the cap zashpatlevat, may eventually give rusty spots and a few layers paints. Under the screws in the plates pre-drilled holes, if conventional self-tapping, countersinking is executed - is selected chamfer at the top of the hole to screw has been recessed in the plate. When using screws samozenkuyuschihsya mounting process is simplified.

Since the DSP is quite heavy and somewhat brittle material, it is necessary to observe certain rules of standard fasteners, cited a member of our portal.

AleksandrTVVAUL (User FORUMHOUSE):

For a DSP as a cladding material should be remembered on linear changes in the geometry of changing humidity and temperature. They are, like any board materials. To solve the issue with the careful application and the absence of further negative consequences, it is necessary to comply with mounting technology.

So:

• Step fasteners on the edges of the plate - 300 mm;
• The indentation of the edge - 16 mm;
• Step fixture in the middle of the plate - 400 mm;
• Mounting angles (against chipping) - at a distance of 40 mm on the long and short side.

Expansion joints can remain open, or closed nashchelnikami decorative overlays (falshfahverk) or sealed special structures (for finishing plasters). If jointing is not planned, and facing a cake does not include a heater, prior to mounting plates racks protect against moisture (special impregnation or insulating tape).

Member portal Andrew Pavlovets DSP used with simulation fachwerk for cladding buildings holiday home and bath and fully satisfied with his choice.

Andrew Pavlovets (User FORUMHOUSE):

12 years have a house and a bathhouse - all sheathed DSP, with one house had to sheathe for lack of helpers. To make it easier to work, sawed slab into squares 1200x1200 mm, folded sheets stacked, then zasverlival and insert fasteners. Sheathe the old linings, however small cracks were left for airing. A pie following: Outer layer - DSP - 10 mm, wall paneling - 20 mm, glassine, lathing - 25 mm, mineral wool - 100 mm, the film (steam), air - 50 mm, lathing - 25mm, plasterboard, finish (wallpaper).

After installation, the walls were painted with two coats of water-based exterior paint, roller, seams closed plates of planed edging board, painted in dark light. pad layout is selected in accordance with the lining of joints. Although not use a primer, for all the years of paint is not peeled off, and the house has not lost the original appearance. However, if you follow the technology, preparation (priming) is an obligatory stage of the work, and neglect its implementation is not necessary.

Used cement - chipboard and trim karkasnikov as walling.

Bolshakov (User FORUMHOUSE):

Performed trim frame DSP 10 mm, for a year took it the width of the gap between the sheets at the control points. The gap has not changed any of a millimeter.

In the future, the walls have been primed, painted white as a substrate and structural tinted back in two layers. Seams are closed decorative overlays.

Whether to apply on the facade of the DSP, or other materials to do, everyone chooses, but that it real, no matter how opponents proved otherwise dry methods, the participants were convinced of our portal personally.

On application as exterior cladding of a DSP and other materials of interest can be found in section offline. What still facing demand is described in the article the effective facade. DSP close in composition, but different production cycles and properties fiber cement siding It will also protect and transform the house. A video presented house on a slope with a half-timbered facade from the DSP.

Discuss the article and read other materials devoted to country life you can on the websiteFORUMHOUSE.

Subscribe to the channel and put the "Like" so as not to miss the next release!