Plastering

Decorative plaster consists of three layers: the ground, preparatory layer and decorative layer nakryvochnogo (nakryvki). For the soil and apply the usual preparatory layer plasters with the expectation that strength of the preparatory layer was higher nakryvochnogo. This is especially important during the subsequent machining of hardened plaster to give it a different texture. For nakryvki use dry mix that before the application shuts water to desired consistency. Lime-sand mixture.

They consist mainly of lime putty, portland cement, sand, pigment, sometimes a stone of flour or powder, filler is natural quartz or marble sand. Lime-cement mixtures are composed of hydrated lime (65-70%), cement (19-30%), filler and pigment (2-16%). They are fine-and medium. Designed for plastering the facade with brick walls, made of porous stone piece – cinder block, ceramic shell. To plastering plinths, columns, pilasters, walls and other parts of the building exposed to the strong hydration, they are not used. Cement-lime mixtures are composed of hydrated lime (20%), cement (64-80%), pigments (2-16%). They come in small, medium, and coarse-grained and intended for plastering the surfaces of dense concrete and brick, with protruding parts – pilasters, belts, rusty, ie surfaces that are in unfavorable operating conditions.

For plastering of walls and plinths of buildings of cinder mixture mark below 50 do not apply. Terrazitovye mixture consist of one or two binders (one need hydrated lime), aggregates of varying size (chips, glass, mica) and pigments. According to the type of binders are divided into a mixture of lime, lime-cement (with a predominance of concrete and cement. Cement used white. terrazitovyh in mixtures using aggregates: fine-grained (M) – 0,15-2 mm grain size with a predominance of grain fractions of 0.3-0.6 MM4 medium-(C) – Grain 2-4 mm fractions with a predominance of grains 0.6-1.2 m; coarse-grained (R) – the seeds of 4-6 mm with a predominance of grain fractions of 1.2-2 mm. Mixture with fine-grained filler is used to pull the curtain and rods, with a medium-grained – for plastering caps or lower floors of the facades. The proportions of solutions for ordinary plasters: Window and door sills and soffits, as well as the side surfaces projecting from the plane of the wall and recessed into the thickness of their architectural and design parts in plaster facades shall be calculated separately from the division into two groups: the width to 200 and 200 mm. With an improved stucco facade slopes and low tides are counted separately. The scope of work for plastering and window door slopes inside the buildings is calculated on an eXtra their area in m3. Amount of work to determine the thrust of internal casings on the area occupied by them on the surface of the walls (the projection on the wall). The scope of work on stretching cornices, rods, belts, trims and other drawn parts for high-quality plaster facades calculate the area occupied by them on the surface of the facade (the projection on the wall). When the device eaves with a relative, preyshayuschim their height, calculate the amount of work in the area of horizontal projection of the eaves. The scope of work for plastering the curtain rod and are counted separately by the sum of the relative height and multiplied by the length of the rod.