Sand

Sand - a sedimentary rock and artificial material, which consists of particles of rock. Most often, the sand consists of nearly pure silica - the second name - silicon dioxide. Natural Sand Natural Sand - a loose mixture consisting of particles the size of 0,14-5 mm, and which resulted from the destruction of solid rock. Depending on the factor abundance of sand they are divided into: - river - sea - mountain - career. Sand extracted from the river quarry used kachestvezapolnitelya heavy, light, fine-grained, cellular and silicate concrete, mortar, dry mixes, for the device base and coating roads and airfields. River sand is usually more expensive than a career as river sand, often imported, and even a pesokprohodit process of separating from the rubble of gravel (pebbles) in the quarries. Well posostavu peskarechnoy sand is clean, does not contain impurities of clay and a career may contain impurities of clay (and in some cases it's good, because the sand is not so quickly settles in solution). In career sand may be stones and clay. Often, to improve the quality of products used prirodnuyupeschano-graviynuyusmes. With a particle size of 0-20 mm. This blend is widely used for concrete production, housing, in road and railway construction, is well suited for production of quality concrete products. Heavy Heavy artificial artificial sand sand - a loose mixture of particles which are obtained by crushing of hard and solid rock. Most often, such sands are acute-angled shape with a rough surface. Artificial sand used in decorative solutions for the texture layer exterior panels. Depending on the size of sand particles, distinguish these types of sand: small (less than 0.5 mmsrednie (from 0,5 to 2 mm) and coarse (particle size from 2 to 5 mm). This is necessary in order to know the to which the sand is suitable. So, for brick and block masonry - good sand with no larger than 2.5 mm, and for rubble and jointing precast structures - not more than 5 mm sand Benefits - Completely safe material, as sand is environmentally friendly, does not cause allergic reactions and skin irritation, does not harm the climate of the room - Turnover - This property allows you to easily sand fills all the voids and the cavity wall of masonry, that is obrazovyvaetsyapolnoy insulation. - Sand - non-combustible material with a melting point of 1100 - 12000S. - Sand heating vydelyaetvrednyh not matter. - Sand in the designs are very durable, with time does not change its properties. - Sand has neorganichny character, that is not able to decompose, it does not live insects and rodents. - Sand fairly economical material. The use of sand Sand is an excellent building material and is used for plastering and, backfill. For example. m pit sand used for masonry and foundation works, concrete and concrete products. Widespread sand got in the building materials - clay, for example, is it the sand is not as fast accumulates in solution. Fine sand is used for the preparation of solutions, which allow for grout to get a fine texture that does not require puttying. pesokne Because it reacts with either binder or water, reduces the shrinkage of mortars and concrete in their cure. If you add sand in the cement screed - it will warm the floor, because sand has прекраснымитеплоизолирующими and sound deadening properties.