| you are: Kinds and application of natural stone materials
Butovyj a stone (but) - pieces of a stone of the wrong form, the size no more than 50 sm on the greatest measurement. The butovyj stone can be fragmentary (the wrong form) and postelistyj. For reception fragmentary buta and rubble working out of breeds carry out in mainly explosive way. Plitnjakovyj but receive from breeds plastovogo zaleganija. The large separateness of such breed limited to cracks, separate a dredge with the subsequent razvalkoj pieces till the demanded sizes kamnekolnym the tool. постельное белье на резинке
Butovyj receive a stone working out local sedimentary and izverzhennyh the breeds meeting design requirements concerning durability, frost resistance and water resistance. But from sedimentary breeds (limestones, dolomite, sandstones) should not contain impurity of clay, friable layers and inclusions pirita.
From buta erect dams and other hydraulic engineering constructions, it is applied to retaining walls, by layings of the bases and walls of not heated buildings. The considerable quantity butovogo a stone is processed in rubble.
Rubble - pieces of a stone in the size of 5-70 mm (for hydraulic engineering building to 150 mm). Receive its crushing butovogo a stone. For maintenance of the necessary grain structure of rubble crushing process carry out in some stages. There is also the natural rubble named dresvoj.
Gravel consists from okatannyh grains of the same sizes, as at rubble. It receive sifting of friable sedimentary breeds, in necessary cases apply washing to removal of harmful impurity (clay, a dust).
Sand consists of grains of various minerals (quartz, feldspar, mica, etc.) with the sizes 0,14-5 mm. Apply natural and artificial (droblenye) sand.
Rubble, gravel and sand use as fillers for concrete.
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