| you are: Kinds and application of natural stone materials
The Stone blocks for moshchenija roads has the form bruska, slightly narrowed from top to bottom. A stone blocks produce in the mechanised way from homogeneous small - and medium-grained breeds homogeneous small - (diabase, etc.). From the same breeds produce a draught for mozaikovoj a roadway (coming nearer under the form to a cube) and a draught for moshchenija (in the form of the truncated pyramid). готель одеса
Trotuarnye of a plate produce from gneisses and layered rocks similar to it. They have the form of a rectangular or square plate with the party of 20-80 sm with an equal surface of the person and bed in the thickness not less than 4 sm and no more than 15 see
Magmatic and metamorficheskie (quartzites) rocks use Some for futerovki various installations and the devices treated to action of acids, alkalis, salts and aggressive gases, and also coming under influence high and sharply varying temperatures and pressure. Kislotoupornye breeds go on manufacturing tesanyh plates, bricks, bruskov and shaped products, and in droblennom and the ground kind serve as fillers and napolnitelej in kislotoupornom concrete, are components kislotoupornyh cements.
gvetstvii with appointment applied rocks should meet certain requirements, namely:
1) to be kislotoupornymi, i.e. It is good to resist to influence of various acids and other reagents; this property is estimated on solubility of a powder of breed in the concentrated acids (hydrochloric, sulfuric) at heating;
2) to have high fire resistance;
3) to possess sufficient resistance to compression and a bend, and also viscosity;
4) to maintain sharp fluctuations of temperatures.
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