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The Modular brick has the sizes 250X120X88 mm and is issued with round or slot-hole emptiness that the weight of one brick was no more than 4 kg. Deviations from the sizes should not exceed the established sizes. 123456
The Brick should not have mechanical damages and through cracks. On separate bricks than 15 mm in quantity not above two on one brick are supposed otbitosti edges and corners in the size on length of an edge no more. On separate bricks one through crack no more than 30 mm on width of a brick can be admitted in the extent. The brick should be normally burnt. The brick ' nedozhog ' and ' perezhog ' is marriage. 123456 after roasting the brick should correspond to colour of the standard of normally burnt brick. Limy inclusions (dutiki), causing brick destruction are not supposed.
Depending on strength on compression a brick divide into marks 75, 100, 125, 150, 200, 250, 300. Volume weight of an ordinary clay brick-1600-1900 кгм3, its heat conductivity - of 0,7-0,82 Vt (m - °. 123456 Water absorption of a brick above М150 should be not less than 6%, a brick of other marks not less than 8%. This requirement provides certain porosity of a brick, differently it becomes too teploprovoden and it will be bad to be linked to a building solution. Frost resistance of a brick - not less than 15 cycles of alternate freezing and thawing; higher marks on frost resistance are provided also. 123456
The Brick is applied mainly to a laying of walls of buildings, manufacturing stenovyh panels, by layings of furnaces and chimneys.
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