FIELD: chemistry.
SUBSTANCE: invention relates to making porous aggregate for concrete. The mixture for making porous aggregate contains the following, wt %: montmorillonite clay 76.0-81.0, coal 5.0-6.0, dolomite 7.0-9.0, talc 7.0-9.0.
EFFECT: high water resistance of porous aggregate.
1 tbl
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