FIELD: chemistry.
SUBSTANCE: invention relates to making aggregates for concrete. The mixture for making porous aggregate contains the following, wt %: montmorillonite clay - 79.0-80.0; coal - 2.0-3.0; dolomite - 5.0-90; phosphorus slag - 9.0-13.0.
EFFECT: higher strength of porous aggregate.
1 tbl
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