| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to industry of building materials, in particular, to manufacturing concrete wall blocks. Concrete mixture contains, wt %: Portland cement 25.0-27.0; ash-and-slag filler 52.06-55.66; sifted through sieve No 10 crumb of foamed polyethylene 0.06-0.08; cut into 5-15 mm segments glass fibre 0.8-1.2; polymer of ethylhydrosiloxane 136-41 0.06-0.08; water 18.0-20.0.EFFECT: increased frost resistance of concrete.1 tbl |
