| 摘要 |
FIELD: chemistry.SUBSTANCE: crude mixture for making wall blocks contains the following, wt %: portland cement 26.0-30.0; quartz sand 66.8-70.9; spent car tyres crushed and sieved through sieve N2.5 1.0-1.5; asbestos 1.0-1.5; gypsum binder 0.4-0.6; dibutyl phthalate-plasticised polyvinyl acetate dispersion 0.1-0.2, with water to cement ratio of 0.5-0.55.EFFECT: obtaining high-strength wall blocks.1 tbl |
