| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to industry of building materials, in particular, to production of concrete wall blocks. Concrete mixture contains, wt %: Portland cement 25.0-27.0; ash-slag filling agent 52.22-56.36; foam-polyethylene crumb sieved through No 10 sieve 0.06-0.08; asbestos fibre cut into 5-15 mm long segments 0.4-0.6; saponified wood resin 0.12-0.16; water 18.0-20.0.EFFECT: increased frost resistance.1 tbl |
