| 摘要 |
FIELD: filling cavities in concrete articles. ^ SUBSTANCE: putty comprises, in mass %, 42-48 of lime paste, 18-20 perlitic sand, 14-16 of chalk, 1.8-3.8 of gypsum, 16-18 of Portland cement, and 0.1-0.2 of alum. ^ EFFECT: enhanced adhesion. ^ 1 tbl |
