| 摘要 |
FIELD: production of mixtures for manufacture of stone substituting inserts in jewelry such as brooches, necklaces etc. ^ SUBSTANCE: artificial rock contains cement, calcium white sand, water, and additionally contains ground elephant ivory and/or walrus bone processing wastes treated with chloride lime. Components are used in the following ratio, wt: cement 25-35; calcium white sand 10-20; indicated wastes 30-55; water 10-15. ^ EFFECT: increased hardness and ecological safety of artificial rock. ^ 1 tbl, 2 ex |
