| 摘要 |
PROBLEM TO BE SOLVED: To obtain a hardening material that imparts strength to soft soil and sludge and promotes slaking ability, cleaning ability, ventilation ability and reduction ability being proper power of soil. SOLUTION: The hardening material comprises 100 parts wt. of a composition composed of light burned magnesia, another fertilizer except light burned magnesia and an alkali neutralizer and 0.5-10 parts wt. of charcoal. The hardening material provides soft soil and sludge with strength and soil with energy and cleans the environment. Soil is hardened with the hardening material to give hardened soil, which is reused as a soil material for a sport ground. COPYRIGHT: (C)2007,JPO&INPIT |
