| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a buried material backfilling material having fixed fluidity and mechanical strength characteristics, capable of being supplied in a large amount and provide a buried material backfilling engineering method. SOLUTION: This buried material backfilling material comprises cement, water, a particle size adjustor, an accelerator and sand and satisfies the following condition. The buried material backfilling material comprises 20-100kg of cement in 350-500kg of water in 1m<3> of the buried material backfilling material. The particle size adjustor in an amount of 1-70 pts.wt. and the accelerator in an amount of 0.05-0.3 pt.wt. are contained in 1 of the cement. The sand in an amount of <=7 pts.wt. (including 0 pt.wt) is contained in 1 of (the cement and the particle size adjustor).</p> |
