| abstract |
(57) Abstract: [PROBLEMS] To provide a fluid backfill material having desired fluidity and strength characteristics and capable of being supplied in a large amount, and a backfill method for buried articles using the same. SOLUTION: A buried material backfilling material, etc., characterized by comprising cement, water, a particle size adjusting material, a quick-setting agent and sand, and satisfying the following conditions. During buried object backfill material 1 m 3, ( A) 20 to 100 kg of cement, (b) 350 to 500 kg of water, and (c) 1 to 70 parts by weight of the particle size adjusting agent, and (d) 0.05 to 0.3 of the quick-setting admixture with respect to the cement 1. (V) Sand is contained in an amount of 7 parts by weight or less (including 0) with respect to 1 part of (the cement + the particle size adjusting material). |