| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a burying material which has high water content and such a flowability that it can be easily and uniformly filled even into details of a burying part in a short period of time and, which hardens in a short period of time when buried or backfilled and which has strength development suitable for re-excavation after backfilled.SOLUTION: There is provided the quick hardening burying material which contains: 100 pts.mass of cement; 15 to 75 pts.mass of calcium aluminum having a molar ratio of CaO and AlO, CaO/AlO=1.2 to 1.6; 750 to 1500 pts.mass (in terms of solid component) of 1 or more kind selected from a group of sand, aggregate and construction sludge; 15 to 75 pts.mass of gypsums; and 2 to 7.5 pts.mass of a setting modifier and which has a water content of 600 to 1200 pts.mass.</p> |
