| 摘要 |
PROBLEM TO BE SOLVED: To control the density of a hardened body and to enlarge applicability by formulating a hydraulic material containing cement, burned ash, a hardening accelerator and an aggregate with seawater and/or water in the range of an optimum water ratio + a specific %, placing the mixture in a frame mold to give a hydraulic material and compacting the hydraulic material by vibration. SOLUTION: A hydraulic material 3 containing cement, burned ash, a hardening accelerator and an aggregate is kneaded with seawater and/or water in the range of an optimum water ratio + (0-5)% to give a hydraulic material 3. The amount of the cement is 10-50 pts.wt. based on 100 pts.wt. of the burned ash such as coal ash. An inorganic salt such as sodium chloride is used as the hardening accelerator and its amount added is 1 to 2.5 pts.wt. based on 100 pts.wt. of the mixture of coal ash and cement. The amount of the aggregate such as metal slag is preferably 50-100 wt.%. The hydraulic material 3 is placed in a frame mold 1, vibrated by a vibrator 2 and compacted to give a hardened body. The density of the hardened body is controlled by the addition of the aggregate to give a high-density hardened body. |
