MATERIAL FOR FILLING CAVITY

摘要

PROBLEM TO BE SOLVED: To provide a cavity-filling material which enables effective utilization of industrial waste such as coal ash and in which lesser bleeding is caused and which is excellent in flowability and strength. SOLUTION: This cavity-filling material contains 100 pts.wt. of coal ash and 1-10 pts.wt. gypsum (expressed in terms of anhydrous gypsum), wherein another cavity-filling material containing 100 pts.wt. of coal ash, 1-10 pts.wt. of gypsum and further, 1-10 pts.wt. of at least one component selected from calcium oxide, calcium hydroxide, sodium hydroxide and cement, is also provided.