摘要 |
PROBLEM TO BE SOLVED: To provide a method of installation by spraying or spraying material, having a large initial curing property and excellent in rapid curing property. SOLUTION: This spraying material or method of installing by spraying by using a rapidly curing agent in a cement-based material, is provided by using a water-curable composition obtained by adding a calcined material by using coal ash with gypsum as a cement-based material, and the calcined material contains 10-40 wt.% C3A amount and at least one of C3S and C2S. |