| 摘要 |
PROBLEM TO BE SOLVED: To provide a mortar or concrete-based spray material having excellent adhesive property to natural ground, drilling surface, slope face or the like, capable of being constructed such as finishing adjustment after spray and forming a hardened cured body quickly after such construction.SOLUTION: There is provided an accelerator for spray material containing: 100 pts.mass of (A) powder of clinker containing calcium aluminate having contained molar ratio of CaO and AlO(CaO/AlO) of 2 to 2.4 and vitrification percentage of 90% or more as essential components, containing FeOas a chemical component of 1 to 2.5 mass% and having total contained amount of CaO, AlOand FeOas chemical components of 95 mass% or more; 11 to 16 pts.mass of (B) alkali metal aluminate; 9 to 18 pts.mass of (C) alkali metal carbonate; and 45 to 80 pts.mass of (D) gypsum.SELECTED DRAWING: None |
