| 摘要 |
PROBLEM TO BE SOLVED: To provide a curing accelerating agent and a spray material for spraying to the ceiling part or the wall part of a tunnel or the like, free from adverse effect on working environment or ambient environment and having excellent accelerating property. SOLUTION: The accelerating agent contains a CaO-Al2 O3 -LiO2 based material 1-15wt.% in LiO2 content and aluminum sulfate as effective components. And the curing accelerating agent contains the CaO-Al2 O3 -Li2 O based material 1-15wt.% in LiO2 content, aluminum sulfate and a pozzolane material as effective components. The pozzolane material is one or more kinds selected from a group composed of a silica fume, a meta kaoline, a blast furnace slag and a fly ash. The spray material contains cement and the accelerating agent as effective components. A spray concrete contains the spray material as an effective components. The spray process is by spraying the spray concrete. |
