| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement-based spraying material which has excellent acid resistance and is suitable for performing spraying work for forming a thick sprayed material and enables prevention of any cracking or peeling in the sprayed material from being caused. SOLUTION: This spraying material contains aggregate and alumina cement which has a <=25 wt.% fraction of particles having <=5μm particle size, in a weight ratio of (alumina cement)/aggregate of 20/80 to 40/60, and also, a lithium salt which is dissolved in water of a pH of >=6 to release Li<+> ion, wherein the ratio of the content of an inorganic particle fraction having >5μm particle size to the total content of all the inorganic particles in the spraying material is >=75 wt.%.
|
