| 摘要 |
PROBLEM TO BE SOLVED: To provide a cement-based grouting material that is a fine grain cement-based one, can be grouted easily even into the ground or the like having low permeability, and can also sufficiently control the elution of hexavalent chromium (Cr) without causing any obstacle for groutability and curability after grouting.SOLUTION: The cement-based grouting material includes 100 pts.mass cement fine powder, 0-<100 pts.mass slag fine powder, 10-300 pts.mass calcium aluminate, and 10-300 pts.mass gypsum, and further includes an alkali metal sulfate. |
