| abstract |
PROBLEM TO BE SOLVED: To provide a cement composition capable of effectively utilizing shirasu and fly ash and having excellent strength development, particularly a cement composition used as various injection materials and a method for using the same. A cement composition comprising cement, shirasu or it and fly ash, an alkali thickening polymer emulsion, and a curing accelerator, and the sum of shirasu and fly ash is 30 parts or more per 100 parts of cement. The cement composition, the cement composition in which the hardening accelerator contains aluminate and sulfate, an injection material using the cement composition, and cement, shirasu, fly ash, and water Are mixed in advance to give A solution, a mixture containing a curing accelerator and water is used as B solution, and a mixture containing an alkali thickening polymer emulsion and water is used as C solution, immediately before use. A method of using the cement composition in which the liquid A, the liquid mixture of the liquid B and the liquid C, and the liquid A, the liquid B, and the liquid C are mixed is configured. [Selection figure] None |