Liquid quick-setting admixture, shotcreting material and method for shotcreting using them

摘要

To provide a liquid quick-setting admixture and a spraying material and a spraying method using it, which make spraying excellent in quick-setting property possible and which may improve the storage stability of the liquid quick-setting admixture. ;A liquid quick-setting admixture characterized by comprising sulfur, aluminum and alkali metal element components, and a complexing agent. Said liquid quick-setting admixture preferably contains per 100 parts of the sulfur element component as SO₃, from 25 to 110 parts of the aluminum element component as Al₂O₃, from 2.5 to 50 parts of the alkali metal element component as R₂O (in which R is an alkali metal atom) and from 2.5 to 75 parts of the complexing agent.