SLUMP-REDUCING, SPRAYING ADMIXTURE, SPRAYING CEMENT CONCRETE AND SPRAYING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a slump-reducing, spraying admixture which is capable of drastically reducing the slump value of cement concrete when spraying work with the cement concrete is executed, preventing concrete drooling from being caused and adjusting concrete hardness to a value appropriate to perform trowelling of the concrete after spraying. SOLUTION: This admixture comprises a clay mineral and a water-absorbing high polymer compound and optionally, further additionally contains an aluminum-containing material, an alkali metal carbonate and/or a calcareous material(s).