High strength cement mortar composition and method of producing hardened high strength cement mortar

摘要

PROBLEM TO BE SOLVED: To provide a high-strength cement mortar composition having high compressive strength without requiring a large-scale and special manufacturing facility.SOLUTION: A high-strength cement mortar composition comprises cement, silica fume, water, a fine aggregate, a water reducing agent, an antifoaming agent, and a metal fine powder. The cement contains 10.0-40.0 mass% of CS and 40.0-70.0 mass% of CS, and the fine aggregate comprises ferronickel slag. A method for producing hardened high-strength cement mortar includes: a pre-curing step of curing the high-strength cement mortar composition in air at 15-25°C for 1-5 days; a first curing step of curing the high-strength cement mortar composition in water at 20-60°C for 1-7 days; a second curing step of curing the high-strength cement mortar composition in water at 80-100°C for 5-21 days; and a third curing step of curing the high-strength cement mortar composition in air at 80-200°C for 5-21 days.