Mortar or concrete composition with improved frost resistance using blast furnace slag fine aggregate, molded product formed by molding the same, and method for producing molded product

摘要

PROBLEM TO BE SOLVED: To provide a mortar or concrete composition using blast furnace slag fine aggregate, having improved resistance to frost damage; and a product molded therefrom.SOLUTION: The mortar or concrete composition contains fine aggregate including blast furnace slag fine aggregate, a cement-containing binder, and water. A mortar or concrete test piece made from the mortar or concrete composition has a relative dynamic modulus of elasticity or a durability index in predetermined freezing/thawing cycles in a freezing/thawing test based on the freezing/thawing test method described in JIS A 1148 is larger than a relative dynamic modulus of elasticity or a durability index in the predetermined freezing/thawing cycles in the freezing/thawing test of a mortar or concrete test piece made from fine aggregate including no blast furnace slag fine aggregate, a cement-containing binder, and water, being excellent in resistance to frost damage.