MIXING WATER FOR CEMENT-BASED HARDENING MATERIAL INCREASING STRENGTH

摘要

PROBLEM TO BE SOLVED: To simply produce a cement-based hardening material equivalent to a cement-based hardening material using seawater and sea sand even in a place difficult to obtain seawater and sea sand.SOLUTION: Mixing water for a cement-based hardening material is used for kneading and mixing constituent materials including cement and an aggregate when producing the cement-based hardening material such as mortar and concrete. Chloride ion concentration and sulfate ion concentration are increased to a concentration equivalent to seawater. Sodium chloride and sodium sulfate are preferable as the supply sources of a chloride ion and a sulfuric acid ion. Blast furnace cement is preferable as the cement.