CEMENT ADMIXTURE, CEMENT COMPOSITION USING SAME, AND PROCESSING METHOD FOR PREVENTING SALT DAMAGE IN CONCRETE STRUCTURE

摘要

A cement admixture containing a calcium aluminate having a chemical composition containing from 21 to 27 parts by mass of CaO, from 65 to 73 parts by mass of Al₂O₃, from 1 to 5 parts by mass of SiO₂, from 1 to 6 parts by mass of Fe₂O₃, and from 1 to 5 parts by mass of TiO₂, based on the total amount of CaO, Al₂O₃, SiO₂, Fe₂O₃, and TiO₂, and having a Blaine specific surface area of 2,000 to 6,000 cm²/g.