EXTRA-QUICK HARDENING CEMENT COMPOSITION, EXTRA-QUICK HARDENING CEMENT CONCRETE COMPOSITION, AND EXTRA-QUICK HARDENING CEMENT CONCRETE

摘要

PPROBLEM TO BE SOLVED: To provide an extra-quick hardening cement composition which not only develops a high bending strength, especially a bending strength of 20 N/mmSP2/SPor higher, at its initial stage but also have an enhanced compression strength; an extra-quick hardening cement concrete composition; and an extra-quick hardening cement concrete. PSOLUTION: The extra-quick hardening cement composition contains a clinker containing a 3CaO-SiOSB2/SBsolid solution and 11CaO-7AlSB2/SBOSB3/SB-CaFSB2/SB, anhydrous gypsum, an alumino-calcium silicate glass, a granulated blast furnace slag micropowder, a high-performance water reducer, a setting modifier, and a steel fiber with a tensile strength of 1,000 N/mmSP2/SPor higher. The steel fiber in the extra-quick hardening cement composition has an average diameter of 0.1-1.5 mm and a fiber length of 3-40 mm. The extra-quick hardening cement concrete composition contains the extra-quick hardening cement composition and an aggregate. The extra-quick hardening cement concrete contains the extra-quick hardening cement concrete composition and water. PCOPYRIGHT: (C)2008,JPO&INPIT