Patent ID: 8029619
Filing Date: 2011-10-04
Classification: C04B,Y02W

Abstract:
1. A grouting material which comprises a fine particle material having a Blaine specific surface area of 5000 cm greater than 40% by mass and 60% by mass or less of cement clinker, 40% by mass or more and less than 60% by mass of blast-furnace slag and 0.5 to 3 parts by mass of gypsum in terms of SO and further comprises (i) 4 to 8 parts by mass of calcium-aluminate-containing rapid-hardening admixture, (ii) 0.05 to 0.2 parts by mass of setting retarder and (iii) 0.5 to 1.7 parts by mass of high-performance water-reducing agent, based on 100 parts by mass of the fine particle material.