HIGH-STRENGTH ULTRAFINE CEMENT, EARLY-STRENGTH ADMIXTURE, AND GROUT FOR REINFORCEMENT OF GROUND USING THOSE

摘要

A manufacturing method of ultra-super fine cement is provided to have excellent penetrability compared with a chemical grouting material, high intensity of a curing body, excellent durability and to achieve enduringly blocking water and ground reinforcement at the same time. A manufacturing method of ultra-super fine cement comprises steps of: cooling quickly and pulverizing silicate and calcium alumino silicate; and mixing powder and portland cement at a mass rate of 3:7 to 7:3. A mixing weight rate of the Portland cement and the powder is 1:1. A blain fineness of the ultra-super fine cement, is 6000 ~ 8000 cm^2/g.