HIGH-FLUIDITY LIGHTWEIGHT MORTAR COMPOSITION AND HIGH-FLUIDITY LIGHTWEIGHT MORTAR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide: a high-fluidity lightweight mortar composition which is light and excellent in fluidity, does not cause bleeding or material separation, is suppressed in swelling after working as a filler for a steel plate lining construction method, has good workability, and exerts sufficient strength; and a high-fluidity lightweight mortar using the same.SOLUTION: A high-fluidity lightweight mortar composition comprises: cement; a blast furnace fine slag powder of a Blaine specific surface area exceeding 6,000 cm/g; an expansive material; light aggregate with a density of 0.1-0.7 kg/l; and a water-soluble cellulosic thickener and an acrylic thickener, but contains no water-reducing agent. The high-fluidity lightweight mortar composition contains 20-70 pts. mass of the cement, 25-75 pts. mass of the blast furnace slag fine powder and 2-10 pts. mass of the expansive material in 100 pts. mass of the binding material consisting of the cement, the blast furnace slag fine powder and the expansive material.