PRODUCTION OF WATER-PERMEABLE CELLULAR MORTAR AND THE MORTAR AND MORTAR MATERIAL USED THEREFOR

• Main Authors: TOKUMITSU YOSUKE, FURUSAWA TAKAO, TOMIYAMA TORU, MUROOKA SEISABURO, HANAWA SHIYOUTARO, MIYASHITA KOJI
• Format: Patent
• Language: English
• Published: 09.05.2000
• Edition: 7
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a method for producing water-permeable cellular mortar having excellent flowability, excellent early strength and excellent underwater non-separability by kneading an early strength underwater non-separable mortar material comprising a superquick hardening cement, fine aggregates and a thickening agent with water and air bubbles prepared from a foaming agent and water. SOLUTION: The superquick hardening cement is a cement represented by formulas: C11A7, CaF2, C12A7, C3A, CA, etc., wherein C is CaO; A is Al2O3. The fine aggregates include river sand, crushed sand, silica sand, etc. A coagulation retarder includes citric acid and sodium carbonate. A high performance water reducer includes polycarboxylate-based polymeric compounds and alkylallylsulfonic acid salts. The thickening agent includes methyl cellulose and polyacrylamide. The foaming agent includes higher alkyl ether sulfate ester salts and polyethylene glycol type nonionic surfactants. The mortal preferably comprises 100 pts.wt. of a superquick hardening cement, 200-500 pts.wt. of fine aggregates, 0.05-5 pts.wt. of a coagulation retarder, 0.05-2 pts.wt. of a high performance water reducer and 0.05-2 pts.wt. of a thickening agent.