ALUMINA CEMENT COMPOSITION AND REPAIRING METHOD USING THE SAME

• Main Authors: KUSHIHASHI TAKUMI, ARAKI AKITOSHI, MIZUSHIMA KAZUYUKI, TERASAKI SEIICHI
• Format: Patent
• Language: English
• Published: 09.11.2006
• Subjects: ARTIFICIAL STONE; BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; CEMENTS; CERAMICS; CESSPOOLS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SEWERAGE; SEWERS; SHUTTERING; SLAG; TREATMENT OF NATURAL STONE; WATER SUPPLY

PROBLEM TO BE SOLVED: To provide an alumina cement composition used for the repairing of a degraded concrete structure and excellent in workability, low temperature hardening performance, initial crack resistance, strength development, sulfuric acid resistance and the like and having improved long term durability, and a repairing method using the same. SOLUTION: The alumina cement composition contains alumina cement, a pozzolan material and a polymer fiber having 2-15 mm length and aspect ratio of 300-1,000 and further contains a fluidizing agent, a lithium salt, a water absorption preventing agent, a polymer for cement admixture and aggregate. The method of repairing the concrete structure uses the alumina cement composition. COPYRIGHT: (C)2007,JPO&INPIT