GROUT MATERIAL AND GROUT CONSTRUCTION METHOD USING THE SAME

• Main Authors: SHIRAIWA TORU, OTSUKA TETSUO, ARAKI AKITOSHI, YAGI TORU
• Format: Patent
• Language: English
• Published: 24.07.2008
• Subjects: ARTIFICIAL STONE; ASSEMBLY OF BRIDGES; BUILDING; BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; FORMS; HANDLING BUILDING MATERIALS ON THE SITE; LIME, MAGNESIA; METALLURGY; OR VIADUCTS; REFRACTORIES; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS; SCAFFOLDING; SHUTTERING; SLAG; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a grout material which does not cause decrease in the material segregation resistance, is excellent in crack resistance and also has high material segregation resistance, maintains high fluidity, does not generate air bubbles, and exhibits good strength characteristics and durability; and to provide a grout construction method using the same. SOLUTION: The grout material contains cement, a polymer dispersion being a re-emulsifying type powdery resin of an acrylic acid ester copolymer, an expansive additive, a specified powdery dry shrinkage reducing agent, a dispersing agent obtained by blending one or more kinds selected from a melamine-based dispersing agent, a naphthalene-based dispersing agent, and a lignin-based dispersing agent with a polycarboxylic acid-based dispersing agent, and aggregate. The ratio of unit volume mass of a kneaded material obtained by kneading the grout material and water is ≥1.05, and the ratio of the neutralized depth of a cured material of the kneaded material is ≤0.95. The grout construction method comprises adding water to the grout material, then kneading the resulting mixture and feeding the obtained kneaded material into a place to be filled. COPYRIGHT: (C)2008,JPO&INPIT