| 摘要 |
PROBLEM TO BE SOLVED: To improve the flowability of a repairing material, to dispense with application work using a trowel, etc., while making a mixing ratio of water be not larger than a specific value and to effectively repair faults by including minute hollow spherical particles in a repairing material filled in the faults in the surface of concrete. SOLUTION: This concrete-repairing material comprising minute hollow spherical particles, cement and aggregate contains a polymer dispersion (e.g. a liquid acrylic resin-based, a vinyl acetate copolymer resin-based or an acrylic- styrene copolymer resin-based) or water in an amount of <=15 wt.%. The minute hollow spherical particles are called microspheres, microballoons, hollow bubbles or a syntactic foam material, and has a diameter of 5-300μm and the specific gravity 0.6-0.8. Air exists in the above particles and therefore makes their weight lighter than that of solid particles of the same volume. The particles are made of a aluminosilicate-based inorganic filler material. In order to repair faults, the repairing material is taken in operator's hand and is filled into pinholes or the like. |
