| 摘要 |
PROBLEM TO BE SOLVED: To provide a durable mortar-based repairing material which is suitable for repairing and reinforcing a concrete structure, exhibits good workability, and substantially avoids elution and mixing of a liquid or solid organic polymer material in water.SOLUTION: A mortar composition for repair contains the following (A) to (E) and does not contain a polymer and fiber for cement: (A) 100 pts.mass of cement, (B) 1-20 pts.mass of metakaolin, (C) 10-30 pts.mass of fine powder of limestone and/or calcium carbonate, (D) 1-5 pts.mass of an expanding material, and (E) 100-300 pts.mass of fine aggregate. The mortar composition for repair may further contain 0.15-1.5 pts.mass, in total, of (F) a water reducing agent, (G) a thickener and (H) a defoaming agent, relative to 100 pts.mass of cement. |
