| 摘要 |
The present invention relates to a composition for repairing a cross-sectional surface of a concrete structure, and to a method for finishing a repaired cross-sectional surface of a concrete structure by using the same. The composition comprises 20-90 wt% of a mineral binder, 1-60 wt% of a function improving admixture, and 1-30 wt% of water. The function improving admixture comprises 35-98 wt% of methylacrylate-hydroxymethylmethacrylate, 1-45 wt% of vinyl acetate-butylmalate, 0.1-35 wt% of styrene-butadiene-acrylic acid, 0.1-25 wt% of caboxylated polyethylene, and 0.01-25 wt% of vinylidene chloride-vinyl chloride. According to the present invention, fluidity, flexural strength, tensile strength, adhesive strength, and durability are excellent, and flexural toughness, salt damage resistance, neutralization resistance, freezing and thawing resistance, and surface hardness are improved. Also, early strength can be expressed, and a construction period can be decreased, so traffic opening time can be reduced. |
