| 摘要 |
The present invention relates to a functional polymer-mixed quick-hardening cement concrete composition and a repairing method for a concrete structure using the same, wherein the functional polymer-mixed quick-hardening cement concrete composition includes 3-40 wt% of a quick-hardening cement-based binder, 25-70 wt% of a fine aggregate, 20-65 wt% of a coarse aggregate, 0.1-20 wt% of water, and 0.01-15 wt% of a polymer-based function improver, and the polymer-based function improver comprises: 10-75 wt% of polystyrene, 5-45 wt% of styrene-acryl ester, 10-40 wt% of butylmethacrylate, 5-30 wt% of methyl acrylate, 0.1-15 wt% of polyethylene, and 0.1-15 wt% of polymethylacrylate. By means of the polymer-mixed quick-hardening cement concrete composition, workability is improved, and the durability of concrete is improved. In particular, bending strength, tensile strength, early strength, long-term strength, and freezing and thawing resistance are improved, so that defects in concrete can be reduced. |
