POLYMER QUICKLY HARDENING CONCRETE COMPOSITION AND BRIDGE EXPANDING AND CONTRACTING CONNECTING PORTION REPAIRING METHOD THEREUSING

摘要

The present invention relates to a quantized polymer superhard concrete composition and a bridge construction joint repair method using the same, which enables a short-term curing property and high-strength effect on a powder-based inorganic admixture capable of stably expressing strength and securing durability. It is composed of calcium sulfoaluminate-based clinker, calcium aluminate-based clinker, anhydrous gypsum, slaked lime, additives, etc., and contains low-heat special cement and aggregate, polymer modifier, and water. Polymer superhard concrete composition according to the present invention is low-heat special cement mortar 50-60% by weight; Aggregate 32-42% by weight; 3 to 5% by weight of a polymer modifier; And 3 to 5% by weight of water. The present invention repairs the expansion joint of the bridge rapidly using a mobile mixer and a mobile discharge conveyor for polymer superhard concrete.