| abstract |
The present invention relates to a polymeric cement concrete composition having excellent flexural toughness and durability and a method of repairing and reinforcing a road pavement using the same. The present invention provides a new polymeric cement concrete composition comprising 3 to 45% by weight of ultra fast cement binder, 5 to 85% by weight of fine aggregate, 0.01 to 30% by weight of a functional admixture, and 0.1 to 30% by weight of water. Wherein the quick-setting binder comprises 5 to 65% by weight of crude steel Portland cement, 3 to 55% by weight of magnesium or calcium sulfoaluminate, 1 to 45% by weight of tricalcium aluminate cement, 0.5 to 30% by weight of tritide, Wherein the functional admixture comprises 0.01 to 10% by weight of an alkali metal silicate, 0.01 to 10% by weight of an alkali metal silicate, 0.01 to 10% by weight of a lithium carbonate, and 0.01 to 10% Is a copolymer of methyl methacrylate-styrene-acrylonitrile copolymer 30 to 96% by weight, polybutylene terephthalate 1 to 30% by weight, dimethylaminoethyl acrylate 1 to 25% by weight, ethyl acrylate- , 0.01 to 10 wt% of octadecyltrimethoxysilane, 0.001 to 10 wt% of a graphene dispersion, 0.01 to 10 wt% of a water reducing agent, and 0.01 to 10 wt% of an antifoaming agent. Accordingly, it improves the concrete strength, particularly bending and tensile strength, improves the crack resistance due to drying shrinkage, greatly improves durability such as waterproofness, corrosion resistance, abrasion resistance and chemical resistance, and promotes early hydration and densification of the cement It can improve the strength and durability of concrete, especially bending and tensile strength, waterproofness, corrosion resistance, abrasion resistance, chemical resistance, etc. by using concrete, and it is also possible to make cracks and expansion due to drying shrinkage by using expansion agent and shrinkage reducing agent. There is an effect of preventing the destruction phenomenon. |