| abstract |
In the biopolymer-containing fast-setting cement concrete composition having excellent cracking suppression effect of the present invention, functional polymer 1 to 30% by weight, binder 5 to 40% by weight, fine aggregate 5 to 60% by weight, coarse aggregate 5 to 40% by weight, and Including 0.5 to 10% by weight of the blending water, the functional polymer is styrene butadiene latex 40 to 80 parts by weight biopolymer 5 to 35 parts by weight, triisopropyl borate 0.1 to 10 parts by weight, hydrogenated polyterpene 0.1 to 10 parts by weight , 1 to 5 parts by weight of thiodiphosphate, 1 to 15 parts by weight of a spherical ethylene-ethyl acrylate-maleic anhydride copolymer having an average particle diameter of 3 to 12 μm, and 0.1 to 10 parts by weight of a polycarboxylic acid water reducing agent, The biopolymer contains 60% to 95% by weight of poly(lactic acid) and 5% to 40% by weight of poly(3-hydroxypropionate), The binder is Portland cement 30 to 50 parts by weight, calcium sulfoaluminate 28 to 45 parts by weight, alumina cement 10 to 25 parts by weight, blast furnace slag powder 5 to 10 parts by weight, anhydrous gypsum 5 to 20 parts by weight, slaked lime 2 to 10 By using a substance containing 0.01 to 10 parts by weight of metakaolin, it is possible to obtain a property effect equal to or higher than that of latex, a petroleum-derived polymer used for conventional concrete reforming, while at the same time improving environmental pollution by using a polymer made of an eco-friendly material. It relates to a biopolymer-containing fast-setting cement concrete composition with excellent cracking inhibiting effect and a road pavement repair method using the same. |