EARLY STRENGTH POLYMER MODIFIED CEMENT CONCRETE COMPOSITE AND REPAIRING METHOD OF CONCRETE STRUCTURE USING THE COMPOSITE,申请号KR20140067468-传众专利搜索

EARLY STRENGTH POLYMER MODIFIED CEMENT CONCRETE COMPOSITE AND REPAIRING METHOD OF CONCRETE STRUCTURE USING THE COMPOSITE

申请公布号：KR101456676(B1)

申请号：KR20140067468

申请日期：2014.06.03

申请公布日期：2014.11.04

申请人：

YOUNCHANG ENC CO., LTD.

发明人：KANG, IN DONG

分类号：C04B26/06;C04B22/14;C04B24/24;C04B26/02

主分类号：C04B26/06

摘要：<p>The present invention relates to an ultrahigh early strength cement concrete composition which includes 4-30 wt% of a rapidly hardening binder, 25-65 wt% of fine aggregates, 20-60 wt% of coarse aggregates, 0.1-15 wt% of water, and 0.01-15 wt% of a polymer admixture agent, wherein the rapidly hardening binder is a coupling agent that realizes strength at a material age of 12 hours and generally includes 20-55 wt% of Portland cement, 5-40 wt% of calcium or magnesium sulfoaluminate, 0.1-25 wt% of aluminate, 0.01-20 wt% of plaster, 0.01-20 wt% of blast furnace slag, 0.01-20 wt% of fly ash, 0.01-10 wt% of aluminum hydroxide, and 0.01-10 wt% of barium sulfate, wherein the polymer admixture agent includes 50-99 wt% of methyl methacrylate, 0.1-25 wt% of styrene, 0.1-15 wt% of butyl acrylate, 0.01-10 wt% of polyethylene propylene, 0.01-10 wt% of itaconic acid, 0.01-10 wt% of sodium persulfate, and 0.01-10 wt% of process oil, to a method for manufacturing the same, and to a method for maintaining and repairing a concrete structure using the composition. The present invention can improve work efficiency of concrete and improve durability of concrete, and in particular, can reduce defects of concrete by improving bending strength, tensile strength, initial strength, long-term strength, resistance to chloride attack, and resistance to freezing and thawing.</p>