Experimental research on modified polymer concrete
Jin-minGuo1, Yi Wang2
COMPUTER MODELLING & NEW TECHNOLOGIES 201418(12D) 24-27
1School of Transportation Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467036,China
2School of Civil Engineering, Henan University of Urban Construction, Pingdingshan, Henan 467036,China
A sort of high performance modified polymer concrete was needed to develop as while as the maturing and function defecting of concrete become one common issue for dam engineering, coffering engineering and foundation engineering of hydraulic structure. In order to researching the compositeadditive of polymer concrete and the influence of silica fume mixing proportion on polymer concrete, A series of orthogonal tests were processed. Firstly, an optimum mixing proportion of the compositeadditive was proposed, the antifoaming agent is 1.5% of polymer emulsion, the water reducing agent is 1.2% of cement and the stabilizing agent is 3% of polymer emulsion. Secondly, the result shows that the compressive strength, rupture strength and splitting tensile strength of polymer concretefirstly increases and then decreases with the increase of themixing amount of silica fume and the mechanical properties will be optimized at mixing amount of 12%. Thirdly, compared with ordinary concrete, the modified polymer concrete raised the compressive strength 11.2%, the rupture strength 8.3%, splitting tensile strength 11.4% and improved the impermeability 4.4 times on the 28th day.Finally, the action mechanisms of the modified polymer concrete are analyzed.