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《Concrete》 2013-11
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Effect of compound expansive agent on the mechanical behavior and deformation behavior of high performance concrete

KONG Xiangfu;GUO Fei;TIAN Qian;ZHANG Shouzhi;Jiangsu Research Institute of Building Science Co.,Ltd.;State Key Laboratory of High Performance Civil Engineering Material,Jiangsu Research Institute of Building Science;  
Two compound expansive agents were selected to discuss the mechanical behavior and deformation behavior of C30 and C50high performance concrete.The results showed that the compound expansive agent with external mixing raised the compressive strength of high performance concrete,increase amplitude of 28 d compressive strength is 2%~5%;the humidity sensitivity of SBT JM-MC(II)is smaller,it can better compensate the drying shrinkage of concrete with low water binder ratio,and it is more suitable for high performance concrete;concrete with SBT JM-MC(II)cracked significantly later than reference concrete,and the crack width is significantly smaller too.
【Fund】: 国家杰出青年科学基金(51225801);; “十二五”国家科技支撑计划(2011BAE27B01-2)
【CateGory Index】: TU528.042.4
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