文献类型：期刊文献

英文题名：Frost resistance property of concrete doped with scrap rubber powder in sodium sulfate solution erosion environment

作者：Zhao, Lei[1,2]; Han, Yu[3]; Wang, Baomin[4]; Kang, Yong[3]; Zhang, Qi[5]

第一作者：Zhao, Lei;赵磊

通讯作者：Han, Yu

机构：[1] Department of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, China; [2] Department of Civil Engineering and Architecture, Xinxiang University, Xinxiang, 453000, China; [3] Liaoning Building Science Research Institute, Heping South Street No. 88, Shenyang, 110005, China; [4] School of Civil Engineering, Dalian University of Technology, Dalian, 116024, China; [5] College of Electromechanical and Information Engineering, Dalian Nationalities University, Dalian, 116600, China

第一机构：Department of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, 430070, China

年份：2015

卷号：41

期号：3

起止页码：304-314

外文期刊名：Journal of Solid Waste Technology and Management

收录：EI(收录号：20160501876545);Scopus(收录号：2-s2.0-84961310944)

语种：英文

外文关键词：Elastic moduli - Erosion - Freezing - Frost resistance - Powders - Rubber - Scanning electron microscopy - Sodium sulfate - Sulfur compounds - Thawing

摘要：The quick frost method was used to measure the mass loss rate and relative dynamic elastic modulus of rubberized concrete and ordinary concrete. The frost resistance property of the rubberized concrete in sodium sulfate solution environment was studied by comparing the difference of mass loss rate and relative dynamic elastic modulus between rubberized concrete and ordinary concrete. The results shown that rubberized concrete in sulfate behave superior antifreeze performance than the corresponding ordinary concrete. The scanning electron microscope, mercury intrusion method, hardening bubbles method were used to study the mechanism of rubberized concrete's freeze-thaw durability. Through analysis, it was known that rubber powder in concrete acts as a solid air-entraining agent. Freeze-thaw damage made the micropores increased. The crystallization of sodium sulfate blocked the micro-holes of concrete. Fine rubber powders reduce the bubbles spacing coefficient and increase the number of bubbles. Rubber powders as micro "solid stomatal" improve the porosity of concrete, so that the antifreeze performance enhanced. Through the microstructure observation of rubberized concrete during freeze-thaw cycles it was found that rubber powders do not participate in the hydration reaction, while they appear as filling material.