文献类型：期刊文献

英文题名：Frost Resistance and Pore Structure of Concrete Incorporated with Rubber Aggregates and Nano-SiO2

作者：Fang, Jun[1];Zhao, Lei[1,2];Shi, Jicun[2]

第一作者：Fang, Jun

通讯作者：Zhao, L[1];Zhao, L[2]

机构：[1]Wuhan Univ Technol, Sch Civil Engn & Architecture, Wuhan 430070, Peoples R China;[2]Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Henan, Peoples R China

第一机构：Wuhan Univ Technol, Sch Civil Engn & Architecture, Wuhan 430070, Peoples R China

通讯机构：[1]corresponding author), Wuhan Univ Technol, Sch Civil Engn & Architecture, Wuhan 430070, Peoples R China;[2]corresponding author), Xinxiang Univ, Sch Civil Engn & Architecture, Xinxiang 453003, Henan, Peoples R China.|[1107114]新乡学院土木工程与建筑学院;[11071]新乡学院;

年份：2021

卷号：14

期号：5

起止页码：1-15

外文期刊名：MATERIALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000628351400001)】；

基金：This study was supported by the Science and Technology Project of Henan Province (Nos. 212102310038). The authors gratefully acknowledge the financial support.

语种：英文

外文关键词：concrete; frost-resistant; freeze– thaw; pore structure; rubber; nanosilica

摘要：This paper aims to develop frost-resistant concretes, and investigate their pore structures and freeze-thaw damage mechanism. The frost-resistant concrete mixtures are designed by using rubber particles and nano-SiO2 to partially replace sands. The chord lengths, specific surface areas, contents and spacing coefficients of the pores in the designed concretes are measured and analyzed. The results show that concrete mixture incorporated with 5% silanized rubber and 3% nanosilica shows good synergetic effect by considering both mass loss and relative dynamic modulus of elasticity (RDME). The freeze-thaw damage degree of the concrete could be reduced by adding high elastic rubber particles, due to filling and constraining pores, and resulting in better uniform pore distribution and smaller pore spacing coefficient. Furthermore, the correlations between frost resistance and pore are analyzed and proposed.