文献类型：期刊文献

英文题名：Freeze-Thaw Damage Model of Polypropylene Fiber Reinforced Cement Stabilized Waste Construction Slurry under Uniaxial Action

作者：Jiang, Ping[1];Zhou, Lin[1];Wang, Yue[1];Qian, Biao[2];Wang, Wei[1];Li, Na[1];Zhang, Fang[1]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Tongchuang Engn Design Co Ltd, Shaoxing 312000, Peoples R China

年份：2021

卷号：11

期号：7

外文期刊名：MINERALS

收录：SCI-EXPANDED(收录号：WOS:000676620500001)、、Scopus(收录号：2-s2.0-85109136555)、WOS

基金：This research was funded by the National Natural Science Foundation of China (Grant number [41772311]), the Zhejiang Provincial Natural Science Foundation of China (Grant number [Q20E080042]), the Open Research Fund of Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering of Hohai University (Grant number [2019020]) and the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Science (Grant number [Z017013]).

语种：英文

外文关键词：waste construction slurry; freeze-thaw cycle; stress-strain relationship; damage model; particle swarm optimization algorithm

外文摘要：In order to apply the fiber reinforced cement stabilized waste construction slurry more widely, it is crucial to evaluate its mechanical behavior under freeze and thaw (F-T) cycles. The mechanical properties of fiber cement-modified waste construction slurry (FCMS) under five different F-T cycles were studied using unconfined compressive strength tests. One fixed cement sample with five different types of polypropylene fiber was used in the FCMS. Using the meso random damage model, the two-stage damage stress-strain relationship of FCMS was established using particle swarm optimization (PSO). The results were as follows: (1) The mechanical properties of FCMS at room temperature and in an F-T environment were significantly improved by fiber; (2) The elastic modulus of FCMS decreased in the form of a power function with the increase of F-T cycles; (3) The fitting results of the two-stage F-T damage model based on meso random damage theory were in agreement with the measured data.