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Tensile strength behavior of cement-stabilized dredged sediment reinforced by polypropylene fiber

文献类型：期刊论文

作者Lang, Lei2,3; Li, Jiangshan2,3; Chen, Xin1,2; Han, Lijun1,2; Wang, Ping2,3
刊名FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING
出版日期2024-05-28
页码13
关键词dredged sediment chemical stabilization fiber reinforcement splitting tensile strength micro-mechanisms
ISSN号2095-2430
DOI10.1007/s11709-024-1072-4
英文摘要This study evaluated the feasibility of using polypropylene fiber (PF) as reinforcement in improving tensile strength behavior of cement-stabilized dredged sediment (CDS). The effects of cement content, water content, PF content and length on the tensile strength and stress-strain behavioral evolutions were evaluated by conducting splitting tensile strength tests. Furthermore, the micro-mechanisms characterizing the tensile strength behavior inside PF-reinforced CDS (CPFDS) were clarified via analyzing macro failure and microstructure images. The results indicate that the highest tensile strengths of 7, 28, 60, and 90 d CPFDS were reached at PF contents of 0.6%, 1.0%, 1.0%, and 1.0%, exhibiting values 5.96%, 65.16%, 34.10%, and 35.83% higher than those of CDS, respectively. Short, 3 mm, PF of showed the best reinforcement efficiency. The CPFDS exhibited obvious tensile strain-hardening characteristic, and also had better ductility than CDS. The mix factor (CCa/Cwb) and time parameter (qt0(t)) of CDS, and the reinforcement index (kt-PF) of CPFDS were used to establish the tensile strength prediction models of CDS and CPFDS, considering multiple factors. The PF "bridge effect" and associated cementation-reinforcement coupling actions inside CPFDS were mainly responsible for tensile strength behavior improvement. The key findings contribute to the use of CPFDS as recycled engineering soils.
资助项目National Key R & D Program of China[2020YFC1908703] ; China Postdoctoral Science Foundation[2022M723347]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001233760400002
出版者HIGHER EDUCATION PRESS
源URL[http://119.78.100.198/handle/2S6PX9GI/41517]  
专题中科院武汉岩土力学所
通讯作者Li, Jiangshan
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
3.Hubei Prov Key Lab Contaminated Sludge & Soil Sci, Wuhan 430071, Peoples R China
推荐引用方式
GB/T 7714		 Lang, Lei,Li, Jiangshan,Chen, Xin,et al. Tensile strength behavior of cement-stabilized dredged sediment reinforced by polypropylene fiber[J]. FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING,2024:13.
APA Lang, Lei,Li, Jiangshan,Chen, Xin,Han, Lijun,&Wang, Ping.(2024).Tensile strength behavior of cement-stabilized dredged sediment reinforced by polypropylene fiber.FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING,13.
MLA Lang, Lei,et al."Tensile strength behavior of cement-stabilized dredged sediment reinforced by polypropylene fiber".FRONTIERS OF STRUCTURAL AND CIVIL ENGINEERING (2024):13.

入库方式： OAI收割

来源：武汉岩土力学研究所

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