Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay

Red clay is not easy to use as a natural foundation because of its high water content, high plasticity index, large void ratio, and susceptibility to shrinkage and cracking. In this study, consolidated undrained triaxial tests were conducted to examine the mechanical properties of polypropylene fibe...

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Autores principales:	Jia Liu, Xi’an Li, Gang Li, Jinli Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	red clay polypropylene fiber fiber content fiber length hyperbolic model Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/89686c8ab96a488298efc683c9a11667
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spelling	oai:doaj.org-article:89686c8ab96a488298efc683c9a116672021-11-25T16:30:41ZInvestigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay10.3390/app1122105212076-3417https://doaj.org/article/89686c8ab96a488298efc683c9a116672021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10521https://doaj.org/toc/2076-3417Red clay is not easy to use as a natural foundation because of its high water content, high plasticity index, large void ratio, and susceptibility to shrinkage and cracking. In this study, consolidated undrained triaxial tests were conducted to examine the mechanical properties of polypropylene fiber-reinforced red clay and to analyze the influence of the fiber content (<i>FC</i>), fiber length (<i>FL</i>), and cell pressure on its shear strength. By performing a regression analysis on the test data, a hyperbolic constitutive model that considers the influence of <i>FC</i>, <i>FL</i>, and cell pressure was established, and a method was developed to estimate the parameters of the model. The findings show that, in contrast with the nonreinforced red clay, the fiber-reinforced red clay had a stress-strain curve characterized by typical strain hardening, with the shear strength increasing with <i>FC</i>, <i>FL</i> and cell pressure. The calculated results of the model coincide with the test results well, confirming that the hyperbolic model could appropriately describe the stress-strain relationship of polypropylene fiber-reinforced red clay and have reference value for the design and construction of fiber-reinforced red clay foundations.Jia LiuXi’an LiGang LiJinli ZhangMDPI AGarticlered claypolypropylene fiberfiber contentfiber lengthhyperbolic modelTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10521, p 10521 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	red clay polypropylene fiber fiber content fiber length hyperbolic model Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	red clay polypropylene fiber fiber content fiber length hyperbolic model Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Jia Liu Xi’an Li Gang Li Jinli Zhang Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay
description	Red clay is not easy to use as a natural foundation because of its high water content, high plasticity index, large void ratio, and susceptibility to shrinkage and cracking. In this study, consolidated undrained triaxial tests were conducted to examine the mechanical properties of polypropylene fiber-reinforced red clay and to analyze the influence of the fiber content (<i>FC</i>), fiber length (<i>FL</i>), and cell pressure on its shear strength. By performing a regression analysis on the test data, a hyperbolic constitutive model that considers the influence of <i>FC</i>, <i>FL</i>, and cell pressure was established, and a method was developed to estimate the parameters of the model. The findings show that, in contrast with the nonreinforced red clay, the fiber-reinforced red clay had a stress-strain curve characterized by typical strain hardening, with the shear strength increasing with <i>FC</i>, <i>FL</i> and cell pressure. The calculated results of the model coincide with the test results well, confirming that the hyperbolic model could appropriately describe the stress-strain relationship of polypropylene fiber-reinforced red clay and have reference value for the design and construction of fiber-reinforced red clay foundations.
format	article
author	Jia Liu Xi’an Li Gang Li Jinli Zhang
author_facet	Jia Liu Xi’an Li Gang Li Jinli Zhang
author_sort	Jia Liu
title	Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay
title_short	Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay
title_full	Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay
title_fullStr	Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay
title_full_unstemmed	Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay
title_sort	investigation of the mechanical behavior of polypropylene fiber-reinforced red clay
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/89686c8ab96a488298efc683c9a11667
work_keys_str_mv	AT jialiu investigationofthemechanicalbehaviorofpolypropylenefiberreinforcedredclay AT xianli investigationofthemechanicalbehaviorofpolypropylenefiberreinforcedredclay AT gangli investigationofthemechanicalbehaviorofpolypropylenefiberreinforcedredclay AT jinlizhang investigationofthemechanicalbehaviorofpolypropylenefiberreinforcedredclay
_version_	1718413149318676480

Investigation of the Mechanical Behavior of Polypropylene Fiber-Reinforced Red Clay

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