Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting

Taking the red clay from Guilin, China as the object, this paper prepares red clay samples with different initial water contents, extracts the crack parameters from the images on the samples under cyclic drying and wetting through image processing, and analyzes the laws of crack development. In addi...

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Autores principales:	Yanhua Xie, Binghui Zhang, Baochen Liu, Zhaotian Zeng, Yan Zhang, Yuan Zheng
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Red clay Cyclic drying and wetting Cracks Strength features Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/c472f76eca73491e8120bcf0e0c9f62f
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spelling	oai:doaj.org-article:c472f76eca73491e8120bcf0e0c9f62f2021-12-02T04:59:43ZShrinkage cracking and strength deterioration of red clay under cyclic drying and wetting1110-016810.1016/j.aej.2021.08.011https://doaj.org/article/c472f76eca73491e8120bcf0e0c9f62f2022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1110016821005275https://doaj.org/toc/1110-0168Taking the red clay from Guilin, China as the object, this paper prepares red clay samples with different initial water contents, extracts the crack parameters from the images on the samples under cyclic drying and wetting through image processing, and analyzes the laws of crack development. In addition, parallel red clay samples were subject to shrinkage tests and direct shear tests under the same cyclic drying and wetting. Based on the test results, the authors discussed the laws of shrinkage deformaiton and strength change for the samples under cyclic drying and wetting, and examined the relationship between cracking, shrinkage properties, and strength detiroation of the red clay. The results show that: (1) With the growing crack rate, the volume shrinkage ratio constantly declined; the area shrinkage ratio was generally decreasing, but the decrement was not obvious in local places (in some places, the area shrinkage ratio even increased); the shrinkage coefficient generally declined, (2) Through the five dry-wet cycles, it was learned that the cohesion and internal friction angle of red clay strength can be quantified using the crack rate. This finding lays the basis for judging soil strength based on crack rate, and solving actual engineering problems with the red clay.Yanhua XieBinghui ZhangBaochen LiuZhaotian ZengYan ZhangYuan ZhengElsevierarticleRed clayCyclic drying and wettingCracksStrength featuresEngineering (General). Civil engineering (General)TA1-2040ENAlexandria Engineering Journal, Vol 61, Iss 3, Pp 2574-2588 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Red clay Cyclic drying and wetting Cracks Strength features Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Red clay Cyclic drying and wetting Cracks Strength features Engineering (General). Civil engineering (General) TA1-2040 Yanhua Xie Binghui Zhang Baochen Liu Zhaotian Zeng Yan Zhang Yuan Zheng Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
description	Taking the red clay from Guilin, China as the object, this paper prepares red clay samples with different initial water contents, extracts the crack parameters from the images on the samples under cyclic drying and wetting through image processing, and analyzes the laws of crack development. In addition, parallel red clay samples were subject to shrinkage tests and direct shear tests under the same cyclic drying and wetting. Based on the test results, the authors discussed the laws of shrinkage deformaiton and strength change for the samples under cyclic drying and wetting, and examined the relationship between cracking, shrinkage properties, and strength detiroation of the red clay. The results show that: (1) With the growing crack rate, the volume shrinkage ratio constantly declined; the area shrinkage ratio was generally decreasing, but the decrement was not obvious in local places (in some places, the area shrinkage ratio even increased); the shrinkage coefficient generally declined, (2) Through the five dry-wet cycles, it was learned that the cohesion and internal friction angle of red clay strength can be quantified using the crack rate. This finding lays the basis for judging soil strength based on crack rate, and solving actual engineering problems with the red clay.
format	article
author	Yanhua Xie Binghui Zhang Baochen Liu Zhaotian Zeng Yan Zhang Yuan Zheng
author_facet	Yanhua Xie Binghui Zhang Baochen Liu Zhaotian Zeng Yan Zhang Yuan Zheng
author_sort	Yanhua Xie
title	Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
title_short	Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
title_full	Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
title_fullStr	Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
title_full_unstemmed	Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
title_sort	shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/c472f76eca73491e8120bcf0e0c9f62f
work_keys_str_mv	AT yanhuaxie shrinkagecrackingandstrengthdeteriorationofredclayundercyclicdryingandwetting AT binghuizhang shrinkagecrackingandstrengthdeteriorationofredclayundercyclicdryingandwetting AT baochenliu shrinkagecrackingandstrengthdeteriorationofredclayundercyclicdryingandwetting AT zhaotianzeng shrinkagecrackingandstrengthdeteriorationofredclayundercyclicdryingandwetting AT yanzhang shrinkagecrackingandstrengthdeteriorationofredclayundercyclicdryingandwetting AT yuanzheng shrinkagecrackingandstrengthdeteriorationofredclayundercyclicdryingandwetting
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Shrinkage cracking and strength deterioration of red clay under cyclic drying and wetting

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