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Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites

In view of the fact that it is easy for the ancient city soil site of Cai Kingdom to expand and crack when encountering water, this paper explores the methods to improve the expansion and shrinkage deformation, dry shrinkage cracks and easy water absorption characteristics of the expanded site soil...

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Autores principales: Zhang, Zehuan, Yang, Jianzhong, Yue, Jianwei, Li, Wenhao, Gao, Huijie
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000254/
https://www.ncbi.nlm.nih.gov/pubmed/35407926
http://dx.doi.org/10.3390/ma15072595
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author Zhang, Zehuan
Yang, Jianzhong
Yue, Jianwei
Li, Wenhao
Gao, Huijie
author_facet Zhang, Zehuan
Yang, Jianzhong
Yue, Jianwei
Li, Wenhao
Gao, Huijie
author_sort Zhang, Zehuan
collection PubMed
description In view of the fact that it is easy for the ancient city soil site of Cai Kingdom to expand and crack when encountering water, this paper explores the methods to improve the expansion and shrinkage deformation, dry shrinkage cracks and easy water absorption characteristics of the expanded site soil based on a lime and silicone hydrophobic agent. In this paper, the expansive clay in the old city site of Cai Kingdom in Zhumadian was taken as the research object, and the dry-shrinkage fissure test of saturated expansive soil was carried out, to study the influencing factors of the dry-shrinkage cracking of expansive soil in this area. The site soil was modified with lime and glue powder, and the fissure image was quantitatively analyzed by MATLAB. The test shows that the smaller the particle size, the faster the evaporation of water and the smaller the surface fissure rate; the thicker the thickness of the soil sample, the greater the surface fissure rate and the greater the crack width; and with the increase in the number of drying and wetting cycles, the surface fissure rate of the soil sample increases. In this paper, lime and waterproof materials are used to improve the expansive soil. This not only reduces the dry shrinkage crack rate, but also improves the waterproof performance and durability of expansive soil.
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spelling pubmed-90002542022-04-12 Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites Zhang, Zehuan Yang, Jianzhong Yue, Jianwei Li, Wenhao Gao, Huijie Materials (Basel) Article In view of the fact that it is easy for the ancient city soil site of Cai Kingdom to expand and crack when encountering water, this paper explores the methods to improve the expansion and shrinkage deformation, dry shrinkage cracks and easy water absorption characteristics of the expanded site soil based on a lime and silicone hydrophobic agent. In this paper, the expansive clay in the old city site of Cai Kingdom in Zhumadian was taken as the research object, and the dry-shrinkage fissure test of saturated expansive soil was carried out, to study the influencing factors of the dry-shrinkage cracking of expansive soil in this area. The site soil was modified with lime and glue powder, and the fissure image was quantitatively analyzed by MATLAB. The test shows that the smaller the particle size, the faster the evaporation of water and the smaller the surface fissure rate; the thicker the thickness of the soil sample, the greater the surface fissure rate and the greater the crack width; and with the increase in the number of drying and wetting cycles, the surface fissure rate of the soil sample increases. In this paper, lime and waterproof materials are used to improve the expansive soil. This not only reduces the dry shrinkage crack rate, but also improves the waterproof performance and durability of expansive soil. MDPI 2022-04-01 /pmc/articles/PMC9000254/ /pubmed/35407926 http://dx.doi.org/10.3390/ma15072595 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Zehuan
Yang, Jianzhong
Yue, Jianwei
Li, Wenhao
Gao, Huijie
Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites
title Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites
title_full Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites
title_fullStr Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites
title_full_unstemmed Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites
title_short Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites
title_sort research on the mechanism and prevention methods of the drying shrinkage effect of earthen sites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9000254/
https://www.ncbi.nlm.nih.gov/pubmed/35407926
http://dx.doi.org/10.3390/ma15072595
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