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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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/7/2595 |
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| author | Zehuan Zhang Jianzhong Yang Jianwei Yue Wenhao Li Huijie Gao |
| author_facet | Zehuan Zhang Jianzhong Yang Jianwei Yue Wenhao Li Huijie Gao |
| author_sort | Zehuan Zhang |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T11:40:07Z |
| format | Article |
| id | doaj.art-3408a70ec31846b2b61bae581d5de0f6 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:40:07Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-3408a70ec31846b2b61bae581d5de0f62023-11-30T23:34:19ZengMDPI AGMaterials1996-19442022-04-01157259510.3390/ma15072595Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen SitesZehuan Zhang0Jianzhong Yang1Jianwei Yue2Wenhao Li3Huijie Gao4School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering, Zhengzhou University, Zhengzhou 450001, ChinaSchool of Civil Engineering and Architecture, Henan University, Kaifeng 475004, ChinaSchool of Civil Engineering and Architecture, Henan University, Kaifeng 475004, ChinaSchool of Civil Engineering and Architecture, Henan University, Kaifeng 475004, ChinaIn 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.https://www.mdpi.com/1996-1944/15/7/2595expansive soilexpansibility and contractilitycrackwet and dry cyclelime improvementwaterproof |
| spellingShingle | Zehuan Zhang Jianzhong Yang Jianwei Yue Wenhao Li Huijie Gao Research on the Mechanism and Prevention Methods of the Drying Shrinkage Effect of Earthen Sites Materials expansive soil expansibility and contractility crack wet and dry cycle lime improvement waterproof |
| 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 | expansive soil expansibility and contractility crack wet and dry cycle lime improvement waterproof |
| url | https://www.mdpi.com/1996-1944/15/7/2595 |
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