| 石灰和水玻璃改良粉土的水稳定性试验研究 |
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| 引用本文： | 段丽军,张福海,胡明涛,朱文旺,周天宝,王远航.石灰和水玻璃改良粉土的水稳定性试验研究[J].河北工程大学学报,2018,35(4):35-39. |
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| 作者姓名： | 段丽军 张福海 胡明涛 朱文旺 周天宝 王远航 |
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| 作者单位： | 河海大学 岩土力学与堤坝工程教育部重点实验室, 江苏 南京 210098;河海大学 江苏省岩土工程技术工程研究中心, 江苏 南京 210098,河海大学 岩土力学与堤坝工程教育部重点实验室, 江苏 南京 210098;河海大学 江苏省岩土工程技术工程研究中心, 江苏 南京 210098,河海大学 岩土力学与堤坝工程教育部重点实验室, 江苏 南京 210098;河海大学 江苏省岩土工程技术工程研究中心, 江苏 南京 210098,安徽省交通规划设计研究总院股份有限公司, 安徽 合肥 230088,河海大学 岩土力学与堤坝工程教育部重点实验室, 江苏 南京 210098;河海大学 江苏省岩土工程技术工程研究中心, 江苏 南京 210098,河海大学 岩土力学与堤坝工程教育部重点实验室, 江苏 南京 210098;河海大学 江苏省岩土工程技术工程研究中心, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金资助项目（51778211）；江苏省自然科学基金资助项目（BK20171434） |
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| 摘 要： | 通过对泰州某地区粉土添加不同比例的石灰和水玻璃来研究其水稳定性,试验结果表明:在石灰掺量为1%时,改良土的水稳定性极差,浸水24 h后完全崩解,提高石灰掺量或水玻璃掺量均能提升粉土的水稳定性,增加石灰掺量对粉土水稳定性的提高更加显著;石灰掺量相同时,水玻璃掺量越高,石灰和水玻璃改良土的毛细吸水速率越快,水玻璃掺量一定时,石灰掺量越高,石灰和水玻璃改良土的毛细吸水速率先减小后增大;石灰掺量为1%时,改良土的抗冲蚀性能较差,试样冲蚀4 h后破坏较为严重,提高石灰掺量能有效提升土体的抗冲蚀性能。
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| 关 键 词： | 粉土改良 石灰和水玻璃 水稳定性 |
| 收稿时间： | 2018/8/5 0:00:00 |
Experimental study on water stability of lime and water glass modifed silt |
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| Authors: | DUAN Lijun ZHANG Fuhai HU Mingtao ZHU Wenwang ZHOU Tianbao and WANG Yuanhang |
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| Affiliation: | Key laboratory of Ministry of Education of Geomechanics and Embankment Enigeering, Hohai University, Nanjing, Jiangsu 210098, China;Jiangsu Research Center for Geomechanical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China,Key laboratory of Ministry of Education of Geomechanics and Embankment Enigeering, Hohai University, Nanjing, Jiangsu 210098, China;Jiangsu Research Center for Geomechanical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China,Key laboratory of Ministry of Education of Geomechanics and Embankment Enigeering, Hohai University, Nanjing, Jiangsu 210098, China;Jiangsu Research Center for Geomechanical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China,ANHUI TRANSPORT CONSULTING & DESIGN INSTITUTE CO, LTD Hefei Anhui 230088,Key laboratory of Ministry of Education of Geomechanics and Embankment Enigeering, Hohai University, Nanjing, Jiangsu 210098, China;Jiangsu Research Center for Geomechanical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China and Key laboratory of Ministry of Education of Geomechanics and Embankment Enigeering, Hohai University, Nanjing, Jiangsu 210098, China;Jiangsu Research Center for Geomechanical Engineering Technology, Hohai University, Nanjing, Jiangsu 210098, China |
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| Abstract: | In this paper,the water stability is studied by adding different proportions of lime and water glass to the silty soil in Taizhou. The results show that the water stability of the improved soil is very poor when the content of lime is low (1%),and that the water stability of silt can be improved by increasing the content of lime or the amount of water glass after soaking 24h. The increase of lime content is more significant for the improvement of the water stability of silty soil. The amount of lime content is the same,the higher the amount of water glass,the higher the capillary water absorption rate of lime and water glass modified soil,the higher the amount of lime content,the better the capillary water absorption speed of lime and water glass improved soil. When the amount of lime content is low (1%),the erosion resistance of the modified soil is poor. The damage of the specimen after 4h erosion is serious,so the increase of lime content can effectively improve the erosion resistance of the soil. |
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| Keywords: | improvement of silty soil lime and water glass compression Water stability |
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