单向冻结条件下橡胶颗粒改良膨胀土水分迁移及变形特性研究

王罡; 顾博翔; 李娜; 蓝富强; 张晓驰

doi:10.3724/j.gyjzG25061502

单向冻结条件下橡胶颗粒改良膨胀土水分迁移及变形特性研究

doi: 10.3724/j.gyjzG25061502

1. 吉林建筑大学土木工程学院, 长春 130000;
2. 吉林建筑大学交通科学与工程学院, 长春 130000

基金项目:

吉林省教育厅科学研究项目（JJKH20240371KJ）；吉林省高教科研课题（JGJX2022D197）。

详细信息

作者简介:
王罡，博士研究生，讲师，主要从事特殊性土体改良方向研究。Email:wanggang0422@jlju.edu.cn

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出版历程
- 收稿日期: 2025-06-15
- 网络出版日期: 2026-08-31
- 刊出日期: 2026-07-20

Research on Water Migration and Deformation Characteristics of Rubber Granules-modified Expansive Soil Under Unidirectional Freezing Conditions

1. School of Civil Engineering, Jilin Jianzhu University, Changchun 130000, China;
2. College of Transportation Science and Engineering, Jilin Jianzhu University, Changchun 130000, China

摘要

摘要: 废旧轮胎破碎后的橡胶颗粒与土混合可以改善土的工程特性。为了提高废旧轮胎的利用率和解决膨胀土的工程问题，以吉林省九台地区膨胀土为研究对象，在封闭系统条件下对改性膨胀土进行不同因素（含水率、粒径及掺量）的冻胀试验，研究改性膨胀土冻胀、温度及水分迁移的影响因素，分析橡胶颗粒掺量、橡胶颗粒粒径与含水率的耦合影响。结果表明：膨胀土的变形与初始含水率、橡胶颗粒掺量、橡胶颗粒粒径密切相关，低含水率、小粒径橡胶颗粒试样表现为冻缩，高含水率、大粒径橡胶颗粒试样表现为冻胀，适量橡胶颗粒掺量可抑制土样的冻胀与冻缩；膨胀土最终含水率沿高度方向分布特征为已冻区含水率呈递增趋势，冻结锋面区水分聚集，未冻区则呈现递减规律。
- 膨胀土 /
- 橡胶颗粒 /
- 冻胀 /
- 冻结锋面
Abstract: Rubber particles from crushed waste tires mixed with soil can improve the engineering properties of soil. In order to improve the utilization rate of waste tires and solve the engineering problems of expansive soils， this study took the expansive soil in the Jiutai area of Jilin Province as the research object. Freezing and swelling tests of modified expansive soil under different factors （water content， particle size， and mix proportion） were carried out in a closed system to investigate the effects of freezing and swelling， temperature change， and moisture migration on modified expansive soil. This paper analyzed the coupling effects of rubber particle dosage， rubber particle size， and water content. The test results showed that the deformation of expanded soil was closely related to initial water content， rubber particle dosage， and rubber particle size： specimens with low water content and small rubber particle size exhibited frost contraction， while those with high water content and large rubber particle size showed frost expansion. An appropriate amount of rubber particle dosage could suppress both the frost expansion and frost contraction of the soil samples. The distribution of the final water content of the expansive soil along the depth direction was characterized as follows： water content in the frozen area increased， water accumulated in the freezing front， and water content in the unfrozen area decreased.
- expansive soil /
- rubber granules /
- frost expansion /
- freezing fronts

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参考文献(16)

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