| 冻融循环对玄武岩纤维水泥土力学性能的影响试验 |
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| 引用本文： | 郭少龙,鹿群,林永良,刘有志.冻融循环对玄武岩纤维水泥土力学性能的影响试验[J].水利水电科技进展,2020,40(3):36-43. |
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| 作者姓名： | 郭少龙 鹿群 林永良 刘有志 |
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| 作者单位： | 天津城建大学天津市软土特性与工程环境重点实验室,天津 300384;河海大学水利水电学院,江苏 南京 210098;天津城建大学天津市软土特性与工程环境重点实验室,天津 300384;天津城建大学信息化建设管理中心,天津 300384;天津元旭工程咨询管理有限公司,天津 300191 |
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| 基金项目： | 天津市教委科研计划(2016CJ20) |
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| 摘 要： | 对素水泥土及玄武岩纤维水泥土进行了冻融循环作用前后的无侧限抗压、劈裂抗拉试验,探讨并对比了冻融循环次数、养护龄期、水灰比、纤维掺量等因素对两种水泥土力学性能的影响规律。结果表明:掺入玄武岩纤维后水泥土的冻融强度损失率降低;水泥土的冻融强度损失率随水灰比的增大而增大,随龄期的增大而减小;冻融后水泥土的无侧限抗压强度、劈裂抗拉强度与其受到的冻融循环次数之间的关系可用双曲线拟合;水泥土的劈裂抗拉强度与无侧限抗压强度的比值在14%～17%之间。
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| 关 键 词： | 纤维水泥土 冻融循环 劈裂抗拉试验 双曲线模型 |
Experiments on influence of freeze-thaw cycles on mechanical properties of basalt fiber cement soil |
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| GUO Shaolong,LU Qun,LIN Yongliang,LIU Youzhi.Experiments on influence of freeze-thaw cycles on mechanical properties of basalt fiber cement soil[J].Advances in Science and Technology of Water Resources,2020,40(3):36-43. |
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| Authors: | GUO Shaolong LU Qun LIN Yongliang LIU Youzhi |
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| Affiliation: | Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin Chengjian University, Tianjin 300384, China; College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;Information Construction and Management Center, Tianjin Chengjian University, Tianjin 300348, China; Tianjin Yuanxu Engineering Consultation and Management Co., Ltd., Tianjin 300191, China |
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| Abstract: | The unconfined compressive and split tensile tests of plain cement soil and basalt fiber cement soil before and after freeze-thaw cycles were carried out. The effects of freeze-thaw cycles, curing age, water cement ratio and fiber content on the mechanical properties of the two kinds of cement soil were discussed and compared. The results show that the loss rate of freeze-thaw strength of cement soil decreases after adding basalt fibers. The loss rate of freeze-thaw strength of cement soil increases with the increase of water cement ratio and decreases with the increase of age. The relationship between the unconfined compressive strength, the splitting tensile strength of cement soil after freeze-thaw and the number of freeze-thaw cycles can be fitted by hyperbolic curves. The ratio of splitting tensile strength to unconfined compressive strength is between 14% and 17%. |
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| Keywords: | fiber cement soil freeze-thaw cycle split tensile test hyperbolic model |
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