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纤维对石灰改良膨胀土性质的影响分析
引用本文:李治朋,张宇亭,马希磊.纤维对石灰改良膨胀土性质的影响分析[J].岩土工程技术,2011,25(4):214-216,F0003.
作者姓名:李治朋  张宇亭  马希磊
作者单位:交通部天津水运工程科学研究所,天津,300456;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
摘    要:首先对膨胀土基本性质做了试验分析,通过天然膨胀土和掺人纤维前后的石灰土的击实试验,得出了掺人少量纤维对石灰土的最优含水率和最大干密度影响很小.通过有荷膨胀率试验,得出了纤维能够抑制石灰土的膨胀性,纤维掺人量在0.05%~0.1%之间时,线膨胀率随纤维掺人量的增多而降低显著,在0.1%~0.2%之间时降低幅度减小.由无侧...

关 键 词:纤维  石灰  膨胀土  膨胀率  强度  加筋

Analysis on the Impact of Fibers on the Property of Expansive Soil Reinforced with Lime
Li Zhipeng,Zhang Yuting,Ma Xilei.Analysis on the Impact of Fibers on the Property of Expansive Soil Reinforced with Lime[J].Geotechnical Engineering Technique,2011,25(4):214-216,F0003.
Authors:Li Zhipeng  Zhang Yuting  Ma Xilei
Institution:Li Zhipeng Zhang Yuting Ma Xilei (1 Tianjin Research Institute for Water Transport Engineering, Tianjin 300456, China)
Abstract:The researcher first did experimental analysis on the basic property of expansive soil, and the compaction test on natural expansive soil and on lime soil with and without fibers. The conclusion is that the lime soil with a small quantity of fibers has little effect on optimum moisture content and the maximum dry density. According to the linear swelling ratio experiment, the researcher concludes that fibers can retain the expansion of the lime. The linear expansion rate decreases remarkably with the increasing of the mixing amount of fibers between 0.05% - 0.1%, but slightly between 0.1% - 0.2%. With the unconfined compaction test and CBR ( California Bearing Ratio), fibers which are reinforced can increase the compressive press of the lime, and the practicability of the above method is evaluated in this paper.
Keywords:fibers  lime  expansive soil  expansion rate  compressive press  reinforce
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