| 石灰改良膨胀土无侧限抗压强度试验 |
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| 引用本文： | 陈爱军,张家生,刘君.石灰改良膨胀土无侧限抗压强度试验[J].桂林工学院学报,2011,31(1):91-95. |
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| 作者姓名： | 陈爱军 张家生 刘君 |
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| 作者单位： | 湖南工程学院建筑工程学院;中南大学土木建筑学院; |
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| 基金项目： | 交通部西部交通科技项目(2002318000015) |
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| 摘 要： | 结合广西南友公路膨胀土路堤试验段,开展石灰改良膨胀土无侧限抗压强度试验。结果表明：素膨胀土试件浸水后全部崩解,该区膨胀土的水稳性很差;部分养生7 d和14 d的石灰改良土试件也在浸水时崩解,主要是由于龄期较短,改良土中产生的CaCO3较少导致联结作用较弱,改良土无侧限抗压强度采用养生28 d龄期的强度值较合适;掺灰率和养护龄期对改良土无侧限抗压强度的影响较大,且石灰改良土存在最优掺灰率,无侧限抗压强度与龄期在养护初期表现为线性增大关系。
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| 关 键 词： | 膨胀土 石灰改良 崩解 无侧限抗压强度 |
Experiment on Unconfined Compressive Strength of Lime Improving Expansive Clay |
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| CHEN Ai-jun,ZHANG Jia-sheng,LIU Jun.Experiment on Unconfined Compressive Strength of Lime Improving Expansive Clay[J].Journal of Guilin University of Technology,2011,31(1):91-95. |
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| Authors: | CHEN Ai-jun ZHANG Jia-sheng LIU Jun |
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| Affiliation: | CHEN Ai-jun1,2,ZHANG Jia-sheng2,LIU Jun1(1.School of Architecture Engineering,Hunan Institute of Engineering,Xiangtan 411108,China,2.School of Civil Engineering and Architecture,Central South University,Changsha 410083,China) |
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| Abstract: | Based on the expansive clay embankment on Nanyou Highway of Guangxi,the experimental research on the unconfined compressive strength is undertaken.In the test expansive clay samples are all disintegrated when dipping in water,showing poor stability of expansive clay.Some lime improving samples after 7 and 14 days curling are disintegrated when dipping in water,indicating that the unconfined compressive strength sample of lime improving expansive clay should curl 28 days.Lime ratio and curing time both influ... |
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| Keywords: | expansive clay lime improving disintegration unconfined compressive strength |
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