| 膨润土加砂混合物非饱和三轴试验研究 |
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| 引用本文： | 李培勇,杨庆.膨润土加砂混合物非饱和三轴试验研究[J].大连理工大学学报,2011,51(3):387-392. |
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| 作者姓名： | 李培勇 杨庆 |
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| 作者单位： | 大连交通大学土木与安全工程学院;大连理工大学土木工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(50679015) |
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| 摘 要： | 采用GDS三轴仪试验系统对膨润土加砂混合物进行了饱和与非饱和状态下三轴固结排水剪切试验研究.试验结果表明非饱和状态下膨润土加砂混合物的应力应变关系曲线与饱和状态下混合物的应力应变关系曲线具有相似的形态,均为硬化型.随着基质吸力或净围压力的增加,最大偏应力均增大.试样发生鼓状破坏,并且无明显破坏带.非饱和状态下膨润土加砂...
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| 关 键 词： | 膨润土加砂混合物 非饱和三轴试验 抗剪强度 |
Study of unsaturated triaxial tests for bentonite-sand mixtures |
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| LI Peiyong,YANG Qing.Study of unsaturated triaxial tests for bentonite-sand mixtures[J].Journal of Dalian University of Technology,2011,51(3):387-392. |
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| Authors: | LI Peiyong YANG Qing |
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| Institution: | LI Pei-yong*1,YANG Qing2(1.School of Civil and Safety Engineering,Dalian Jiaotong University,Dalian 116028,China,2.School of Civil Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | Studies on consolidated drained triaxial tests for bentonite-sand mixtures under saturated and unsaturated states are presented by utilizing GDS triaxial test system.Experimental results indicate that stress-strain curves of unsaturated bentonite-sand mixtures are similar to the curves of saturated bentonite-sand mixtures,which are hardening curves.Maximum deviatoric stress increases as matrix suction or net confining pressure increases.For all test samples,barrel deformation happens and no obvious shear fa... |
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| Keywords: | bentonite-sand mixtures unsaturated triaxial tests shear strength |
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