| 橡胶水泥土强度特性与机理的试验研究 |
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| 引用本文： | 王凤池,燕晓,刘涛,叶霄鹏,刘磊.橡胶水泥土强度特性与机理的试验研究[J].四川大学学报(工程科学版),2010,42(2):46-51. |
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| 作者姓名： | 王凤池 燕晓 刘涛 叶霄鹏 刘磊 |
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| 作者单位： | 沈阳建筑大学,土木工程学院,辽宁,沈阳,110168 |
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| 基金项目： | 国家自然科学基金资助项目(50778115) |
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| 摘 要： | 为了改良水泥土,提出将土、橡胶粉、水泥等强制搅拌形成新型水泥土复合体-橡胶水泥土(RCS).通过对橡胶水泥土应力-应变曲线、无侧限抗压强度的试验测试,得到了水泥掺量、橡胶粉掺量、橡胶粉粒径等因素对橡胶水泥土强度的影响并分析了内在机理.橡胶水泥土的应力-应变曲线发展基本经历弹性、弹塑性及塑性3个阶段,峰值应变高于水泥土.橡胶水泥土强度随着水泥掺量的增大而提高,随着橡胶粉掺量的增加而降低;粒径对橡胶水泥土强度的影响与水泥掺量有关,可能存在最优粒径问题.试验表明橡胶粉在水泥土中充当软性弹性体的作用,能够缓和内部原生裂纹的发生与扩展,因而改善和提高水泥土的塑性变形性能.
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| 关 键 词： | 橡胶水泥土 水泥土 橡胶粉 无侧限抗压强度 应力-应变曲线 |
| 收稿时间： | 2009/3/25 0:00:00 |
| 修稿时间： | 7/6/2009 12:00:00 AM |
Research on Strength Characteristics and Mechanism of Rubberized Cement-soil |
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| Wang Fengchi,Yan Xiao,Liu Tao,Ye Xiaopeng and Liu Lei.Research on Strength Characteristics and Mechanism of Rubberized Cement-soil[J].Journal of Sichuan University (Engineering Science Edition),2010,42(2):46-51. |
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| Authors: | Wang Fengchi Yan Xiao Liu Tao Ye Xiaopeng and Liu Lei |
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| Affiliation: | WANG Feng-chi,YAN Xiao,LIU Tao,YE Xiao-peng,LIU Lei (School of Civil Eng.,Shenyang Jianzhu Univ.,Shenyang 110168,China) |
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| Abstract: | In order to improve cement-soil,a new type cement-soil named rubberized cement-soil (RCS) was put forward,which was made by the forced mixing of soft soil,rubber powder,and cement.By means of tests on stress-strain curves and confined compressive strength,effects of cement content,rubber powder content and particle diameter on RCS strength were obtained.Intrinsic mechanics of RCS was further analyzed.Stress-strain curve of RCS developed through three stages,which named elastic stage,elasto-plastic stage and... |
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| Keywords: | rubberized cement-soil cement-soil rubber powder confined compressive strength stress-strain curve |
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