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水泥土芯样的微观结构特征研究
Research on structure of cemented-soil
【摘要】 在大量试验基础上,引入电阻率不规则因子概念,探讨了无侧限抗压强度过程中水泥土芯样应变随其电阻率不规则因子变化而发生变化的内在关联,揭示了水泥土受荷应变下的内在结构机理。同时,在电阻率不规则因子基础上,提出了水泥土加强因子概念,得到了水泥土初始加强因子与其相应的无侧限抗压强度、标贯击数、破坏应变之间的紧密相关关系,从而,探讨了用初始加强因子预估水泥土样宏观力学变形指标的可能性。
【Abstract】 Considering the test results,electrical resistivity anomaly concept is introduced in this paper. Meanwhile,it is illustrated that the strain of cemented soil under the unconfined compression correlates closely with its electrical resistivity anomaly; accordingly,the inner structural mechanism of strain behavior is revealed. In addition,reinforce factor idea of cemented soil is presented,and it is demonstrated that there are good correlations between the initial reinforce factor of cemented soil and its unconfined compression strength and the number of standard penetration and the failure strain,consequently,the initial reinforce factor of cemented soil can be used to evaluate these macrophysics indices.
【Key words】 cemented soil; electrical resistivity anisotropy; unconfined compression strength; the number of standard penetration; strain;
- 【文献出处】 四川建筑科学研究 ,Sichuan Building Science , 编辑部邮箱 ,2010年05期
- 【分类号】TU472
- 【被引频次】5
- 【下载频次】105