| 水泥砂浆复合受力破坏准则的试验研究 |
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| 引用本文： | 王卓琳,顾祥林,林峰.水泥砂浆复合受力破坏准则的试验研究[J].建筑材料学报,2011,14(4). |
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| 作者姓名： | 王卓琳 顾祥林 林峰 |
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| 作者单位： | 同济大学建筑工程系,上海,200092 |
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| 基金项目： | 国家自然科学基金资助项目(50978191) |
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| 摘 要： | 参考常用的混凝土强度,设计了4种配合比水泥砂浆.采用拉拔测试仪(limpet pull-offtester)测得的水泥砂浆直接拉伸强度大约为其劈裂抗拉强度的60%.采用自行设计的水泥砂浆拉剪、压剪耦合受力装置,测量不同压应力水平下水泥砂浆的抗剪强度.结果表明,当压应力水平大于0.6倍水泥砂浆轴心抗压强度时,其抗剪强度会有不同程度下降.通过数据拟合获得了水泥砂浆复合受力状态下的破坏准则.该准则可以应用于细观力学模型中对混凝土材料破坏过程进行数值模拟;也可作为砌体结构中砂浆的破坏准则.
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| 关 键 词： | 水泥砂浆 破坏准则 压剪 拉剪 |
Experimental Study on Failure Criterion of Mortar under Combined Stresses |
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| WANG Zhuo-lin,GU Xiang-lin,LIN Feng.Experimental Study on Failure Criterion of Mortar under Combined Stresses[J].Journal of Building Materials,2011,14(4). |
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| Authors: | WANG Zhuo-lin GU Xiang-lin LIN Feng |
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| Affiliation: | WANG Zhuo-lin,GU Xiang-lin,LIN Feng(Department of Building Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | Four kinds of mortar with different water-cement ratio were designed according to a common range of concrete strength.Tensile strength of mortar was obtained using limpet pull-off tester,and it was about 0.6 times splitting tensile strength of the mortar.Shear strengths of mortar under different normal stresses were obtained using the loading equipments under combined stresses of compression/tension and shear designed.It is found that the shear strength decreases when the normal stress is larger than 0.6 ti... |
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| Keywords: | mortar failure criterion compression-shear tension-shear |
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