| 受酸腐蚀混凝土的剪切性能及声发射特征研究 |
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| 引用本文： | 张力伟,赵颖华,江阿兰,倪庆清.受酸腐蚀混凝土的剪切性能及声发射特征研究[J].建筑材料学报,2011,14(3):385-388,405. |
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| 作者姓名： | 张力伟 赵颖华 江阿兰 倪庆清 |
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| 作者单位： | 1. 大连海事大学道路与桥梁工程研究所,辽宁大连,116026
2. 信州大学机能机械学科,长野上田386-8567 |
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| 基金项目： | 中国博士后科学基金资助项目(20080431133) |
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| 摘 要： | 用pH值为1.5的硫酸和硝酸混合溶液对Z型混凝土试件进行侵蚀,对腐蚀后试件进行加载并全程进行声发射信号采集.结合应力-应变曲线与声发射参数对腐蚀前后混凝土剪切性能进行分析.结果表明:随着腐蚀周期增加,试件剪切强度和声发射参数均有明显降低,且声发射参数衰减率远大于剪切强度衰减率；未腐蚀试件加载过程声发射参数呈3阶段特征,...
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| 关 键 词： | 混凝土 腐蚀 剪切 应力-应变曲线 声发射 |
A Study on Shear Behavior and AE Characteristic of Concrete Corroded by Acidic Solution |
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| ZHANG Li-wei,ZHAO Ying-hua,JIANGA-lan,NI Qing-qing.A Study on Shear Behavior and AE Characteristic of Concrete Corroded by Acidic Solution[J].Journal of Building Materials,2011,14(3):385-388,405. |
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| Authors: | ZHANG Li-wei ZHAO Ying-hua JIANGA-lan NI Qing-qing |
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| Affiliation: | ZHANG Li-wei~1,ZHAO Ying-hua~1,JIANG A-lan~1,NI Qing-qing~2 (1.Institute of Road and Bridge Engineering,Dalian Maritime University,Dalian 116026,China,2.Department of Functional Machinery & Mechanics,Shinshu University,Ueda 386-8567,Japan) |
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| Abstract: | Z shape concrete specimens for shear test were immersed in mixed solution of vitriol and nitric acid with pH value of 1.5 to accelerate the corrosion.Acoustic emission(AE) parameters and stress-strain curves were recorded during the shear process,and the variation tendency of shear properties was analyzed. Results show that the shear strength and AE both decrease gradually with the corrosion time,and the decrement of AE is greater than that of shear strength.AE parameters of un-corroded specimens during loa... |
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| Keywords: | concrete corrosion shear stress-strain curve acoustic emission |
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