| 基于CT图像的混凝土受拉破损机理分析 |
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| 引用本文： | 徐超,彭刚.基于CT图像的混凝土受拉破损机理分析[J].人民黄河,2011,33(9). |
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| 作者姓名： | 徐超 彭刚 |
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| 作者单位： | 三峡大学土木与建筑学院,湖北宜昌,443002 |
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| 摘 要： | 通过混凝土在单轴拉伸荷载作用下的X射线CT试验,研究了混凝土受拉破损的机理.结果表明:CT差值图像可以有效识别裂纹；混凝土试件从初始裂纹出现到试件被破坏发展十分迅速；混凝土受拉破坏可以分为初始裂纹、孔洞的压密阶段,微裂纹的萌生和稳定发展阶段,裂纹贯通、宏观裂纹的出现及试件的破坏阶段.
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| 关 键 词： | 混凝土 CT图像 微裂纹 差值图 |
Analysis on Damage and Fracture Mechanism of Concrete Based on CT Image Under Tensile Condition |
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| XU Chao
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PENG Gang.Analysis on Damage and Fracture Mechanism of Concrete Based on CT Image Under Tensile Condition[J].Yellow River,2011,33(9). |
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| Authors: | XU Chao PENG Gang |
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| Affiliation: | XU Chao,PENG Gang (College of Civil & Architecture,China Three Gorges University,Yichang 443002,China) |
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| Abstract: | The experiment of concrete under uniaxial tensile condition is carried out by means of X-ray computed tomography technology.Damage and fracture mechanism of concrete under tensile condition is analyzed.The result shows that the minus image value is an effective method to identify crack.The process of concrete specimen from appearance of initial cracks to damage is very rapid.The tensile fracture processes of concrete can be divided into three stages of compaction of initial cracks and holes,formation and st... |
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| Keywords: | concrete computed tomography image micro-crack minus image value |
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