| 摘要: |
| 利用数字图像处理技术，对再生混凝土弯折试件的疲劳破坏断裂面进行了统计研究，得到了其统计特征，分析了再生混凝土疲劳应力水平与骨料脱黏面积比例的相互关系.对骨料与砂浆的边界进行提取，建立了能够真实反映再生混凝土粗骨料分布的二维细观数值模型，为分析再生混凝土的性能提供了重要依据. |
| 关键词: 再生混凝土 数字图像处理 脱黏面积 细观模型 |
| DOI：103969/j.issn1007 9629201403016 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51325802，51178340） |
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| Application of Digital Image Technique in Behavior Analysis ofRecycled Aggregate Concrete |
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XIAO Jianzhuang, LI Hong, YUAN Junqiang
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Department of Building Engineering, Tongji University, Shanghai 200092, China
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| Abstract: |
| Using the digital image processing technique, a statistical research was undertaken on the cross section of the specimen of recycled aggregate concrete after fatigue failure. The statistical characteristics of the fracture surface and the relationship between the debonding area ratio of the aggregate and the fatigue stress level was established and analyzed. A two dimensional numerical model that can reflect the distribution of recycled coarse aggregate was built, which provides the important base for the analysis of the behavior of recycled aggregate concrete. |
| Key words: recycled aggregate concrete（RAC） digital image processing debonding area mesoscopic model |
