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| 摘要: |
| 采用投影覆盖法结合激光三角测试技术，直接测定了混凝土断裂表面分维值。根据多重分形理论，分析了断裂表面的多重分形性质与材料组成的关系，同时给出了混凝土断裂表面多重分形的特点。结果表明，不同材料组成的混凝土断面分形谱形态基本,相同它们的分维值域随水胶比，集料粒径和集料品种的变化而变化。 |
| 关键词: 投影覆盖法 断裂表面 表面分维 多重分形 混凝土材料 |
| DOI： |
| 分类号:TU528.01 |
| 基金项目:高等学校博士学科点基金资助项目 (980 2 4 70 4 ) |
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| Study on the Multi-fractal Characterization of Fracture Surface of Concrete Materials |
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YAN An WU Ke ru ZHANG Dong YAO Wu
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| Abstract: |
| The fractal dimension of fracture surface was measured directly by using projective covering method and laser triangulation technique. Based on the theory of multi fractal, the relationship between multi fractal properties and material components was analyzed and multi fractal characterization of concrete materials was also presented. Preliminary results show that concretes with different composition have the similar multi fractal characterization of fracture surface and the range of fractal dimension varies with the factors including water binder ratio, aggregate size and aggregate type. |
| Key words: projective covering method,fracture surface,fractal dimension,multi fractal |
