| 粗糙度对新老混凝土粘结性能的影响 |
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| 引用本文： | 韩菊红,毕苏萍,张启明,徐伟. 粗糙度对新老混凝土粘结性能的影响[J]. 郑州大学学报(工学版), 2001, 22(3): 22-24 |
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| 作者姓名： | 韩菊红 毕苏萍 张启明 徐伟 |
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| 作者单位： | 郑州大学环境与水利学院, |
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| 基金项目： | 国家攀登计划B资助项目(课题编号:5.2);国家自然科学基金资助项目(59778045) |
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| 摘 要： | 结合国内外对新老混凝土界面粗糙度的处理及评定方法,进行了5组20个不同界面粗糙度的新老混凝土粘结界面三点弯曲缺口梁断裂试验,试验结果表明,粗糙度对新老混凝土粘结性能有明显的影响.当粗糙度大小用灌砂平均深度表征时,在灌砂平均深度1.0mm～11mm范围内,新老混凝土的粘结断裂韧度随灌砂平均深度的增大而线性提高,最后对混凝土加固补强实际工程中的界面粗糙度处理方法提出了建议.
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| 关 键 词： | 新老混凝土 粘结 粗糙度 |
| 文章编号： | 1007-6492(2001)03-0022-03 |
| 修稿时间： | 2001-05-25 |
Influence of the Roughness on the Bonding Properties of New and Old Concrete |
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| HAN Ju-hong,BI Su-ping,ZHANG Qi-ming,XU Wei. Influence of the Roughness on the Bonding Properties of New and Old Concrete[J]. Journal of Zhengzhou University: Eng Sci, 2001, 22(3): 22-24 |
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| Authors: | HAN Ju-hong BI Su-ping ZHANG Qi-ming XU Wei |
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| Abstract: | Combined with the abroad and domestic treating methods for the interfacial roughness of new and old concrete, the interfacial roughness of new to old concrete beams with three points supported is tested. The results show that interfacial roughness can obviously influence the interfacial fracture toughness of new to old concrete. And the proposed method for the practical engineering is put forward |
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| Keywords: | new and old concrete bonding interfacial roughness |
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