| 摘要: |
| 为了评价再生骨料表面砂浆的强度及附着率对再生混凝土性能的影响，以再生骨料表面不同的砂浆强度及附着率为变量，配制了不同强度等级的再生骨料混凝土，通过对比性强度试验和碳化试验评价了再生混凝土内部存在的2个界面过渡区与混凝土性能的关系.结果表明：以高强度原生混凝土为再生骨料配制相对较低强度等级的再生骨料混凝土时，其强度与普通混凝土几乎相同，再生骨料表面砂浆的强度及附着率对再生骨料混凝土强度影响不大，但碳化深度有所增大；以相对较低强度原生混凝土为再生骨料配制同强度等级以上的再生骨料混凝土时，其强度与普通混凝土相差较大，再生骨料表面砂浆的强度及附着率对再生混凝土强度影响较大，碳化深度也相应增大. |
| 关键词: 再生骨料混凝土 砂浆附着率 砂浆强度 界面过渡区 |
| DOI：10.3969/j.issn.1007 9629.2012.02.023 |
| 分类号: |
| 基金项目:辽宁省教育厅资助项目（2008282）;博士后基金资助项目（2008A002） |
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| Influence of Recycled Aggregate on Strength and Anti carbonationProperties of Recycled Aggregate Concrete |
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CUI Zheng long1, LU Sha sha1, WANG Zhen shuang2
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1.College of Civil and Architectural Engineering, Liaoning Technical University, Fuxin 123000, China;2.Institute of Building Materials, Dalian University of Technology, Dalian 116024, China
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| Abstract: |
| Influence of surface mortar strength and adhesive rate around coarse aggregate on recycled aggregate concrete(RAC) were investigated. Concrete of different strength were prepared with recycled aggregate of different surface mortar strength and adhesive rate to investigate their properties. It has been shown that, for low strength recycled aggregate concrete with higher strength ordinary concrete, the strength of recycled aggregate concrete and ordinary concrete are nearly the same, and the effect of surface mortar strength and adhesive rate around coarse aggregate on recycled aggregate concrete is low, while the carbonization depth of recycled aggregate concrete is higher than that of ordinary concrete; on the other hand, for recycled aggregate concrete prepared by low strength ordinary concrete, there are great differences between recycled aggregate concrete and ordinary concrete, the effect of surface mortar strength and adhesive rate around coarse aggregate on recycled aggregate concrete is significant and carbonization depth is increasing. |
| Key words: recycled aggregate concrete mortar adhesive rate mortar strength interfacial transition zone |
