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| 圆环法研究再生微粉混凝土收缩性能 | |
| 引用本文： | 高志楼,刘小艳,左俊卿,窦兰权,王新瑞.圆环法研究再生微粉混凝土收缩性能[J].粉煤灰综合利用,2012(2):6-10. |
| 作者姓名： | 高志楼 刘小艳 左俊卿 窦兰权 王新瑞 |
| 作者单位： | 1. 中交一航局第一工程有限公司,天津,300456 2. 河海大学力学与材料学院,江苏南京,210098 3. 同济大学先进土木工程材料教育部重点实验室,上海,201804 4. 中冶天工上海十三冶建设有限公司城市建设分公司,上海,200901 |
| 基金项目： | 河海大学学生科技基金资助项目(K200805) |
| 摘 要： | 采用圆环试验方法研究了再生微粉掺合料对混凝土收缩开裂趋势的影响,并测定了再生微粉混凝土早期干燥收缩性能。试验结果表明,圆环试验能给混凝土提供了完全的、均匀的约束,能合理评价混凝土抵抗自收缩和干燥收缩综合作用开裂的能力。再生微粉掺合料能明显降低混凝土收缩开裂趋势及干燥收缩性能;且微粉细度越大,再生微粉混凝土抗收缩抗裂性能越好。试验结合SEM试验结果,分析了再生微粉掺合料减小水泥基材料收缩开裂趋势的原因。 |
| 关 键 词： | 再生微粉 混凝土 收缩 |
Study on Shrinkage Performance of Concrete Containing Re-production Powder using Ring Test |
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| Gso Zhi-lou , Liu Xiao-yan , Zuo Jun-qing , Dou Lan-quan , Wang Xin-rui.Study on Shrinkage Performance of Concrete Containing Re-production Powder using Ring Test[J].Fly Ash Comprehensive Utilization,2012(2):6-10. | |
| Authors: | Gso Zhi-lou Liu Xiao-yan Zuo Jun-qing Dou Lan-quan Wang Xin-rui |
| Affiliation: | 1.No.1 Engineering Company LTD.of CCCC First Harbor Engineering Company Limited,Tianjin,300456;2.College of Mechanics and Materials,Hohai University,Nanjing 210098;3.Key Laboratory of Advanced Civil Engineering Materials(Tongji University),Ministry of Education,Shanghai 201804;4.CMTCC SHANGHAI SHISANYE Construction Co.,Ltd.,Shanghai,China 200901) |
| Abstract: | In this paper,ring test was used to study the influence of re-production powder on shrinkage cracking trends of concrete,and test early-age drying shrinkage performance of re-production powder concrete.Results show that the ring test can reasonably assess anti-cracking property of concrete caused by autogenous shrinkage and drying shrinkage,providing concrete a complete and uniform bound.Re-production powder can significantly reduce the shrinkage cracking trends of concrete and the drying shrinkage performance.The finer the powder was,the better was the anti-cracking property of concrete was Combined with Scanning electron microscopy.(SEM) the test was used to analyse the reason of reducing the shrinkage cracking trends by re-production powder. |
| Keywords: | re-production powder concrete shrinkage performance |
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