| 拉会大桥高性能硅粉混凝土试验研究 |
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| 引用本文： | 莫志凡,林春姣,傅根根,唐双美,郭磊磊. 拉会大桥高性能硅粉混凝土试验研究[J]. 混凝土, 2012, 0(7): 71-73 |
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| 作者姓名： | 莫志凡 林春姣 傅根根 唐双美 郭磊磊 |
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| 作者单位： | 广西路桥建设有限公司;广西大学土木建筑工程学院 |
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| 基金项目： | 广西交通科技项目(2010年第9号) |
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| 摘 要： | 对拉会大桥预应力混凝土连续刚构桥采用的C50高性能硅粉混凝土进行了试验研究,主要研究硅粉掺量对C50高性能混凝土的工作和易性、抗氯离子渗透和抗碳化的影响。试验结果表明:掺入适量硅粉有助于提高高性能混凝土和易性,同时对改善混凝土抗氯离子渗透和抗碳化等耐久性有显著作用。根据试验确定拉会大桥C50高性能混凝土硅粉掺量为5.66%,据此制备的混凝土各方面性能较优,能满足规范和设计要求。
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| 关 键 词： | 拉会大桥 高性能混凝土 硅粉 耐久性 氯离子渗透性能 碳化 |
Experimental research on high-performance silica fume concrete used on the lahui bridge |
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| MO Zhi-fan,LIN Chun-jiao,FU Gen-gen,TANG Shuang-mei,GUO Lei-lei. Experimental research on high-performance silica fume concrete used on the lahui bridge[J]. Concrete, 2012, 0(7): 71-73 |
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| Authors: | MO Zhi-fan LIN Chun-jiao FU Gen-gen TANG Shuang-mei GUO Lei-lei |
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| Affiliation: | 1.Guangxi Road and Bridge Construction Co.,Ltd.,Nanning 530001,China; 2.College of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China) |
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| Abstract: | The C50 high-performance silica fume concrete which would be used on the Lahui Bridge,a pre-stressed concrete continuous rigid frame bridges,was tested.The effects of silica fume content on the workability,resistance to chloride ion permeability and carbonation of the C50 high-performance concrete were studied.The test results indicated that adding appropriate amount silica fume was helpful to improve the workability of high-performance concrete;the resistance to chloride ion permeability and the carbonation resistance durability.According to the test,the C50 high-performance concrete with silica fume content of 5.66% would be used on the Lahui Bridge,and it could meet the requirements of the specification and design requirements with its good performance. |
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| Keywords: | lahui bridge high-performance concrete silica fume durability resistance to the penetration of chloride ions carbonation |
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