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Long-term Behavior of Fiber Reinforced Concrete Exposed to Sulfate Solution Cycling in Drying-immersion
Geng Yongjuan1; Jin Zuquan1; Hou Baorong2; Zhao Tiejun1; Gao Song1
2017-08-01
发表期刊JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
卷号32期号:4页码:875-881
文章类型Article
摘要The damage process and corrosion ion distribution in concrete, which was exposed to 60 and 170 drying-immersion cycles of sulfate solution, were systematically investigated. The effects of plain concrete, plain concrete mixed with 4 and 8 kg/m(3) modified PP fiber and high-performance concrete (HPC) mixed with 0.8 kg/m(3) fine PP fiber on the damage process were also studied. The experimental results showed that thenardite-induced surface scaling, as well as gypsum-and ettringite-induced cracks, were the main degradation forms of concrete under attack of sulfate solution and drying-immersion cycles. The relative dynamic modulus of elasticity of concrete initially increased, then reached stability and finally decreased to failure. The sulfate diffusion coefficients of plain and HPC were 10(-12) and 10(-13) m(2)/s, respectively. The concentration of sodium ion increased with depth, then maintained stability and finally decreased rapidly with concrete depth. The content of calcium ion on the concrete surface was 110%-150% of that in the interior of specimens. Although fiber worsened the surface scaling of concrete, better resistance capacity of sulfate ion penetration into concrete was observed in plain concrete with 4 kg/m(3) modified PP fiber and HPC.
关键词Fiber Reinforced Concrete Sulfate Ion Damage Diffusion Coefficient Drying-immersion Cycles
DOI10.1007/s11595-017-1683-x
收录类别SCI
语种英语
WOS记录号WOS:000407684600022
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/143091
专题海洋腐蚀与防护研究发展中心
作者单位1.Qingdao Technol Univ, Sch Civil Engn, Qingdao 266033, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
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Geng Yongjuan,Jin Zuquan,Hou Baorong,et al. Long-term Behavior of Fiber Reinforced Concrete Exposed to Sulfate Solution Cycling in Drying-immersion[J]. JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,2017,32(4):875-881.
APA Geng Yongjuan,Jin Zuquan,Hou Baorong,Zhao Tiejun,&Gao Song.(2017).Long-term Behavior of Fiber Reinforced Concrete Exposed to Sulfate Solution Cycling in Drying-immersion.JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION,32(4),875-881.
MLA Geng Yongjuan,et al."Long-term Behavior of Fiber Reinforced Concrete Exposed to Sulfate Solution Cycling in Drying-immersion".JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION 32.4(2017):875-881.
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