Long-term Behavior of Fiber Reinforced Concrete Exposed to Sulfate Solution Cycling in Drying-immersion
文献类型：CNKI期刊论文
| 作者 | Geng YJ(耿永娟); Jin ZQ(金祖权); HOU Baorong; ZHAO Tiejun; GAO Song |
| 发表日期 | 2017-08-15 |
| 出处 | Journal of Wuhan University of Technology(Materials Science)
 |
| 关键词 | fiber reinforced concrete sulfateion damage diffusion coefficient drying-immersion cycles |
| 英文摘要 | 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 thenarditeinduced 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. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Funded by the National Natural Science Foundation of China(Nos.51378269 and 5142010501) ; the Chinese National Basic Research Program of China(No.2015CB655100) ; the 111 Program |
| 卷 | v.32;No.138期:04页:133-139 |
| 语种 | 英文; |
| 分类号 | TU528.572 |
| ISSN号 | 1000-2413 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/189224]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.SchoolofCivilEngineering,QingdaoTechnologicalUniversity 2.InstituteofOceanology,TheChineseAcademyofScience |
| 推荐引用方式 GB/T 7714 | Geng YJ,Jin ZQ,HOU Baorong,et al. Long-term Behavior of Fiber Reinforced Concrete Exposed to Sulfate Solution Cycling in Drying-immersion. 2017. |
入库方式： OAI收割
来源：海洋研究所
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