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中国腐蚀与防护学报  2018, Vol. 38 Issue (4): 309-316    DOI: 10.11902/1005.4537.2017.139
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混凝土裂缝形态参数对Cl-传输性能影响的研究进展
田雪凯1,2, 王海龙2(), 程旭东1(), 孙晓燕2
1 中国石油大学 (华东) 储运与建筑工程学院 青岛 266580
2 浙江大学建筑工程学院 杭州 310058
Effect of Crack Characteristics on Chloride Transport in Concrete: An Overview
Xuekai TIAN1,2, Hailong WANG2(), Xudong CHENG1(), Xiaoyan SUN2
1 College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, China
2 College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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摘要: 

介绍了常用的裂缝诱导方法,指出不同诱导方法的特点。总结了开裂混凝土中Cl-传输的实验研究结果,特别是裂缝形态参数对开裂混凝土中Cl-扩散的影响;并归纳了开裂混凝土中Cl-传输研究的理论和数值模型。最后对裂缝中Cl-的传输机理与性质研究进行了展望。

关键词 混凝土裂缝形态参数Cl-传输    
Abstract

Chloride ingression is a major cause of the durability deterioration of reinforced concrete structures in marine environments or exposed to deicing salt. The inevitable cracks in real structure have a significant influence on the transport of chloride ions. The present available methods for artificially inducing concrete cracks in concrete structural parts were introduced, while the relevant advantages and disadvantages of these methods were demonstrated in this paper. On basis of the overview of experimental studies on the chloride ion diffusion in cracked concrete, the geometrical parameters of concrete cracks and their influence on chloride penetration were analyzed, the theory and numerical models of chloride ion transport in cracked concrete were summarized, and some recommendations for further research were given.

Key wordsconcrete    crack geometrical parameter    chloride transport
收稿日期: 2017-08-23     
ZTFLH:  TU528.1  
基金资助:国家自然科学基金 (51579220和51378456) 及浙江省自然科学基金 (LY16E080004)
作者简介:

作者简介 田雪凯,男,1992年生,硕士生

引用本文:

田雪凯, 王海龙, 程旭东, 孙晓燕. 混凝土裂缝形态参数对Cl-传输性能影响的研究进展[J]. 中国腐蚀与防护学报, 2018, 38(4): 309-316.
Xuekai TIAN, Hailong WANG, Xudong CHENG, Xiaoyan SUN. Effect of Crack Characteristics on Chloride Transport in Concrete: An Overview. Journal of Chinese Society for Corrosion and protection, 2018, 38(4): 309-316.

链接本文:

https://www.jcscp.org/CN/10.11902/1005.4537.2017.139      或      https://www.jcscp.org/CN/Y2018/V38/I4/309

图1  4种机械加载法示意图[19,21,27,28]
Method for inducing cracks Method for Cl- transport testing w1 / μm w2 / μm Reference
Splitting method RCPT 200 --- [4]
Expansive core method Diffusion cell 50/30 200 [26,27]
Splitting method Steady migration test 30 80 [17]
Wedge splitting method Non-steady migration test / Diffusion cell 12/50 --- [33]
Flat-restraint shrinkage crack Diffusion cell 100 --- [9]
Splitting method Steady migration test --- 80 [19]
Notch method Non-steady migration test 50 100 [34]
Axial compression test Non-steady migration test 100 400 [35]
表1  w对Cl-扩散性能的影响
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