Please wait a minute...
浙江大学学报(工学版)
J4  2011, Vol. 45 Issue (8): 1416-1422    DOI: 10.3785/j.issn.1008-973X.2011.08.015
土木工程     
养护条件与暴露环境对氯离子传输的耦合作用
薛文1, 金伟良1, 横田弘2
1.浙江大学 土木工程学院,浙江 杭州310058；2.日本北海道大学 建筑环境学系,札幌,日本 0608628
Chloride penetrating under co-effects of initial curing and
exposure conditions
XUE Wen1, JIN Wei-liang1, YOKOTA Hiroshi2
1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. Division of Built Environment, Hokkaido University, Sapporo, 0608628 Japan
 全文: PDF  HTML
摘要：

为研究早期养护条件和后期暴露环境作用对混凝土抗氯离子扩散性能的耦合作用效应,选取不同的早期养护条件和海洋暴露环境对混凝土试件进行暴露试验.设定5种环境干湿状况及养护龄期用以模拟施工中出现的不同养护条件,并选取具备不同干湿循环比例的海洋环境对混凝土试件进行6个月的暴露.暴露结束后,通过酸溶法氯离子浓度分布测定及稳态电迁移试验讨论氯离子在混凝土中的传输特性影响.同时还对氯离子在非饱和混凝土中的传输进行数值模拟研究.结果表明,早期的不充分养护和后期的干湿交替环境使得混凝土浅表层的毛细吸附行为和氯离子在浅表层的富集变得十分显著.服役环境的供水能力强,则氯离子在混凝土内部的扩散效应显著；反之,氯离子的扩散效应被弱化.因此提出,在海洋环境中服役的钢筋混凝土结构进行耐久性设计时,必须重视并且考虑早期养护条件和后期暴露环境的干湿循环比例的耦合作用.
Abstract:

The co-effects of initial curing conditions and the following exposure environments were discussed in this study. Concrete cylinders were cured in five conditions characterized with different humidity and curing duration and were moved into three kinds of marine environments for half a year’s exposure. The apparent diffusion coefficient and the effective diffusion coefficient of the chloride ions were obtained. The chloride transportation model in unstructured concrete was adopted to simulate the testing. The results indicate that inadequate water curing in the very beginning few days and the environmental wettingdrying cycles have a marked negative influence on chloride capillary suction and accumulation in the skin concrete. With the increasing of environmental wetting-drying ratio, diffusion dominates the moving of chloride ions in core concrete. Conventionally, by the decreasing of wetting-drying ratio, diffusion effect fakes out. Based on the results, the co-effect of initial curing conditions and the wet-dry interval ratios of the environments is suggested to be concerned during the durability design of the concrete.
出版日期: 2011-09-08
:  TU 411  
基金资助:

国家自然科学基金重点资助项目(50538070)；国家自然科学基金重大国际合作资助项目(50920105806)；国家自然科学基金中日合作资助项目(50811130215).
通讯作者: 金伟良，男，教授.     E-mail: jinwl@zju.edu.cn
作者简介: 薛文(1983—)，女，博士生，从事混凝土结构耐久性方面研究.E-mail: xuewen@zju.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
作者相关文章　　

引用本文:

薛文, 金伟良, 横田弘. 养护条件与暴露环境对氯离子传输的耦合作用[J]. J4, 2011, 45(8): 1416-1422.

XUE Wen, JIN Wei-liang, YOKOTA Hiroshi. Chloride penetrating under co-effects of initial curing and
exposure conditions. J4, 2011, 45(8): 1416-1422.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.08.015    或    https://www.zjujournals.com/eng/CN/Y2011/V45/I8/1416

［1］ ATIS C D, OZCAN F. Influence of dry and wet curing conditions on compressive strength of silica fume concrete ［J］. Building and Environment, 2005, 40(12): 1678-1683.
［2］ SHAFIQ N, CABRERA J G. Effects of initial curing condition on the fluid transport properties in OPC and fly ash blended cement concrete ［J］. Cement and Concrete Composites, 2004, 26(4): 381-387.
［3］ RAMEZANIANPOUR A A. Effect of curing on the compressive strength, resistance to chlorideion penetration and porosity of concretes incorporating slag, fly ash or silica fume ［J］. Cement and Concrete Composites, 1995, 17(2): 125-133.
［4］ KHATIB J M, MANGAT P S. Influence of super plasticizer and curing on porosity and pore structure of cement paste ［J］. Cement and Concrete Composites, 1999, 21(5/6): 431-437.
［5］ JAEGERMANN C. Effect of watercement ratio and curing on chloride penetration into concrete exposed to mediterranean sea climate ［J］. ACI Materials, 1990, 84(4): 333-339.
［6］ TOMOSAWA F. Japan’s experiences and standards on the durability problems of reinforced concrete structures ［J］. International Journal of Structural Engineering, 2009, 1(1):1-12.
［7］ MCCARTER W J, WATSON D W, CHRISP T M. Surface zone concrete: Drying, absorption, and moisture distribution ［J］. Journal of Materials in Civil Engineering, 2001, 13(1): 49-57.
［8］金伟良, 赵羽习.混凝土结构耐久性研究的回顾与展望［J］.浙江大学学报:工学版,2002,36(4): 371-380.
JIN Weiliang, ZHAO Yuxi. Stateoftheart on durability of concrete structures ［J］. Journal of Zhejiang University: Engineering Science, 2002, 36(4): 371-380.
［9］ SONG H W, ANN K Y, PACK S W, et al. Factors influencing chloride transport and chloride threshold level for the prediction of service life of concrete structures ［J］. International Journal of Structural Engineering, 2010, 1(2): 131-144.
［10］ NILSON H, DARWIN D, DOLAN C. Design of concrete structures \
[M\]. Dubuque, USA: McGraw Hill Higher Education, 2003.
［11］ CHAUBE R P, SHIMOMURA T, MAEKAWA K. Multiphase water movement in concrete as a multicomponent system ［C］ ∥ Proceedings of the 5th RILEM International Symposium on Creep and Shrinkage in Concrete. Barcelona: RILEM Publications, 1993, 139-144.
［12］ CORLESS R M, GONNET G. H. On the lambert W function ［J］. Advances in Computational Mathematics, 1996, 5: 329-359.
［13］ 金伟良,张奕,卢振勇.非饱和状态下氯离子在混凝土中的渗透机理以及模型计算［J］.硅酸盐学报,2008,36(10): 1362-1369.
JIN Weiliang, ZHANG Yi, LU Zhenyong. Mechanism and mathematic modeling of chloride permeation in concrete under unsaturated state ［J］. Journal of the Chinese Ceramic Society, 2008, 36(10): 1362-1369.
[1] 刘长殿, 孙红月, 康剑伟, 杜丽丽. 土体的充气阻渗试验[J]. J4, 2014, 48(2): 236-241.
[2] 柯瀚,王文芳,魏长春,陈云敏,詹良通. 填埋体饱和渗透系数影响因素室内研究[J]. J4, 2013, 47(7): 1164-1170.
[3] 余钊圣, 王宇, 邵雪明, 吴腾虎. 中性悬浮大颗粒对湍槽流影响的数值研究[J]. J4, 2013, 47(1): 109-115.
[4] 王林涛,龚国芳,施虎,刘怀印. 基于盾构密封舱压力直接反馈地表变形控制[J]. J4, 2012, 46(7): 1182-1188.
[5] 刘永莉,孙红月,于洋,詹伟,尚岳全. 基于BOTDR监测技术抗滑桩上滑坡推力确定[J]. J4, 2012, 46(5): 798-803.
[6] 林巍, 楼文娟, 申屠团兵, 黄铭枫. 高层建筑脉动风压的非高斯峰值因子方法[J]. J4, 2012, 46(4): 691-697.
[7] 刘永莉, 孙红月, 于洋, 詹伟， 尚岳全. 抗滑桩内力的BOTDR监测分析[J]. J4, 2012, 46(2): 243-249.
[8] 徐日庆,张俊,朱剑锋, 王兴陈. 考虑扰动影响的修正Duncan-Chang模型[J]. J4, 2012, 46(1): 1-7.
[9] 周建, 郑鸿镔, 温晓贵, 管林波, 邓以亮. 考虑中主应力系数影响的主应力轴旋转下
原状软黏土变形研究[J]. J4, 2011, 45(12): 2134-2141.
[10] 陈贵锋,马晓薇,吴建海,马巧云,薛晶晶,郝秋艳. 快速热处理对高能粒子辐照硅中氧沉淀的影响[J]. J4, 2011, 45(5): 928-933.
[11] 陈国红, 谢康和, 程永峰, 徐妍. 考虑涂抹区渗透系数变化的砂井地基固结解[J]. J4, 2011, 45(4): 665-670.
[12] 王艳, 李海峰, 徐熙平. 双灯投影机方棒照明系统的设计[J]. J4, 2011, 45(2): 382-386.
[13] 施虎,龚国芳,杨华勇,汪慧. 盾构掘进机推进力计算模型[J]. J4, 2011, 45(1): 126-131.
[14] 苏锋, 蒋晔, 蔡永昌. 钢管混凝土梁柱节点受力性能有限元分析[J]. J4, 2010, 44(10): 1876-1882.
[15] 朱道建. 柱状节理岩体开挖卸荷效应及破裂区分布规律[J]. J4, 2010, 44(10): 1967-1973.