Journal of South China University of Technology (Natural Science Edition) ›› 2014, Vol. 42 ›› Issue (6): 102-106.doi: 10.3969/j.issn.1000-565X.2014.06.016

• Architecture & Civil Engineering • Previous Articles     Next Articles

Carbonation Resistance of Concrete with Infiltration Coatings

Li Guo Wei Rong- rong Li Xiao- ling Zhang Jian- feng Lei Ming   

  1. Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering,China University of Mining and Technology,Xuzhou 221116,Jiangsu,China
  • Received:2013-10-23 Revised:2014-02-21 Online:2014-06-25 Published:2014-05-01
  • Contact: 李果(1973-)，男，博士后，副教授，主要从事钢筋混凝土耐久性研究． E-mail:guoli@cumt.edu.cn
  • About author:李果(1973-)，男，博士后，副教授，主要从事钢筋混凝土耐久性研究．
  • Supported by:

    国家自然科学基金面上项目(51178455);江苏省环境灾变与结构可靠性重点实验室开放基金资助项目(JSKL2012YB01)．

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Abstract:

In this paper,by taking a cement- based infiltration crystallization coating and a silane- based coating asresearch objects,the influences of water- to- cement ratio,concrete substrate’ s moisture condition and painting timeson the carbonation resistance of the concrete with infiltration coatings were investigated.The results show that (1)infiltration coatings help to improve the carbonation resistance of concrete to a certain degree,and the carbonationresistance of cement- based coatings is usually stronger than that of silane- based coatings; (2) moist concrete sub-strate is most favorable to the carbonation resistance of cement- based coatings,but it has little effect on that ofsilane-based coatings; (3) with the decrease of water- to- cement ratio,the improvement of carbonation resistance ofthe concrete with infiltration coatings degrades; and (4) more painting times benefits the carbonation resistance ofconcrete with silane- based coatings but has no obvious effect on that with cement- based coatings.

Key words: concrete, carbonation resistance, silane- based coating, cement- based coating

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