A review on the deposition and transport behavior of chloride ions in concrete in marine atmosphere
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TU528.33

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    Abstract:

    The erosion behavior of reinforced concrete by chloride ions in ocean atmosphere can be divided into two phases.At first, chloride ions attach to the surface of concrete under the action of wind, and then erode from the surface into the concrete.Based on the whole process of chloride ions erode on concrete in marine atmosphere, this article has summarized existing research both at domestic and abroad.On the one hand, this essay expounds the various influencing factors on the influence of deposition process, The salinity of seawater, wind speed and exposure time were positively correlated with the amount of chloride ion deposition in concrete, while the distance from the coast was negatively correlated with the amount of chloride ion deposition in concrete.On the other hand, discussing the influence of transfer process from the various influencing factors.The influence law of various influencing factors on the transmission process is discussed.The higher the water-cement ratio is, the longer the exposure time is, the higher the temperature is, the larger the internal and external humidity gradient is, and the more serious the carbonization is, the easier to form the convection zone.At present, the researches which aim at the deposition and transport behavior of chloride ions in marine atmosphere are based on single factor.The deposition and transport behaviors under the coupling of multiple factors need to be further studied.

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胡劲哲,牛建刚,孙丛涛,李言涛,鲍麒.海洋大气区氯离子在混凝土中的沉积与传输行为研究综述[J].土木与环境工程学报(中英文),2020,42(2):165~178

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History
  • Received:July 31,2019
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  • Online: April 28,2020
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