Mesoscopic characteristics and spatiotemporal variability of chloride transport in concrete

Chen, Dingshi; Guo, Wenhua; Wu, Biao; Ye, Tongjie

doi:10.1016/j.conbuildmat.2024.135081

Cited by 3 publications

(1 citation statement)

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“…Correspondingly, the increase in relative humidity inside the concrete will affect the transport speed of ions or molecules rate, which has a certain effect on the temperature. Equation ( 5) introduces the empirical formula of chloride ion transport considering the coupled effect of temperature and humidity, while 10 mm was set as a boundary condition [37].…”

Section: Theoretical Modelsmentioning

confidence: 99%

Experimental and Numerical Study on Chloride Transport in Unsaturated Concrete: Highlighting Temperature, Humidity, and Mineral Admixtures

Du,

Jin,

et al. 2024

Materials

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Chloride transport within concrete is critical for the durability of reinforced concrete structures; however, its diffusion under the coupling action of temperature and humidity has not been fully comprehended. Therefore, in this work, the coupling effects of temperature, relative humidity, and mineral admixtures on chloride transport in concrete were investigated through experimental and numerical simulation work. The results show that the chloride diffusion coefficient decreases with the decreased temperature and growth of relative humidity; however, the chloride concentration on the concrete surface is increased with the growth of temperature and relative humidity. Moreover, compounding about 15% fly ash (FA) and 30% granulated ground blast furnace slag (GGBS) to replace the cement is the most beneficial for improving the antichloride capacity of concrete, considering also the strength. In addition, the numerical simulation considering the coupled effect of temperature and relative humidity of chloride transport in concrete has good agreement with that of experimental results.

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Section: Theoretical Modelsmentioning

confidence: 99%