The transport properties of concrete under the simultaneous coupling of fatigue load and environment factors |
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| Authors: | Caihui Wang Wei Sun Jinyang Jing Jiande Han Hui Rong |
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| Affiliation: | 1, 2*, JING Jinyang1, 2, HAN Jiande1, 2, RONG Hui1, 2 (1. School of Materials Science and Engineering, Southeast University, Nanjing 211189, China; 2. Jiangsu Key Laboratory of Construction Materials, Nanjing 211189, China) |
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| Abstract: | A set of coupling experimental instrument was designed to study the transport properties of chloride ion in concrete under
simultaneous coupling action of fatigue load and environmental factors. Firstly the water-saturated performance of modern
concrete was investigated, then diffusion performance of chloride ion under different stress levels and different temperature
were studied respectively; meanwhile, the time-dependent behavior of the chloride ion diffusion in concrete was also researched.
The results showed that the saturation degree of concrete can reach as high as 99%. Besides, diffusion coefficient of chloride
ion increased with increasing of the stress level and temperature, and when the stress level and temperature are at 0.6 and
60 ° respectively, the diffusion coefficient is 6.3×10−14 m2/s, moreover the diffusion coefficient of chloride ion in concrete decreased with time under the simultaneous coupling action
of fatigue load and environment factors. |
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| Keywords: | chloride diffusion fatigue load concrete stress level temperature time dependent |
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