Prediction of Carbonation Depth of Reinforced Concrete Beams Under Cyclic Flexural Loads

ZHU Linxuan; ZHANG Mingyi; CHEN Chaoran; ZHOU Zhijun; WANG Miaomiao

doi:10.13204/j.gyjzG21112513

Volume 52 Issue 11

Nov. 2022

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ZHU Linxuan, ZHANG Mingyi, CHEN Chaoran, ZHOU Zhijun, WANG Miaomiao. Prediction of Carbonation Depth of Reinforced Concrete Beams Under Cyclic Flexural Loads[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 139-143,212. doi: 10.13204/j.gyjzG21112513

Citation:

ZHU Linxuan, ZHANG Mingyi, CHEN Chaoran, ZHOU Zhijun, WANG Miaomiao. Prediction of Carbonation Depth of Reinforced Concrete Beams Under Cyclic Flexural Loads[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(11): 139-143,212. doi: 10.13204/j.gyjzG21112513

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Prediction of Carbonation Depth of Reinforced Concrete Beams Under Cyclic Flexural Loads

doi: 10.13204/j.gyjzG21112513

1. School of Highway, Chang'an University, Xi'an 710064, China;
2. Yunnan Science Research Institute of Communication Co., Ltd., Kunming 650011, China;
3. Gansu Province Transport Planning, Survey & Design Institute Co., Ltd., Lanzhou 730030, China

Received Date: 2021-11-25

Abstract

Abstract

In order to study deterioration laws of concrete under combined action of cyclic flexural loads and carbonation, the accelerated carbonation test for RC beams under cyclic flexural loads was conducted. Simultaneously, based on theoretical analysis and experiment results, a prediction model for carbonation depth was proposed, which could quantitatively analyze the influence of stress levels and loading cycles on carbonation depths of concrete. Finally, the model was verified by existing test results. The results showed that carbonation depths of concrete increased with increase of carbonation time, but the carbonation rate slowed down gradually; the higher the stress level and the more loading cycles, the more serious the fatigue damage of concrete, which would accelerate carbonation of concrete; the predicted values by the carbonation depth model were in good agreement with the experimental results, and the relative errors were less than 5%. The model could be used to predict the carbonation depth of concrete under repeated loading.
- concrete,
- cyclic flexural load,
- fatigue damage,
- carbonation model

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References(24)

References

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