degradation of dynamic elastic modulus of concrete under periodic temperature-humidity action

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ID: 240248
2020
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Abstract
Cracks caused by environmental temperature and humidity variation are generally considered one of the most important factors causing durability deterioration of concrete structures. The seasonal or daily variation of ambient temperature and humidity can be considered periodic. The dynamic modulus of elasticity is an important parameter used to evaluate the performance of structural concrete under periodic loads. Hence, in this paper, the dynamic elastic modulus test of concrete under simulating periodic temperature-humidity variation is carried out according to monthly meteorological data of representative areas (Nanjing, China). The dynamic elastic modulus attenuation pattern and a dynamic elastic modulus degradation model of concrete under periodic temperature-humidity are investigated. The test results show that the dynamic elastic modulus of concrete decreases and tends to be stable under the action of periodic temperature-humidity. Comparative analysis shows that the two-parameter dynamic elastic modulus degradation model is more suitable for describing the dynamic elastic modulus attenuation pattern of concrete under periodic temperature-humidity action than the single-parameter one.
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chen2020materialsdegradation Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Depeng Chen;Jiajia Zou;Liang Zhao;Shidai Xu;Tengfei Xiang;Chunlin Liu
Journal Nature Materials
Year 2020
DOI
10.3390/ma13030611
URL
https://www.mdpi.com/1996-1944/13/3/611
Keywords
fatigue damage electronics civil engineering (general)microscopydescriptive and experimental mechanics nuclear engineeringengineering (general)

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