Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action

Chen, Depeng; Zou, Jiajia; Zhao, Liang; Xu, Shidai; Xiang, Tengfei; Liu, Chunlin

doi:10.3390/ma13030611

Open AccessArticle

Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action

by

Depeng Chen

^1,2,3

,

Jiajia Zou

¹,

Liang Zhao

²,

Shidai Xu

¹,

Tengfei Xiang

^1,3

and

Chunlin Liu

^1,*

¹

School of Architectural and Civil Engineering, Anhui University of Technology, Ma’anshan 243032, China

²

School of Civil Engineering, Southeast University, Nanjing 210000, China

³

Institute of Green Building Materials, Anhui University of Technology, Ma’anshan 243032, China

^*

Author to whom correspondence should be addressed.

Materials 2020, 13(3), 611; https://doi.org/10.3390/ma13030611

Submission received: 24 December 2019 / Revised: 21 January 2020 / Accepted: 27 January 2020 / Published: 30 January 2020

(This article belongs to the Section Construction and Building Materials)

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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.

Keywords: periodic temperature-humidity action; dynamic elastic modulus of concrete; fatigue damage; degradation model of dynamic elastic modulus; curve fitting

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MDPI and ACS Style

Chen, D.; Zou, J.; Zhao, L.; Xu, S.; Xiang, T.; Liu, C. Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action. Materials 2020, 13, 611. https://doi.org/10.3390/ma13030611

AMA Style

Chen D, Zou J, Zhao L, Xu S, Xiang T, Liu C. Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action. Materials. 2020; 13(3):611. https://doi.org/10.3390/ma13030611

Chicago/Turabian Style

Chen, Depeng, Jiajia Zou, Liang Zhao, Shidai Xu, Tengfei Xiang, and Chunlin Liu. 2020. "Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action" Materials 13, no. 3: 611. https://doi.org/10.3390/ma13030611

APA Style

Chen, D., Zou, J., Zhao, L., Xu, S., Xiang, T., & Liu, C. (2020). Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action. Materials, 13(3), 611. https://doi.org/10.3390/ma13030611

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Degradation of Dynamic Elastic Modulus of Concrete under Periodic Temperature-Humidity Action

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