A DIC-Based Study on Compressive Responses of Concrete after Exposure to Elevated Temperatures
School of Urban Construction, Yangtze University, Jingzhou 434023, China
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Materials 2019, 12(13), 2044; https://doi.org/10.3390/ma12132044
Received: 30 May 2019
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Revised: 20 June 2019
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Accepted: 23 June 2019
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Published: 26 June 2019
(This article belongs to the Collection Concrete and Construction Materials)
This paper provides an experimental investigation on the cracking process and residual mechanical properties of concrete after exposure to elevated temperatures. A total of 36 standard concrete prism specimens were tested after exposure to high temperatures of up to 600 °C. The failure modes, cracking process, residual mechanical properties, deformation characteristics and the strain distribution on the surface during the loading procedure were presented. The influences of exposure temperature and water–cement ratio (w/c) were interpreted. The digital image correlation (DIC) method was applied to quantitatively and visually characterize the development of cracking and relative displacement on the concrete surface. The findings suggest that the residual compressive strength and elastic modulus of the concrete decreases gradually with the increasing temperature, especially in the specimens with lower w/c ratio. The DIC technique provides an effective means to measure very precise and detailed information, including the crack opening and distribution of strain on the concrete surface.
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Keywords:
digital image correlation; full-field; elevated temperature; concrete
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MDPI and ACS Style
Xiang, S.; Zeng, L.; Zhang, J.; Chen, J.; Liu, Y.; Cheng, G.; Mo, J. A DIC-Based Study on Compressive Responses of Concrete after Exposure to Elevated Temperatures. Materials 2019, 12, 2044. https://doi.org/10.3390/ma12132044
AMA Style
Xiang S, Zeng L, Zhang J, Chen J, Liu Y, Cheng G, Mo J. A DIC-Based Study on Compressive Responses of Concrete after Exposure to Elevated Temperatures. Materials. 2019; 12(13):2044. https://doi.org/10.3390/ma12132044
Chicago/Turabian StyleXiang, Sheng, Lei Zeng, Jicheng Zhang, Juan Chen, Yanhua Liu, Guoyuan Cheng, and Jinxu Mo. 2019. "A DIC-Based Study on Compressive Responses of Concrete after Exposure to Elevated Temperatures" Materials 12, no. 13: 2044. https://doi.org/10.3390/ma12132044
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