Dynamic Compressive Performance of Concrete Exposed to High Temperature Based on Microstructure Analysis

Abstract:

Combined with strain gauge measurement method, the modified split Hopkinson pressure bar was adopted to investigate the behavior of normal concrete and steel fiber reinforcement concrete exposed to 400°C and 800°C under axial impact compressive loading. The experimental results show that compared with normal temperature, the compressive strength and elasticity modulus of normal concrete exposed to 400°C and 800°C decrease obviously. The transformation of concrete exposed to high temperature in microstructure is analyzed by SEM. The influence of high temperature on macro mechanics performance is discussed.

• Periodical: Applied Mechanics and Materials (Volumes 357-360)
• Pages: 1389-1394
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.357-360.1389
• Online since: August 2013
• Authors: Shao Wei Yang, Zhi Guo Liu, Yong Wei Wang, Zi Rui Liu, Heng Jing Ba
• Keywords: Dynamic Compressive Performance, SFRC, SHPB

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