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

Authors :
Shao Wei Yang
Heng Jing Ba
Zi Rui Liu
Yong Wei Wang
Zhi Guo Liu
Source :
Applied Mechanics and Materials. :1389-1394
Publication Year :
2013
Publisher :
Trans Tech Publications, Ltd., 2013.

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.

Details

ISSN :
16627482
Database :
OpenAIRE
Journal :
Applied Mechanics and Materials
Accession number :
edsair.doi...........2b8dca1188206e7dd62171ce95a12db4