Paper Title:

Aggregate Shape Effect on Mesoscale Modeling of Concrete under High Strain Rate Tension

Periodical Advanced Materials Research (Volumes 243 - 249)
Main Theme Advances in Civil Engineering and Architecture
Edited by Chaohe Chen, Yong Huang and Guangfan Li
Pages 6127-6130
DOI 10.4028/www.scientific.net/AMR.243-249.6127
Citation Xiao Qing Zhou et al., 2011, Advanced Materials Research, 243-249, 6127
Online since May, 2011
Authors Xiao Qing Zhou, Yong Xia, Wen Huang
Keywords Concrete, High Strain Rate, Mesoscale, Split Hopkinson Pressure Bar (SHPB)
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Abstract

Concrete might be subjected to impact or blast loading. To analyze the concrete behaviors under such loading cases, it is of interest to study the dynamic damage and failure behavior of concrete under high strain rate. In the present paper, a mesoscale model is developed to numerically analyze the dynamic damage process of concrete samples under high strain rate tension. In the mesoscale model, the concrete is regarded as a three-phase composite consisting of coarse aggregate, mortar matrix, and interfacial transition zone (ITZ) between the aggregate and the mortar matrix. Different coarse aggregate shapes, such as circular, oval, and polygon, are calculated and compared. It is found that the shapes of the coarse aggregates do affect the tensile strength and failure pattern.