TY - GEN
T1 - Random aggregate generation and mesoscale modeling of concrete under high strain rate compression
AU - Zhou, Xiao Qing
AU - Xia, Yong
PY - 2011/11/1
Y1 - 2011/11/1
N2 - In the mesoscale modeling, concrete is assumed consisting of three components, i.e., coarse aggregates, mortar matrix, and the interfacial transition zone (ITZ), each with different material behavior. The shape and the percentage of the coarse aggregate are the key factors in the mesoscale numerical simulation. The present paper investigates the effect of the coarse aggregate shape on the concrete behavior under high strain rate compression. Simplified methods are adopted to construct the aggregate distribution. Three different aggregate shapes, i.e., circular, oval and polygons, are generated to model the gravel and crushed stone aggregates, respectively. Using these different aggregate shapes, concrete specimens under high strain rate compression are modeled. Numerical results show that the aggregate shapes have a significant effect on the crack path, whereas little effect on the overall responses of the concrete specimen.
AB - In the mesoscale modeling, concrete is assumed consisting of three components, i.e., coarse aggregates, mortar matrix, and the interfacial transition zone (ITZ), each with different material behavior. The shape and the percentage of the coarse aggregate are the key factors in the mesoscale numerical simulation. The present paper investigates the effect of the coarse aggregate shape on the concrete behavior under high strain rate compression. Simplified methods are adopted to construct the aggregate distribution. Three different aggregate shapes, i.e., circular, oval and polygons, are generated to model the gravel and crushed stone aggregates, respectively. Using these different aggregate shapes, concrete specimens under high strain rate compression are modeled. Numerical results show that the aggregate shapes have a significant effect on the crack path, whereas little effect on the overall responses of the concrete specimen.
KW - Aggregate
KW - Concrete
KW - Interfacial transition zone
KW - Mesoscale
KW - Numerical simulation
UR - http://www.scopus.com/inward/record.url?scp=80055021237&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMM.71-78.733
DO - 10.4028/www.scientific.net/AMM.71-78.733
M3 - Conference article published in proceeding or book
SN - 9783037852033
T3 - Applied Mechanics and Materials
SP - 733
EP - 736
BT - Frontiers of Green Building, Materials and Civil Engineering
T2 - 2011 International Conference on Green Building, Materials and Civil Engineering, GBMCE 2011
Y2 - 22 August 2011 through 23 August 2011
ER -