AGGREGATE SHAPE EFFECTS ON THE MECHANICAL PROPERTY OF CONCRETE UNDER TENSILE LOADING: (1) SIMULATION OF ONE PARTICLE SYSTEM

Author(s): Lin Liu, Huisu Chen, Zhigang Zhu, Zhiwei Qian
Book Title: RILEM International Symposium on Concrete Modelling - CONMOD 2014
Editor: Kefei Li, Peiyu Yan and Rongwei Yang
ISBN: 978-2-35158-139-1
e-ISBN: 978-2-35158-140-7
Publisher: RILEM Publications SARL
Publication year: 2015
Pages: 290-296
Total Pages: 7
Language: English

Abstract: Investigations on the mechanical properties of concrete by computational modeling mostly were based on the meso-structure of concrete with spherical particles in the past decades. It may result in a significant discrepancy in simulations by ignoring the aggregate shape effects. In this study, the aggregate shape effects on the mechanical properties of concrete under tensile loading are explored by 3D numerical modeling. Preliminary simulations are carried out on one particle system. The meso-structures of one spherical aggregate, one ellipsoidal aggregate and one irregular shaped aggregate are constructed respectively. Then, the constructed meso-structures are digitalized into voxels, and 3D lattice fracturing analysis is performed on the digitalized meso-structures by applying tensile displacement. In this study, the load-displacement curve, load at first crack, tensile strength and crack propagation are presented and discussed.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00