SIMULATION ON MECHANICAL BEHAVIOR OF CONCRETE WITH HEXAGON RECYCLED COARSE AGGREGATE IN RANDOM DISTRIBUTION

Author(s): Xiao Jianzhuang, Lin Zhuangbin, Zhang Kaijian and Sun Chang
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: 244-251
Total Pages: 8
Language: English

Abstract: On the basis of the relationship between two-dimensional (2D) hexagon and threedimensional (3D) sphere applying Fuller’s ideal gradation curve, this paper focuses on simulation study on the mechanical behavior of recycled aggregate concrete (RAC) with rotating hexagons and circles to represent the recycled coarse aggregate (RCA). The coordinates, radiuses and initial angles of hexagons in random distribution are generated by Matlab and numerically modeled by software of ANSYS. The hexagons, the bows between hexagons and circles or the other parts in ANSYS models represent natural coarse aggregate (NCA), old mortar or new mortar, respectively. The simulation results show that the distribution of RCA with the same gradation influences the compressive strength of RAC. When the RCA replacement ratio is 100%, the compressive strength of RAC equals to 50% of the natural aggregate concrete (NAC). On the whole, the peak strain of RAC delays slightly from 0.0019 to 0.0024 with the RCA replacement ratio increases from 0% to 100%.

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