TY - JOUR
T1 - DEM simulation of SCC flow in L-Box set-up
T2 - Influence of coarse aggregate shape on SCC flowability
AU - Cui, Wei
AU - Yan, Wei shuo
AU - Song, Hui fang
AU - Wu, Xin li
N1 - Funding Information:
This research was supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant no. 51621092 ) and Joint Fund of Natural Science Foundation of China and Yalong River Hydropower Development Co., Ltd . (Grant no. U1765106 ).
Funding Information:
This research was supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant no. 51621092) and Joint Fund of Natural Science Foundation of China and Yalong River Hydropower Development Co. Ltd. (Grant no. U1765106).
PY - 2020/5
Y1 - 2020/5
N2 - Coarse aggregate are one of the main components of self-compacting concrete (SCC) and the size, shape, and grading of coarse aggregate can lead to different characteristics of SCC. In this paper, the effect of needle-shaped coarse aggregate on SCC flowability is systematically investigated and presented. A new method is proposed to randomly generate SCC with arbitrary aggregate shape and grading. Aggregate shapes are determined and classified by calculating the shape descriptors of aggregate, and thereby, SCC meeting the calculation requirements is generated. Based on this new method of aggregate generation, the discrete element method (DEM) is used to simulate the SCC flow process in L-box test. By continuously adjusting the content of needle-shaped coarse aggregate, the impact of coarse aggregate shape on the SCC flowability is evaluated, and the acceptable range of needle-shaped coarse aggregate content is obtained, which has guiding significance for the actual selection of concrete coarse aggregate.
AB - Coarse aggregate are one of the main components of self-compacting concrete (SCC) and the size, shape, and grading of coarse aggregate can lead to different characteristics of SCC. In this paper, the effect of needle-shaped coarse aggregate on SCC flowability is systematically investigated and presented. A new method is proposed to randomly generate SCC with arbitrary aggregate shape and grading. Aggregate shapes are determined and classified by calculating the shape descriptors of aggregate, and thereby, SCC meeting the calculation requirements is generated. Based on this new method of aggregate generation, the discrete element method (DEM) is used to simulate the SCC flow process in L-box test. By continuously adjusting the content of needle-shaped coarse aggregate, the impact of coarse aggregate shape on the SCC flowability is evaluated, and the acceptable range of needle-shaped coarse aggregate content is obtained, which has guiding significance for the actual selection of concrete coarse aggregate.
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U2 - 10.1016/j.cemconcomp.2020.103558
DO - 10.1016/j.cemconcomp.2020.103558
M3 - Article
AN - SCOPUS:85079550105
SN - 0958-9465
VL - 109
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
M1 - 103558
ER -