Influences on Shotcrete Rebound from Walls with Random Roughness
Joint Authors
Li, Wenxin
Liu, Zhaoxia
Bian, Wenhui
Pan, Gang
Li, Pengcheng
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-23
Country of Publication
Egypt
No. of Pages
12
Abstract EN
Concrete slurry can be sprayed on walls for reinforcement; however, there is a certain amount of rebound which is hazardous, lowers production quality, and wastes material.
To investigate this problem, we studied single slurry droplets at the mesoscopic level.
We deduced the factors influencing droplet spreading and wall adhesion to create models of shotcrete rebound.
Then, a numerical simulation orthogonal experiment investigating droplet-wall impacts was performed.
The relationship between the spreading coefficient and each influencing factor is discussed, and numerical models are presented.
Finally, the obtained models are verified by physical experiments.
The results show that the spreading coefficient can be used to better characterize the effect of slurry droplet adhesion to walls.
Modeled and experimentally observed droplet-wall impacts showed good consistency.
The influence of each factor on the spreading coefficient was determined in the following order of strength: droplet velocity and viscosity, wall roughness, and surface tension.
The spreading coefficient increases with velocity, decreases with viscosity and roughness, and increases first and then decreases with surface tension.
This study improves the fluid dynamics-based theory of multiphase flow in concrete slurry and provides a theoretical basis for mitigating shotcrete rebound.
American Psychological Association (APA)
Liu, Zhaoxia& Bian, Wenhui& Pan, Gang& Li, Pengcheng& Li, Wenxin. 2018. Influences on Shotcrete Rebound from Walls with Random Roughness. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1121639
Modern Language Association (MLA)
Liu, Zhaoxia…[et al.]. Influences on Shotcrete Rebound from Walls with Random Roughness. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1121639
American Medical Association (AMA)
Liu, Zhaoxia& Bian, Wenhui& Pan, Gang& Li, Pengcheng& Li, Wenxin. Influences on Shotcrete Rebound from Walls with Random Roughness. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1121639
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1121639