Cargando…

Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method

The use of self-consolidating concrete and advanced pumping system enables efficient construction of super high-rise buildings; however, risks such as clogging or even bursting of pipeline still exist. To better understand the fresh concrete pumping mechanisms in detail, the discrete element method...

Descripción completa

Detalles Bibliográficos
Autores principales: Zhan, Yijian, Gong, Jian, Huang, Yulin, Shi, Chong, Zuo, Zibo, Chen, Yiqun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539973/
https://www.ncbi.nlm.nih.gov/pubmed/31052290
http://dx.doi.org/10.3390/ma12091415
_version_ 1783422516054720512
author Zhan, Yijian
Gong, Jian
Huang, Yulin
Shi, Chong
Zuo, Zibo
Chen, Yiqun
author_facet Zhan, Yijian
Gong, Jian
Huang, Yulin
Shi, Chong
Zuo, Zibo
Chen, Yiqun
author_sort Zhan, Yijian
collection PubMed
description The use of self-consolidating concrete and advanced pumping system enables efficient construction of super high-rise buildings; however, risks such as clogging or even bursting of pipeline still exist. To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed. Important factors related to the pipe geometry, aggregate geometry and pumping condition were considered during a series of parametric studies. Based on the simulation results, their impact on the local pumping performance is summarized. The present work demonstrates that the discrete element simulation offers a useful way to evaluate the influence of various parameters on the pumpability of fresh concrete.
format Online
Article
Text
id pubmed-6539973
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-65399732019-06-05 Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method Zhan, Yijian Gong, Jian Huang, Yulin Shi, Chong Zuo, Zibo Chen, Yiqun Materials (Basel) Article The use of self-consolidating concrete and advanced pumping system enables efficient construction of super high-rise buildings; however, risks such as clogging or even bursting of pipeline still exist. To better understand the fresh concrete pumping mechanisms in detail, the discrete element method is employed in this paper for the numerical simulation of local pumping problems. By modeling the coarse aggregates as rigid clumps and appropriately defining the contact models, the concrete flow in representative pipeline units is well revealed. Important factors related to the pipe geometry, aggregate geometry and pumping condition were considered during a series of parametric studies. Based on the simulation results, their impact on the local pumping performance is summarized. The present work demonstrates that the discrete element simulation offers a useful way to evaluate the influence of various parameters on the pumpability of fresh concrete. MDPI 2019-04-30 /pmc/articles/PMC6539973/ /pubmed/31052290 http://dx.doi.org/10.3390/ma12091415 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhan, Yijian
Gong, Jian
Huang, Yulin
Shi, Chong
Zuo, Zibo
Chen, Yiqun
Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
title Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
title_full Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
title_fullStr Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
title_full_unstemmed Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
title_short Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
title_sort numerical study on concrete pumping behavior via local flow simulation with discrete element method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6539973/
https://www.ncbi.nlm.nih.gov/pubmed/31052290
http://dx.doi.org/10.3390/ma12091415
work_keys_str_mv AT zhanyijian numericalstudyonconcretepumpingbehaviorvialocalflowsimulationwithdiscreteelementmethod
AT gongjian numericalstudyonconcretepumpingbehaviorvialocalflowsimulationwithdiscreteelementmethod
AT huangyulin numericalstudyonconcretepumpingbehaviorvialocalflowsimulationwithdiscreteelementmethod
AT shichong numericalstudyonconcretepumpingbehaviorvialocalflowsimulationwithdiscreteelementmethod
AT zuozibo numericalstudyonconcretepumpingbehaviorvialocalflowsimulationwithdiscreteelementmethod
AT chenyiqun numericalstudyonconcretepumpingbehaviorvialocalflowsimulationwithdiscreteelementmethod