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Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
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Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
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Journal Article
Numerical Study on Concrete Pumping Behavior via Local Flow Simulation with Discrete Element Method
2019
Overview
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.
Publisher
MDPI AG,MDPI
Subject
