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Simulation of the flow of self-compacting concrete in the V-funnel by SPH

Alyhya, W. S., Kulasegaram, S. and Karihaloo, B. L. 2017. Simulation of the flow of self-compacting concrete in the V-funnel by SPH. Cement and Concrete Research 100 , pp. 47-59. 10.1016/j.cemconres.2017.05.021

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Abstract

The flow of self-compacting concrete (SCC) mixes through a V-funnel is simulated from the moment the gate is opened until the time when the light was first seen in the bottom opening through observation from the top (discharge time, tv-funnel). For this simulation, the three-dimensional mesh-less smooth particle hydrodynamics (SPH) computational approach is chosen in which the SCC mix is treated as a non-Newtonian Bingham-type fluid. The numerical simulation results for the discharge time agree very favourably with those recorded in the laboratory on a range of normal strength SCC mixes with cube compressive strengths from 30 to 80 MPa with a maximum size crushed coarse aggregate of 20 mm. In contrast, the two-dimensional simulation of the V-funnel test is found to underestimate significantly the discharge time. The statistics of the distribution of the coarse aggregate particles equal to or larger than 8 mm in the mix (this limit is set by the number of particles used in the SPH simulations) shows that the mix remains homogeneous with no settlement of the heavier particles during the flow and after the flow has stopped.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0008-8846
Date of First Compliant Deposit: 18 August 2017
Date of Acceptance: 29 May 2017
Last Modified: 24 Apr 2020 02:22
URI: http://orca-mwe.cf.ac.uk/id/eprint/101272

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