Defining clogging potential for permeable concrete

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Title: Defining clogging potential for permeable concrete
Authors: Kia, A
Wong, HS
Cheeseman, C
Item Type: Journal Article
Abstract: Permeable concrete is used to reduce urban flooding as it allows water to flow through normally impermeable infrastructure. It is prone to clogging by particulate matter and predicting the long-term performance of permeable concrete is challenging as there is currently no reliable means of characterising clogging potential. This paper reports on the performance of a range of laboratory-prepared and commercial permeable concretes, close packed glass spheres and aggregate particles of varying size, exposed to different clogging methods to understand this phenomena. New methods were developed to study clogging and define clogging potential. The tests involved applying flowing water containing sand and/or clay in cycles, and measuring the change in permeability. Substantial permeability reductions were observed in all samples, particularly when exposed to sand and clay simultaneously. Three methods were used to define clogging potential based on measuring the initial permeability decay, half-life cycle and number of cycles to full clogging. We show for the first time strong linear correlations between these parameters for a wide range of samples, indicating their use for service-life prediction.
Issue Date: 15-Aug-2018
Date of Acceptance: 6-May-2018
URI: http://hdl.handle.net/10044/1/59866
DOI: https;//dx.doi.org/10.1016/j.jenvman.2018.05.016
ISSN: 0301-4797
Publisher: Elsevier
Start Page: 44
End Page: 53
Journal / Book Title: Journal of Environmental Management
Volume: 220
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Aggregate
Bentonite clay
Clogging potential
Glass sphere
Permeability
Pervious concrete
Sand
Service-life
MD Multidisciplinary
Environmental Sciences
Publication Status: Published
Online Publication Date: 2018-05-11
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering



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