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Article: Pervious concrete: effects of porosity on permeability and strength

TitlePervious concrete: effects of porosity on permeability and strength
Authors
Keywordscompressive strength permeability & pore-related properties plain concrete
Issue Date2021
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.concrete-research.com
Citation
Magazine of Concrete Research, 2021, v. 73 n. 2, p. 69-79 How to Cite?
AbstractPervious concrete needs to have many pores to achieve high water permeability, but excessive porosity may cause a serious reduction in strength. Herein, it is postulated that the interconnected porosity and open porosity, which can be separately measured, do not have the same effects on the performance of pervious concrete. To evaluate how the interconnected porosity and open porosity influence permeability and strength, a series of no-fines pervious concrete mixes with varying water/cement (w/c) ratio and paste volume were produced for testing of their interconnected porosity, open porosity, unsubmerged water permeability, submerged water permeability and compressive strength. From the test results, it was found that both the w/c ratio and paste volume have major effects on the porosity, permeability and strength. More importantly, regression analysis showed that the interconnected porosity is the governing factor determining the water permeability, whereas the open porosity and w/c ratio are together the governing factors determining the compressive strength. Lastly, the concurrent strength–permeability performance of the no-fines pervious concrete tested was evaluated.
Persistent Identifierhttp://hdl.handle.net/10722/308068
ISSN
2020 Impact Factor: 2.503
2020 SCImago Journal Rankings: 0.901
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, LG-
dc.contributor.authorFeng, JJ-
dc.contributor.authorZhu, J-
dc.contributor.authorChu, SH-
dc.contributor.authorKwan, AKH-
dc.date.accessioned2021-11-12T13:42:03Z-
dc.date.available2021-11-12T13:42:03Z-
dc.date.issued2021-
dc.identifier.citationMagazine of Concrete Research, 2021, v. 73 n. 2, p. 69-79-
dc.identifier.issn0024-9831-
dc.identifier.urihttp://hdl.handle.net/10722/308068-
dc.description.abstractPervious concrete needs to have many pores to achieve high water permeability, but excessive porosity may cause a serious reduction in strength. Herein, it is postulated that the interconnected porosity and open porosity, which can be separately measured, do not have the same effects on the performance of pervious concrete. To evaluate how the interconnected porosity and open porosity influence permeability and strength, a series of no-fines pervious concrete mixes with varying water/cement (w/c) ratio and paste volume were produced for testing of their interconnected porosity, open porosity, unsubmerged water permeability, submerged water permeability and compressive strength. From the test results, it was found that both the w/c ratio and paste volume have major effects on the porosity, permeability and strength. More importantly, regression analysis showed that the interconnected porosity is the governing factor determining the water permeability, whereas the open porosity and w/c ratio are together the governing factors determining the compressive strength. Lastly, the concurrent strength–permeability performance of the no-fines pervious concrete tested was evaluated.-
dc.languageeng-
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.concrete-research.com-
dc.relation.ispartofMagazine of Concrete Research-
dc.subjectcompressive strength permeability & pore-related properties plain concrete-
dc.titlePervious concrete: effects of porosity on permeability and strength-
dc.typeArticle-
dc.identifier.emailKwan, AKH: khkwan@hkucc.hku.hk-
dc.identifier.authorityKwan, AKH=rp00127-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1680/jmacr.19.00194-
dc.identifier.hkuros329677-
dc.identifier.volume73-
dc.identifier.issue2-
dc.identifier.spage69-
dc.identifier.epage79-
dc.identifier.isiWOS:000596329700002-
dc.publisher.placeUnited Kingdom-

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