Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete

This study was conducted to address practical problems in producing structural pervious concrete, such as issues with mix proportioning, paste sagging, porosity, strength, and acoustic absorption. Concrete mixtures with varying aggregate types, target void ratios, and fiber contents were cast in cyl...

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Autores principales:	Abel Shiferaw Alemu, Jinyoung Yoon, Million Tafesse, Yo-Seob Seo, Hyeong-Ki Kim, Sukhoon Pyo
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Pervious concrete Aggregates Practical Porosity Strength Acoustic properties Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/f64822c6925041d3ac72b0543c1607af
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id	oai:doaj.org-article:f64822c6925041d3ac72b0543c1607af
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spelling	oai:doaj.org-article:f64822c6925041d3ac72b0543c1607af2021-11-10T04:27:02ZPractical considerations of porosity, strength, and acoustic absorption of structural pervious concrete2214-509510.1016/j.cscm.2021.e00764https://doaj.org/article/f64822c6925041d3ac72b0543c1607af2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214509521002795https://doaj.org/toc/2214-5095This study was conducted to address practical problems in producing structural pervious concrete, such as issues with mix proportioning, paste sagging, porosity, strength, and acoustic absorption. Concrete mixtures with varying aggregate types, target void ratios, and fiber contents were cast in cylindrical and panel-type specimens to determine the compressive strength, porosity, and acoustic absorption coefficient. Porosities of the concrete measured by two methods, i.e., using the volumetric method and computed tomography scanning, were compared to confirm the pore network distribution. A surface impedance method was used to measure the acoustic absorption of the panel samples. Paste with a flow of 170 ± 10 mm containing synthetic fibers prevented sagging successfully even after mechanical vibration. The concrete produced with this paste and having target void ratios of 10–15% possessed adequate connected open pores for acoustic absorption coefficient over 0.5 and structural strength exceeding 20 MPa.Abel Shiferaw AlemuJinyoung YoonMillion TafesseYo-Seob SeoHyeong-Ki KimSukhoon PyoElsevierarticlePervious concreteAggregatesPracticalPorosityStrengthAcoustic propertiesMaterials of engineering and construction. Mechanics of materialsTA401-492ENCase Studies in Construction Materials, Vol 15, Iss , Pp e00764- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pervious concrete Aggregates Practical Porosity Strength Acoustic properties Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Pervious concrete Aggregates Practical Porosity Strength Acoustic properties Materials of engineering and construction. Mechanics of materials TA401-492 Abel Shiferaw Alemu Jinyoung Yoon Million Tafesse Yo-Seob Seo Hyeong-Ki Kim Sukhoon Pyo Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
description	This study was conducted to address practical problems in producing structural pervious concrete, such as issues with mix proportioning, paste sagging, porosity, strength, and acoustic absorption. Concrete mixtures with varying aggregate types, target void ratios, and fiber contents were cast in cylindrical and panel-type specimens to determine the compressive strength, porosity, and acoustic absorption coefficient. Porosities of the concrete measured by two methods, i.e., using the volumetric method and computed tomography scanning, were compared to confirm the pore network distribution. A surface impedance method was used to measure the acoustic absorption of the panel samples. Paste with a flow of 170 ± 10 mm containing synthetic fibers prevented sagging successfully even after mechanical vibration. The concrete produced with this paste and having target void ratios of 10–15% possessed adequate connected open pores for acoustic absorption coefficient over 0.5 and structural strength exceeding 20 MPa.
format	article
author	Abel Shiferaw Alemu Jinyoung Yoon Million Tafesse Yo-Seob Seo Hyeong-Ki Kim Sukhoon Pyo
author_facet	Abel Shiferaw Alemu Jinyoung Yoon Million Tafesse Yo-Seob Seo Hyeong-Ki Kim Sukhoon Pyo
author_sort	Abel Shiferaw Alemu
title	Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
title_short	Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
title_full	Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
title_fullStr	Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
title_full_unstemmed	Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
title_sort	practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/f64822c6925041d3ac72b0543c1607af
work_keys_str_mv	AT abelshiferawalemu practicalconsiderationsofporositystrengthandacousticabsorptionofstructuralperviousconcrete AT jinyoungyoon practicalconsiderationsofporositystrengthandacousticabsorptionofstructuralperviousconcrete AT milliontafesse practicalconsiderationsofporositystrengthandacousticabsorptionofstructuralperviousconcrete AT yoseobseo practicalconsiderationsofporositystrengthandacousticabsorptionofstructuralperviousconcrete AT hyeongkikim practicalconsiderationsofporositystrengthandacousticabsorptionofstructuralperviousconcrete AT sukhoonpyo practicalconsiderationsofporositystrengthandacousticabsorptionofstructuralperviousconcrete
_version_	1718440711427194880

Practical considerations of porosity, strength, and acoustic absorption of structural pervious concrete

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