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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509521002795 |
| _version_ | 1818388739825598464 |
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| 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 |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T04:30:38Z |
| format | Article |
| id | doaj.art-f64822c6925041d3ac72b0543c1607af |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-12-14T04:30:38Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-f64822c6925041d3ac72b0543c1607af2022-12-21T23:17:06ZengElsevierCase Studies in Construction Materials2214-50952021-12-0115e00764Practical considerations of porosity, strength, and acoustic absorption of structural pervious concreteAbel Shiferaw Alemu0Jinyoung Yoon1Million Tafesse2Yo-Seob Seo3Hyeong-Ki Kim4Sukhoon Pyo5Department of Architectural Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Republic of KoreaDepartment of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, USAResearch and Development Division, MC-Bauchemie Manufacturing Plc., Addis Ababa 5452, EthiopiaDepartment of Oral and Maxillofacial Radiology, College of Dentistry, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Republic of KoreaDepartment of Architectural Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Republic of Korea; Corresponding authors.Department of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea; Corresponding authors.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.http://www.sciencedirect.com/science/article/pii/S2214509521002795Pervious concreteAggregatesPracticalPorosityStrengthAcoustic properties |
| spellingShingle | 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 Case Studies in Construction Materials Pervious concrete Aggregates Practical Porosity Strength Acoustic properties |
| title | 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_short | 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 |
| topic | Pervious concrete Aggregates Practical Porosity Strength Acoustic properties |
| url | http://www.sciencedirect.com/science/article/pii/S2214509521002795 |
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