Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout
Normal concrete-polyurethane grout (NC-PUG) composite U-shaped and beam specimens were developed in this study to evaluate the capability and efficacy of PU grouting material prepared from mixing bio-based polyurethane (PU) and quartz sand as a coating material. The composite specimens were subjecte...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523007271 |
| _version_ | 1797454568190115840 |
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| author | S.I. Haruna Han Zhu Yasser E. Ibrahim Jianwen Shao Musa Adamu Omar Shabbir Ahmed |
| author_facet | S.I. Haruna Han Zhu Yasser E. Ibrahim Jianwen Shao Musa Adamu Omar Shabbir Ahmed |
| author_sort | S.I. Haruna |
| collection | DOAJ |
| description | Normal concrete-polyurethane grout (NC-PUG) composite U-shaped and beam specimens were developed in this study to evaluate the capability and efficacy of PU grouting material prepared from mixing bio-based polyurethane (PU) and quartz sand as a coating material. The composite specimens were subjected to dynamic and flexural loads using U-shaped drop-weight impact test (USDWIT) and three-point bending test, respectively. Various PUG overlaid thicknesses and configurations were adopted to improve the impact and flexural behavior of the concrete. Weibull distribution analysis was performed on the USDWIT result. The result indicated that the reference NC-PUG beam exhibited the highest load-carrying capacity of 18.26 kN and the lowest ultimate deflection of 0.52 mm compared to the composite NC-PUG specimens. While, the NC beam retrofitted with a 10 mm thickness overlaid at the top surface (NC-PUGT10) revealed a reduced ultimate load-carrying capacity compared to the reference NC-PUG specimen. The impact performance of the composite U-shaped NC-PUG specimen have remarkably improved due to the influence of PU grouting materials overlaid, with a higher ductility index, which tends to change the brittle nature of concrete to a ductile state. The energy absorption capacity at the failure stage of the NC-PUGT5 is 16 times that of the reference U-shaped NC-PUG specimen. The NC-PUGTB5 and NC-PUGT10 revealed impact strength, which is 52.28 times and 68.1 times more than the reference specimens, respectively. Reliability analysis indicated that about 80% of the U-shaped NC-PUG specimen can withstand 63 impact times at the failure stage. The finding showed that retrofitting concrete structures with PUG material is a promising and sustainable method to protect the concrete structure against dynamic loads |
| first_indexed | 2024-03-09T15:39:55Z |
| format | Article |
| id | doaj.art-75f436f7048d4bb88fbadf26e4632091 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:55Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-75f436f7048d4bb88fbadf26e46320912023-11-25T04:49:14ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02547Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane groutS.I. Haruna0Han Zhu1Yasser E. Ibrahim2Jianwen Shao3Musa Adamu4Omar Shabbir Ahmed5School of Civil Engineering, Tianjin University, Tianjin 300350, China; Engineering Management Department, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi Arabia; Corresponding author at: School of Civil Engineering, Tianjin University, Tianjin 300350, China.School of Civil Engineering, Tianjin University, Tianjin 300350, China; Key Laboratory of Coast Civil structure Safety of the Ministry of Education, Tianjin University, Tianjin 300350, ChinaEngineering Management Department, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi Arabia; Corresponding author.School of Civil Engineering, Tianjin University, Tianjin 300350, ChinaEngineering Management Department, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi ArabiaEngineering Management Department, College of Engineering, Prince Sultan University, Riyadh 11586, Saudi ArabiaNormal concrete-polyurethane grout (NC-PUG) composite U-shaped and beam specimens were developed in this study to evaluate the capability and efficacy of PU grouting material prepared from mixing bio-based polyurethane (PU) and quartz sand as a coating material. The composite specimens were subjected to dynamic and flexural loads using U-shaped drop-weight impact test (USDWIT) and three-point bending test, respectively. Various PUG overlaid thicknesses and configurations were adopted to improve the impact and flexural behavior of the concrete. Weibull distribution analysis was performed on the USDWIT result. The result indicated that the reference NC-PUG beam exhibited the highest load-carrying capacity of 18.26 kN and the lowest ultimate deflection of 0.52 mm compared to the composite NC-PUG specimens. While, the NC beam retrofitted with a 10 mm thickness overlaid at the top surface (NC-PUGT10) revealed a reduced ultimate load-carrying capacity compared to the reference NC-PUG specimen. The impact performance of the composite U-shaped NC-PUG specimen have remarkably improved due to the influence of PU grouting materials overlaid, with a higher ductility index, which tends to change the brittle nature of concrete to a ductile state. The energy absorption capacity at the failure stage of the NC-PUGT5 is 16 times that of the reference U-shaped NC-PUG specimen. The NC-PUGTB5 and NC-PUGT10 revealed impact strength, which is 52.28 times and 68.1 times more than the reference specimens, respectively. Reliability analysis indicated that about 80% of the U-shaped NC-PUG specimen can withstand 63 impact times at the failure stage. The finding showed that retrofitting concrete structures with PUG material is a promising and sustainable method to protect the concrete structure against dynamic loadshttp://www.sciencedirect.com/science/article/pii/S2214509523007271Impact resistanceConcretePU grouting materialU-shaped specimenRepeated drop-weight impact testFlexural behavior |
| spellingShingle | S.I. Haruna Han Zhu Yasser E. Ibrahim Jianwen Shao Musa Adamu Omar Shabbir Ahmed Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout Case Studies in Construction Materials Impact resistance Concrete PU grouting material U-shaped specimen Repeated drop-weight impact test Flexural behavior |
| title | Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout |
| title_full | Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout |
| title_fullStr | Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout |
| title_full_unstemmed | Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout |
| title_short | Impact resistance and flexural behavior of U-shaped concrete specimen retrofitted with polyurethane grout |
| title_sort | impact resistance and flexural behavior of u shaped concrete specimen retrofitted with polyurethane grout |
| topic | Impact resistance Concrete PU grouting material U-shaped specimen Repeated drop-weight impact test Flexural behavior |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523007271 |
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