Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors
This study aimed to evaluate the shear strengthening capabilities of reinforced concrete (RC) shallow beams constrained by externally bonded glass chopped strand mat (GCSM) sheets and metallic mechanical anchors. The research investigated the effectiveness of GCSM sheets, known for their cost-effect...
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| Format: | Article |
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AIMS Press
2024-10-01
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| Series: | AIMS Materials Science |
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| Online Access: | https://www.aimspress.com/article/doi/10.3934/matersci.2024042 |
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| author | Phromphat Thansirichaisree Hisham Mohamad Mingliang Zhou Ali Ejaz Panumas Saingam Qudeer Hussain Suniti Suparp |
| author_facet | Phromphat Thansirichaisree Hisham Mohamad Mingliang Zhou Ali Ejaz Panumas Saingam Qudeer Hussain Suniti Suparp |
| author_sort | Phromphat Thansirichaisree |
| collection | DOAJ |
| description | This study aimed to evaluate the shear strengthening capabilities of reinforced concrete (RC) shallow beams constrained by externally bonded glass chopped strand mat (GCSM) sheets and metallic mechanical anchors. The research investigated the effectiveness of GCSM sheets, known for their cost-effectiveness, ease of installation, and absence of specialized labor requirements, in improving the shear capacity, energy dissipation, and deformation capacity of RC beams. Experimental results revealed that GCSM sheets significantly enhanced the deformation capability, ultimate shear strength, and energy dissipation of RC shallow beams. Beams with GCSM applied to both the sides and bottom (SB) configuration demonstrated higher load-bearing capacity and energy dissipation compared to beams with GCSM only on the sides. The incorporation of a metallic mechanical bolt anchorage (MBA) system reduced the load-carrying capacities of beams with SB and beams with GCSM applied to only side by 28% and 5%, respectively, due to the drilling required for installation. However, the MBA system significantly improved the deflection performance, with beam B-S-A (GCSM on sides only and supplemented with MBA exhibiting the highest ultimate deflection of 23.92 mm. Overall, beams equipped with the MBA system showed superior ultimate deflection compared with those without it. Despite some reductions in load-bearing capacity, GCSM sheets combined with MBA systems proved highly effective in enhancing the shear strength, energy dissipation, and deformation capabilities of RC shallow beams, making them a valuable alternative for shear strengthening applications. |
| format | Article |
| id | doaj-art-83bf162299834c8c8d5abf34fd9eb407 |
| institution | Kabale University |
| issn | 2372-0484 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | AIMS Press |
| record_format | Article |
| series | AIMS Materials Science |
| spelling | doaj-art-83bf162299834c8c8d5abf34fd9eb4072025-01-24T01:30:26ZengAIMS PressAIMS Materials Science2372-04842024-10-0111585888110.3934/matersci.2024042Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchorsPhromphat Thansirichaisree0Hisham Mohamad1Mingliang Zhou2Ali Ejaz3Panumas Saingam4Qudeer Hussain5Suniti Suparp6Thammasat Research Unit in Infrastructure Inspection and Monitoring, Repair and Strengthening (IIMRAS), Faculty of Engineering, Thammasat School of Engineering, Thammasat University Rangsit, Klong Luang, Pathumthani, ThailandCivil & Environmental Engineering Department, Universiti Teknologi PETRONAS, Seri Iskandar, MalaysiaKey Laboratory of Geotechnical and Underground Engineering of Minister of Education and Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Siping Road 1239, Shanghai 200092, ChinaNational Institute of Transportation, National University of Sciences and Technology (NUST), Islamabad, PakistanDepartment of Civil Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, ThailandCivil Engineering Department, Kasem Bundit University, ThailandDepartment of Civil and Environmental Engineering, Srinakharinwirot University, Nakhonnayok, ThailandThis study aimed to evaluate the shear strengthening capabilities of reinforced concrete (RC) shallow beams constrained by externally bonded glass chopped strand mat (GCSM) sheets and metallic mechanical anchors. The research investigated the effectiveness of GCSM sheets, known for their cost-effectiveness, ease of installation, and absence of specialized labor requirements, in improving the shear capacity, energy dissipation, and deformation capacity of RC beams. Experimental results revealed that GCSM sheets significantly enhanced the deformation capability, ultimate shear strength, and energy dissipation of RC shallow beams. Beams with GCSM applied to both the sides and bottom (SB) configuration demonstrated higher load-bearing capacity and energy dissipation compared to beams with GCSM only on the sides. The incorporation of a metallic mechanical bolt anchorage (MBA) system reduced the load-carrying capacities of beams with SB and beams with GCSM applied to only side by 28% and 5%, respectively, due to the drilling required for installation. However, the MBA system significantly improved the deflection performance, with beam B-S-A (GCSM on sides only and supplemented with MBA exhibiting the highest ultimate deflection of 23.92 mm. Overall, beams equipped with the MBA system showed superior ultimate deflection compared with those without it. Despite some reductions in load-bearing capacity, GCSM sheets combined with MBA systems proved highly effective in enhancing the shear strength, energy dissipation, and deformation capabilities of RC shallow beams, making them a valuable alternative for shear strengthening applications.https://www.aimspress.com/article/doi/10.3934/matersci.2024042rc shallow beamsshear strengtheningglass chopped strand mat fiberconfinement configurationmetallic mechanical bolt anchorage systemload-deflection responses |
| spellingShingle | Phromphat Thansirichaisree Hisham Mohamad Mingliang Zhou Ali Ejaz Panumas Saingam Qudeer Hussain Suniti Suparp Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors AIMS Materials Science rc shallow beams shear strengthening glass chopped strand mat fiber confinement configuration metallic mechanical bolt anchorage system load-deflection responses |
| title | Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors |
| title_full | Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors |
| title_fullStr | Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors |
| title_full_unstemmed | Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors |
| title_short | Behavior of shallow concrete beams strengthened using low-cost GCSM and mechanical anchors |
| title_sort | behavior of shallow concrete beams strengthened using low cost gcsm and mechanical anchors |
| topic | rc shallow beams shear strengthening glass chopped strand mat fiber confinement configuration metallic mechanical bolt anchorage system load-deflection responses |
| url | https://www.aimspress.com/article/doi/10.3934/matersci.2024042 |
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