Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures
Lightweight concrete has proven effective material due to its high strength-to-weight ratio, cost-effectiveness, improved sound insulation, and fire resistance. However, there is scarce data on the confinement behaviour of the lightweight concrete (LWC) exposed to elevated temperatures, particularly...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | Developments in the Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666165925000547 |
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| author | Rami Hawileh Hind Alharmoodi Abdallah Hajjaj Abdulaziz Aljarwan Sumit Sahoo Jamal Abdalla |
| author_facet | Rami Hawileh Hind Alharmoodi Abdallah Hajjaj Abdulaziz Aljarwan Sumit Sahoo Jamal Abdalla |
| author_sort | Rami Hawileh |
| collection | DOAJ |
| description | Lightweight concrete has proven effective material due to its high strength-to-weight ratio, cost-effectiveness, improved sound insulation, and fire resistance. However, there is scarce data on the confinement behaviour of the lightweight concrete (LWC) exposed to elevated temperatures, particularly when wrapped with fiber-reinforced polymers (FRP). This study explores the behaviour of LWC strengthened and repaired with carbon FRP (CFRP) laminates tested under elevated temperatures. LWC specimens wrapped with CFRP laminates are tested experimentally under temperatures varying from 20 °C to 800 °C. Parameters like compressive strength, stress-strain behaviour, elastic modulus, and failure modes are evaluated as a function of increasing temperature. Analytical models are developed to estimate the degradation on compressive strength and elastic modulus with temperature and validated against experimental data. The outcomes from this study support the use of CFRP wraps to partially restore the strength and elasticity in LWC compression members at moderate temperatures, enhancing its resilience in fire-prone applications. |
| format | Article |
| id | doaj-art-85dbaaadcc394561b3ee4be962767adc |
| institution | OA Journals |
| issn | 2666-1659 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Developments in the Built Environment |
| spelling | doaj-art-85dbaaadcc394561b3ee4be962767adc2025-08-20T02:17:13ZengElsevierDevelopments in the Built Environment2666-16592025-04-012210065410.1016/j.dibe.2025.100654Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperaturesRami Hawileh0Hind Alharmoodi1Abdallah Hajjaj2Abdulaziz Aljarwan3Sumit Sahoo4Jamal Abdalla5Corresponding author.; Department of Civil Engineering, American University of Sharjah, Sharjah, United Arab EmiratesDepartment of Civil Engineering, American University of Sharjah, Sharjah, United Arab EmiratesDepartment of Civil Engineering, American University of Sharjah, Sharjah, United Arab EmiratesDepartment of Civil Engineering, American University of Sharjah, Sharjah, United Arab EmiratesDepartment of Civil Engineering, American University of Sharjah, Sharjah, United Arab EmiratesDepartment of Civil Engineering, American University of Sharjah, Sharjah, United Arab EmiratesLightweight concrete has proven effective material due to its high strength-to-weight ratio, cost-effectiveness, improved sound insulation, and fire resistance. However, there is scarce data on the confinement behaviour of the lightweight concrete (LWC) exposed to elevated temperatures, particularly when wrapped with fiber-reinforced polymers (FRP). This study explores the behaviour of LWC strengthened and repaired with carbon FRP (CFRP) laminates tested under elevated temperatures. LWC specimens wrapped with CFRP laminates are tested experimentally under temperatures varying from 20 °C to 800 °C. Parameters like compressive strength, stress-strain behaviour, elastic modulus, and failure modes are evaluated as a function of increasing temperature. Analytical models are developed to estimate the degradation on compressive strength and elastic modulus with temperature and validated against experimental data. The outcomes from this study support the use of CFRP wraps to partially restore the strength and elasticity in LWC compression members at moderate temperatures, enhancing its resilience in fire-prone applications.http://www.sciencedirect.com/science/article/pii/S2666165925000547Lightweight concreteCarbon fibre reinforced polymerStrengtheningRepair of concreteElevated temperature |
| spellingShingle | Rami Hawileh Hind Alharmoodi Abdallah Hajjaj Abdulaziz Aljarwan Sumit Sahoo Jamal Abdalla Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures Developments in the Built Environment Lightweight concrete Carbon fibre reinforced polymer Strengthening Repair of concrete Elevated temperature |
| title | Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures |
| title_full | Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures |
| title_fullStr | Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures |
| title_full_unstemmed | Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures |
| title_short | Repair and strengthening of CFRP-wrapped lightweight concrete exposed to elevated temperatures |
| title_sort | repair and strengthening of cfrp wrapped lightweight concrete exposed to elevated temperatures |
| topic | Lightweight concrete Carbon fibre reinforced polymer Strengthening Repair of concrete Elevated temperature |
| url | http://www.sciencedirect.com/science/article/pii/S2666165925000547 |
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