Academic Journal
GFRP-reinforced concrete slabs: fire resistance and design efficiency
| العنوان: | GFRP-reinforced concrete slabs: fire resistance and design efficiency |
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| المؤلفون: | Hajiloo, Hamzeh, Green, Mark F., Noël, Martin, Bénichou, Noureddine, Sultan, Mohamed |
| بيانات النشر: | American Society of Civil Engineers |
| سنة النشر: | 2019 |
| المجموعة: | National Research Council Canada: NRC Publications Archive |
| الوصف: | Thickening concrete cover to obtain an adequate fire resistance lowers the efficiency of glass fiber–reinforced polymer (GFRP) reinforcement and increases the cost relative to conventional steel reinforcement. This paper investigates the fire resistance of two full-scale GFRP-RC slabs with only 40 mm of clear concrete cover and 200 mm of unexposed (cool) anchor zone at the ends. Both slabs endured 3 h under the standard fire. The slabs were loaded with a sustained load, which caused a moment equal to 45% of their ultimate flexural strength. Emphasis was placed on studying the bond behavior of GFRP bars by comprehensively investigating temperature distributions particularly at the unexposed anchor zones at the ends of the slabs. The temperature reduces significantly in the unexposed zones, providing an adequate anchorage for the bars when almost the entire GFRP-to-concrete bond deteriorated in the exposed zone. The analysis of the experimental results showed that the increase in the tensile force in the GFRP bars during the standard fire is below 50% of the existing sustained force. A new model considers the bond degradation to predict the fire resistance of GFRP-reinforced slabs. The results enable an efficient, economic, and fire-safe application of GFRP reinforcement in concrete construction by reducing the concrete cover. ; Peer reviewed: Yes ; NRC publication: Yes |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | text |
| اللغة: | English |
| تدمد: | 1090-0268 1943-5614 |
| Relation: | Journal of Composites for Construction, Volume: 23, Issue: 2, Publication date: 2019-04 |
| DOI: | 10.1061/(ASCE)CC.1943-5614.0000937 |
| الاتاحة: | https://doi.org/10.1061/(ASCE)CC.1943-5614.0000937 https://nrc-publications.canada.ca/eng/view/object/?id=c441acf8-f995-48dc-9156-6912aa4f426a https://nrc-publications.canada.ca/fra/voir/objet/?id=c441acf8-f995-48dc-9156-6912aa4f426a |
| رقم الانضمام: | edsbas.D7D5DE2E |
| قاعدة البيانات: | BASE |
| تدمد: | 10900268 19435614 |
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| DOI: | 10.1061/(ASCE)CC.1943-5614.0000937 |