Flexural behavior and performance assessment of corroded geopolymer concrete beams after fire exposure
Due to the tremendous increase in civil infrastructure development, the need for sustainable construction is gaining more interest. In addition to this, the performance of structures under extremely harsh environments is critical, such as corrosion in offshore buildings and fire accidents in the bui...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Case Studies in Chemical and Environmental Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666016425001392 |
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| Summary: | Due to the tremendous increase in civil infrastructure development, the need for sustainable construction is gaining more interest. In addition to this, the performance of structures under extremely harsh environments is critical, such as corrosion in offshore buildings and fire accidents in the building. In the present study, the flexural performance of GPC was observed under the influence of corrosion (accelerated corrosion) and the influence of fire temperature (subjecting the beam specimens to 60 minutes and 120 minutes following ISO 834) separately. Also, the combined effect of corrosion and fire temperature was examined in detail; after inducing the corrosion, the specimens were subjected to two heating durations specified above. The mechanical performance of the beam specimens, such as load-carrying capacity, load-deflection behavior, stiffness, ductility, and energy absorption capacity, was examined in detail. The specimen exposed to 60 minutes (Ref-60) exhibited a substantial drop in ultimate load capacity of 44 kN, showing a 33 % decrease as compared to the specimen after 120 minutes of heating (Ref-120), a 62 % reduction in load was observed compared to the Ref specimen. The corroded specimen (CR), exposed to elevated temperature for 120 minutes of heating exhibited a drop in the ultimate load capacity and showed the ultimate load of 23 kN with a loss of 65 %. The ductility index for the Ref-120 specimen is 44 % higher than the Ref-60. Similarly, in the CR-60 and CR-120 specimens, the ductility index dropped by 62 % and 53 % compared to the Ref specimen. |
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| ISSN: | 2666-0164 |