Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches
Compared with carbon steel, traces of Ni, Cr, Ti, and other corrosion-resistant alloying elements were added to the matrix of bridge weathering steel, which resulted in the steel surface forming a strong adhesion and dense patina that hindered the penetration of atmospheric oxygen elements into the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523002814 |
| _version_ | 1797798859214159872 |
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| author | Hang Yin Ernian Zhao Xin Zhang Kai Yan |
| author_facet | Hang Yin Ernian Zhao Xin Zhang Kai Yan |
| author_sort | Hang Yin |
| collection | DOAJ |
| description | Compared with carbon steel, traces of Ni, Cr, Ti, and other corrosion-resistant alloying elements were added to the matrix of bridge weathering steel, which resulted in the steel surface forming a strong adhesion and dense patina that hindered the penetration of atmospheric oxygen elements into the steel and significantly delayed the development and spread of rust corrosion. Therefore, the weathering steel owes its uniqueness to the formation of a patina that protects the steel from further corrosion. The change in its chemical composition partially influences the phase-transformation temperature, which further affects its post-fire performance. As weathering steel without coating is increasingly adopted in bridge construction, investigating its mechanical properties after fire exposure using different cooling methods is important. Therefore, the mechanical properties of S355J2W bridge weathering steel under rising temperatures and subsequent cooling using three approaches such as cooling in air (CIA), foam (CIF), and water (CIW), were investigated experimentally. Tensile experiments on post-fire S355J2W steel specimens with three different artificial cooling methods were performed to obtain the stress-strain relationships. The tensile fracture morphology was studied using Scanning electron microscope (SEM). The effects of the rising temperature and cooling approach on the mechanical performance of S355J2W steel were analyzed. The results indicated the influence of rising temperature and artificial cooling approach is not significant on the elastic modulus of S355J2W steel, but had an effect on the ultimate strength, yield strength, and ductility. Finally, predictive equations were proposed concerning the post-fire performance of S355J2W steel, laying a foundation for assessing the behavior of bridge weathering steel after fire. |
| first_indexed | 2024-03-13T04:11:14Z |
| format | Article |
| id | doaj.art-2af3610bcfe44c78a9ca55e14df0c337 |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-13T04:11:14Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-2af3610bcfe44c78a9ca55e14df0c3372023-06-21T06:54:30ZengElsevierCase Studies in Construction Materials2214-50952023-07-0118e02101Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approachesHang Yin0Ernian Zhao1Xin Zhang2Kai Yan3School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, ChinaSchool of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China; Key Laboratory of Building Structural Retrofitting and Underground Space Engineering (Shandong Jianzhu University), Ministry of Education, Jinan 250101, China; Engineering Research Institute of Appraisal and Strengthening of Shandong Jianzhu University Co., Ltd., Jinan 250013, China; Corresponding author at: School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China.School of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China; Key Laboratory of Building Structural Retrofitting and Underground Space Engineering (Shandong Jianzhu University), Ministry of Education, Jinan 250101, China; Engineering Research Institute of Appraisal and Strengthening of Shandong Jianzhu University Co., Ltd., Jinan 250013, ChinaSchool of Civil Engineering, Shandong Jianzhu University, Jinan 250101, China; Key Laboratory of Building Structural Retrofitting and Underground Space Engineering (Shandong Jianzhu University), Ministry of Education, Jinan 250101, ChinaCompared with carbon steel, traces of Ni, Cr, Ti, and other corrosion-resistant alloying elements were added to the matrix of bridge weathering steel, which resulted in the steel surface forming a strong adhesion and dense patina that hindered the penetration of atmospheric oxygen elements into the steel and significantly delayed the development and spread of rust corrosion. Therefore, the weathering steel owes its uniqueness to the formation of a patina that protects the steel from further corrosion. The change in its chemical composition partially influences the phase-transformation temperature, which further affects its post-fire performance. As weathering steel without coating is increasingly adopted in bridge construction, investigating its mechanical properties after fire exposure using different cooling methods is important. Therefore, the mechanical properties of S355J2W bridge weathering steel under rising temperatures and subsequent cooling using three approaches such as cooling in air (CIA), foam (CIF), and water (CIW), were investigated experimentally. Tensile experiments on post-fire S355J2W steel specimens with three different artificial cooling methods were performed to obtain the stress-strain relationships. The tensile fracture morphology was studied using Scanning electron microscope (SEM). The effects of the rising temperature and cooling approach on the mechanical performance of S355J2W steel were analyzed. The results indicated the influence of rising temperature and artificial cooling approach is not significant on the elastic modulus of S355J2W steel, but had an effect on the ultimate strength, yield strength, and ductility. Finally, predictive equations were proposed concerning the post-fire performance of S355J2W steel, laying a foundation for assessing the behavior of bridge weathering steel after fire.http://www.sciencedirect.com/science/article/pii/S2214509523002814S355J2W weathering steelPost-fireCooling methodTensile testMechanical performance |
| spellingShingle | Hang Yin Ernian Zhao Xin Zhang Kai Yan Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches Case Studies in Construction Materials S355J2W weathering steel Post-fire Cooling method Tensile test Mechanical performance |
| title | Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches |
| title_full | Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches |
| title_fullStr | Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches |
| title_full_unstemmed | Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches |
| title_short | Evaluating post-fire mechanical performance of S355J2W weathering steel with different artificial cooling approaches |
| title_sort | evaluating post fire mechanical performance of s355j2w weathering steel with different artificial cooling approaches |
| topic | S355J2W weathering steel Post-fire Cooling method Tensile test Mechanical performance |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523002814 |
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