A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Deflection behavior of prestressed crumb rubber concrete beam reinforced with carbon fibers at elevated temperatures
Engineers have always taken a different perception to the structural concepts of fire-resistant buildings in civil engineering. Concrete structural members are expected to satisfy appropriate fire safety requirements. To achieve fire safety various methods are used. One such method is to reduce the use of natural resources by suitable alternatives as aggregates at certain proportions to the concrete mixture. This can improve the strength of the concrete and life span of the structure. Numerous studies are focused on adding suitable proportion of crumb rubber particles, steel fibers and carbon fibers as an alternative to the rock particles. This has resulted in increasing the strength of concrete at normal temperatures. The corrosion of steel in concrete structure is a challenge that determines longevity of the structure. To overcome this limitation, fiber reinforced polymers (FRP) are used. They have high strength to weight ratio and an excellent resistance to corrosion. The use of carbon fiber reinforced polymer (CFRP) has shown some promise. To enhance the durability and serviceability of the structure, prestressing application is globally used. Prestressing CFRP tendons in structures has resulted in reducing crack formation. However, the behavior of a combination of prestressed CFRP with crumb rubber concrete at elevated temperature remains unknown. This study focusses on the deflection behavior of prestressed CFRP reinforced with crumb rubber concrete beam at elevated temperatures. In this study an analytical model to determine the deflection of CFRP prestressed crumb rubber concrete beam subjected to practical elevated temperature is developed. The results are validated with the finite element model developed using Ansys. In addition, the results obtained are compared with indirect references from literature to recognize the practical behavior of the material. To conclude, a practical application is provided.
Deflection behavior of prestressed crumb rubber concrete beam reinforced with carbon fibers at elevated temperatures
Engineers have always taken a different perception to the structural concepts of fire-resistant buildings in civil engineering. Concrete structural members are expected to satisfy appropriate fire safety requirements. To achieve fire safety various methods are used. One such method is to reduce the use of natural resources by suitable alternatives as aggregates at certain proportions to the concrete mixture. This can improve the strength of the concrete and life span of the structure. Numerous studies are focused on adding suitable proportion of crumb rubber particles, steel fibers and carbon fibers as an alternative to the rock particles. This has resulted in increasing the strength of concrete at normal temperatures. The corrosion of steel in concrete structure is a challenge that determines longevity of the structure. To overcome this limitation, fiber reinforced polymers (FRP) are used. They have high strength to weight ratio and an excellent resistance to corrosion. The use of carbon fiber reinforced polymer (CFRP) has shown some promise. To enhance the durability and serviceability of the structure, prestressing application is globally used. Prestressing CFRP tendons in structures has resulted in reducing crack formation. However, the behavior of a combination of prestressed CFRP with crumb rubber concrete at elevated temperature remains unknown. This study focusses on the deflection behavior of prestressed CFRP reinforced with crumb rubber concrete beam at elevated temperatures. In this study an analytical model to determine the deflection of CFRP prestressed crumb rubber concrete beam subjected to practical elevated temperature is developed. The results are validated with the finite element model developed using Ansys. In addition, the results obtained are compared with indirect references from literature to recognize the practical behavior of the material. To conclude, a practical application is provided.
Deflection behavior of prestressed crumb rubber concrete beam reinforced with carbon fibers at elevated temperatures
Rajavadivelu, Indhu Priya (author)
2019-05-01
Miscellaneous
Electronic Resource
English
DDC:
690
Deflection of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures
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