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A platform for research: civil engineering, architecture and urbanism
Short-Term and Long-Term Performance of Precast HPC Sheet-Piles Prestressed with GFRP Bars
https://orcid.org/http://orcid.org/0000-0001-6480-4399
https://orcid.org/http://orcid.org/0000-0003-0895-0804
Aim of this research is to replace the traditional steel strands with new composite Glass Fiber Reinforced Polymer (GFRP) bars for the prestressing of precast High-Performance Concrete (HPC) sheet-piles.
The use of prestressing combined with non-corrosive rebars could be a good solution in all those cases in which highly aggressive environments can quickly jeopardize the functions of the structure. The prototype of the present study should be able to exploit the main advantages of the solutions currently available on the market, guaranteeing high durability and performance capacity and, last but not least, looking to sustainability of the next generation of RC structures.
Analytical considerations and experimental full-scale bending tests were carried out on young and 3-years old sheet-piles for which short-term and long-term behavior was accounted for.
The analysed prototype was pretensioned with GFRP bars to an initial stress at jacking equal to 46% of the characteristic ultimate strength while, at transfer stage, the stress on the GFRP bars stood at 35% one, substantially greater than the Codes provisions.
Based on the results obtained in the study, it can be concluded that a prestressing up to 46% of the GFRP bars ultimate capacity did not show any signs of adverse effects due to the high prestressing levels, confirming the effectiveness of the proposed solution. Furthermore, traditional analytical models, typical of steel prestressed structures, can be effectively extended to GFRP prestressed elements. The theoretical loads are comparable to the experimental ones, with errors lower than 3%, on the safe side.
Short-Term and Long-Term Performance of Precast HPC Sheet-Piles Prestressed with GFRP Bars
https://orcid.org/http://orcid.org/0000-0001-6480-4399
https://orcid.org/http://orcid.org/0000-0003-0895-0804
Aim of this research is to replace the traditional steel strands with new composite Glass Fiber Reinforced Polymer (GFRP) bars for the prestressing of precast High-Performance Concrete (HPC) sheet-piles.
The use of prestressing combined with non-corrosive rebars could be a good solution in all those cases in which highly aggressive environments can quickly jeopardize the functions of the structure. The prototype of the present study should be able to exploit the main advantages of the solutions currently available on the market, guaranteeing high durability and performance capacity and, last but not least, looking to sustainability of the next generation of RC structures.
Analytical considerations and experimental full-scale bending tests were carried out on young and 3-years old sheet-piles for which short-term and long-term behavior was accounted for.
The analysed prototype was pretensioned with GFRP bars to an initial stress at jacking equal to 46% of the characteristic ultimate strength while, at transfer stage, the stress on the GFRP bars stood at 35% one, substantially greater than the Codes provisions.
Based on the results obtained in the study, it can be concluded that a prestressing up to 46% of the GFRP bars ultimate capacity did not show any signs of adverse effects due to the high prestressing levels, confirming the effectiveness of the proposed solution. Furthermore, traditional analytical models, typical of steel prestressed structures, can be effectively extended to GFRP prestressed elements. The theoretical loads are comparable to the experimental ones, with errors lower than 3%, on the safe side.
Short-Term and Long-Term Performance of Precast HPC Sheet-Piles Prestressed with GFRP Bars
https://orcid.org/http://orcid.org/0000-0001-6480-4399
https://orcid.org/http://orcid.org/0000-0003-0895-0804
Aim of this research is to replace the traditional steel strands with new composite Glass Fiber Reinforced Polymer (GFRP) bars for the prestressing of precast High-Performance Concrete (HPC) sheet-piles.
The use of prestressing combined with non-corrosive rebars could be a good solution in all those cases in which highly aggressive environments can quickly jeopardize the functions of the structure. The prototype of the present study should be able to exploit the main advantages of the solutions currently available on the market, guaranteeing high durability and performance capacity and, last but not least, looking to sustainability of the next generation of RC structures.
Analytical considerations and experimental full-scale bending tests were carried out on young and 3-years old sheet-piles for which short-term and long-term behavior was accounted for.
The analysed prototype was pretensioned with GFRP bars to an initial stress at jacking equal to 46% of the characteristic ultimate strength while, at transfer stage, the stress on the GFRP bars stood at 35% one, substantially greater than the Codes provisions.
Based on the results obtained in the study, it can be concluded that a prestressing up to 46% of the GFRP bars ultimate capacity did not show any signs of adverse effects due to the high prestressing levels, confirming the effectiveness of the proposed solution. Furthermore, traditional analytical models, typical of steel prestressed structures, can be effectively extended to GFRP prestressed elements. The theoretical loads are comparable to the experimental ones, with errors lower than 3%, on the safe side.
Short-Term and Long-Term Performance of Precast HPC Sheet-Piles Prestressed with GFRP Bars
Lecture Notes in Civil Engineering
Ilki, Alper (editor) / Çavunt, Derya (editor) / Çavunt, Yavuz Selim (editor) / Spagnuolo, Simone (author) / Rinaldi, Zila (author)
International Symposium of the International Federation for Structural Concrete ; 2023 ; Istanbul, Türkiye
2023-06-03
10 pages
Article/Chapter (Book)
Electronic Resource
English
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