TY - GEN
T1 - Experimental Bond Performance of Fibre Reinforced Polymer Prestressed Concrete Elements
AU - Oller, Eva
AU - Ortiz, Galo
AU - Prazeres, Nuno Várzea
AU - Murcia-Delso, Juan
AU - Marí, Antonio
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2023
Y1 - 2023
N2 - In pretensioned prestressed concrete elements, bond between reinforcement and concrete differs is fundamental for a safe design. The so-called Hoyer effect, produced by the lateral expansion of a material when subjected to load, increases the bond resistance, but it also increases the circumferential stresses and then, the risk of cracking due to the tendon expansion. The bond behaviour of FRP tendons has not been studied in depth. To study the bond performance of FRP tendons, and characterize the transfer and flexural development length, an experimental program was carried out. This program was based on a setup called ECADA developed for steel tendons by the Universidad Politécnica de Valencia. The test specimen represents the anchorage area of the tendon and the remaining part of the theoretical beam is substituted by an anchorage measurement access system that has the same rigidity of the replaced part. The test starts by prestressing from one side and after concreting, the prestressed force is released gradually, then the transfer length is measured. Afterwards, the tendon is pulled from the other side, and the total development length is determined iteratively by producing samples of different lengths. The results of the ECADA tests have indicated that the transfer lengths of the FRP tendons being studied lie within 100 and 300 mm.
AB - In pretensioned prestressed concrete elements, bond between reinforcement and concrete differs is fundamental for a safe design. The so-called Hoyer effect, produced by the lateral expansion of a material when subjected to load, increases the bond resistance, but it also increases the circumferential stresses and then, the risk of cracking due to the tendon expansion. The bond behaviour of FRP tendons has not been studied in depth. To study the bond performance of FRP tendons, and characterize the transfer and flexural development length, an experimental program was carried out. This program was based on a setup called ECADA developed for steel tendons by the Universidad Politécnica de Valencia. The test specimen represents the anchorage area of the tendon and the remaining part of the theoretical beam is substituted by an anchorage measurement access system that has the same rigidity of the replaced part. The test starts by prestressing from one side and after concreting, the prestressed force is released gradually, then the transfer length is measured. Afterwards, the tendon is pulled from the other side, and the total development length is determined iteratively by producing samples of different lengths. The results of the ECADA tests have indicated that the transfer lengths of the FRP tendons being studied lie within 100 and 300 mm.
KW - FRP prestresssed concrete
KW - FRP pretensioned
KW - FRP tendons
KW - bond tests
KW - flexural development length
KW - transfer length
UR - https://www.scopus.com/pages/publications/85163976314
U2 - 10.1007/978-3-031-32519-9_114
DO - 10.1007/978-3-031-32519-9_114
M3 - Conference contribution
AN - SCOPUS:85163976314
SN - 9783031325182
T3 - Lecture Notes in Civil Engineering
SP - 1133
EP - 1142
BT - Building for the Future
A2 - Ilki, Alper
A2 - Çavunt, Derya
A2 - Çavunt, Yavuz Selim
PB - Springer Science and Business Media Deutschland GmbH
T2 - International Symposium of the International Federation for Structural Concrete, fib Symposium 2023
Y2 - 5 June 2023 through 7 June 2023
ER -