Experimental Study on Bending Behavior of Corroded Post-Tensioned Concrete Beams

2010 ◽  
Author(s):  
Y. H. Zeng ◽  
Q. H. Huang ◽  
X. L. Gu ◽  
W. P. Zhang
Keyword(s):  
Experimental Study ◽  
Concrete Beams ◽  
Bending Behavior ◽  
Post Tensioned

An Experimental Study on the Flexural Behavior of Post-Tensioned Concrete Beams with CFRP Tendons

2013 ◽  
Vol 351-352 ◽  
pp. 717-721 ◽  
Author(s):  
Woo Tai Jung ◽  
Jong Sup Park ◽  
Young Hwan Park
Keyword(s):  
Experimental Study ◽  
Ultimate Load ◽  
Concrete Beams ◽  
Concrete Structures ◽  
Flexural Behavior ◽  
Flexural Performance ◽  
Jacking Force ◽  
Post Tensioned

The exploitation of FRP tendon necessitates not only to improve the performances of the FRP tendon and anchoring device but also to examine its structural performances by applying it to various structures like concrete structures. This study applies CFRP tendon on internally and externally post-tensioned concrete specimens so as to observe their flexural performance considering the number of tendons and jacking force as test variables. The tests show that the externally post-tensioned specimens undergo lesser cracks with wider distribution of the cracks than the internally post-tensioned specimens with similar jacking force. In addition, the externally post-tensioned specimens with larger number of saddles experience smaller number of cracks with larger distribution. The specimens without saddle and the internally post-tensioned specimens with the same jacking force exhibit similar behavior until the yielding of the reinforcement to show different behaviors from the time at which the eccentricities of the tendons start to vary after yielding. The externally post-tensioned specimens with saddle provide increased crack load compared to the specimens without saddle, with an increase of approximately 25% of the ultimate load.

scholarly journals Experimental Study on the Torsional Behaviour of Prestressed HSC Hollow Beams

2020 ◽  
Vol 10 (2) ◽  
pp. 642 ◽  
Author(s):  
Luís Bernardo ◽  
Sérgio Lopes ◽  
Mafalda Teixeira
Keyword(s):  
Experimental Study ◽  
High Strength Concrete ◽  
Concrete Beams ◽  
Concrete Strength ◽  
High Strength ◽  
Experimental Program ◽  
Pure Torsion ◽  
Strength Concrete ◽  
Hollow Beams

This article describes an experimental program developed to study the influence of longitudinal prestress on the behaviour of high-strength concrete hollow beams under pure torsion. The pre-cracking, the post-cracking and the ultimate behaviour are analysed. Three tests were carried out on large hollow high-strength concrete beams with similar concrete strength. The variable studied was the level of longitudinal uniform prestress. Some important conclusions on different aspects of the beams’ behaviour are presented. These conclusions, considered important for the design of box bridges, include the influence of the level of prestress in the cracking and ultimate behaviour.

Experimental study of the post tensioned prestressed concrete corbels

2016 ◽  
Vol 108 ◽  
pp. 1-11 ◽  
Author(s):  
Małgorzata Lachowicz ◽  
Krystyna Nagrodzka-Godycka
Keyword(s):  
Experimental Study ◽  
Prestressed Concrete ◽  
Post Tensioned
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