Chapter
Apr 26, 2012
Experimental Study on Bending Behavior of Corroded Post-Tensioned Concrete Beams
Authors: Y. H. Zeng [email protected], Q. H. Huang [email protected], X. L. Gu [email protected], and W. P. Zhang [email protected]Author Affiliations
Publication: Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Nine post-tensioned concrete (PC) beams were made and corroded by impressing direct current to them. The influences of different factors, such as the corrosion ratio of prestressing tendons, grouting condition etc., were taken into consideration. The failure modes and mechanism of corroded PC beams were investigated by monotonic loading tests. The experimental results showed that the higher the corrosion ratio of prestressing tendons is the lower the cracking, yielding and ultimate capacities of the PC beams will be. With the development of the corrosion of prestressing tendons, the characteristics of load-deflection curves of PC beams are no longer similar with that of uncorroded PC beams, but turn into that of reinforced concrete beams. The prestressing tendons will be easier to corrode for a beam with bad grouting condition, and the corrosion will lead to severe deterioration of the bond strength between concrete and prestressing tendons that will greatly reduce the stiffness of the beam.
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Published In
Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Pages: 3521 - 3528
Copyright
© 2010 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Affiliations
Department of Building Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. E-mail: [email protected]
Department of Building Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. E-mail: [email protected]
Department of Building Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. E-mail: [email protected]
Department of Building Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China. E-mail: [email protected]
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