Effect of Reduced Bond of Prestressed Strands

Abstract:

Bond of prestressing strands may be reduced by using protective coatings against corrosion during winter period, when early grouting of ducts may be impossible. It was not verified if the reduced bond has an influence on the performance of the post-tensioned structures. The experimental program was prepared, which investigated the bond of prestressing strands without protection and with two types of protective coatings. The program had two parts, laboratory pull-out tests and bending tests of large post-tensioned beams. The paper presents the results of this experimental program.

• Periodical: Solid State Phenomena (Volume 249)
• Pages: 296-300
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.249.296
• Online since: April 2016
• Authors: Jan L. Vítek*, David Čítek
• Keywords: Bond, Concrete, Experiment, Prestressed Strands, Pull-Out Test

References

[1] Laco, J., Borzovič, V., Pažma, P.: Investigation of bond influence of seven wire strands on behaviour of post-tensioned two span girders. Concrete – Technology, Construction and Rehabilitation, (Beton TKS), Vol. 15, 2/2015, 55-59.