A Study on Deterioration of Flexural Behaviour of Corroded Pre- tensioned Beams

Author(s): G. Resmi, Amlan K. Sengupta and Radhakrishna G. Pillai
Paper category: Proceedings
Book title: Proceedings of the 71st RILEM Annual Week & ICACMS 2017,Chennai,India, 3rd -8th September 2017
Editor(s): Manu Santhanam
Ravindra Gettu
Radhakrishna G. Pillai
Sunitha K. Nayar
ISBN: 978-2-35158-196-4
ISBN: 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9:
Publisher: Published by RILEM Publications S.A.R.L.
Publication year: 2017
Pages: 238-247
Total Pages: 10
Language : English

Abstract: The present study investigates the effect of chloride induced corrosion of the strands on the
flexural capacity and behaviour of pre-tensioned precast bridge girders. An experimental
programme is conducted to determine the change in behaviour of pre-tensioned beam
specimens subjected to artificial corrosion of the strands. Artificial corrosion of the strands is
induced by the impressed current method. The parameters selected for the experimental study
are the amount of initial prestress and the amount of corrosion. The corroded beam specimens
are tested under four-point static bending to record the moment versus average curvature
behaviour of the test region. To estimate the amount of corrosion, X-Ray Computed
Tomography (CT) scanning is utilised in getting three dimensional scanned images of the
corroded strands, extracted after the flexural tests of the specimens. The paper provides the
adopted procedures for manufacturing of the specimens, corrosion and CT scanning of the
strands, and flexural testing of the specimens. The results obtained from the preliminary tests
are reported. The consolidated results from the experimental programme will be used to
estimate the time-variant flexural capacity and behaviour of pre-tensioned bridge girders of a
newly constructed expressway.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00