SYMPOSIA PAPER Published: 01 January 1985
STP33795S

The Effect of Strain Rate on the Stress Corrosion Cracking of Steels for Prestressing Concrete

Source

The aim of the paper is to investigate the stress corrosion cracking behavior of prestressing steels under general practical conditions. An aqueous solution of calcium hydroxide with small additions of sodium chloride has been used, the pH being 12.5 and the potential −0.6-V standard calomel electrode (SCE) as well as −1.2-V (SCE). Both tension tests at constant load and constant strain rate have been performed on specimens precracked by fatigue. The experimental results show that the constant load test, as proposed by the Prestressing International Federation (FIP), may be improved by the constant slow strain rate test in a realistic environment, needing a smaller number of tests and showing that in some cases fractures happen at stress intensity factor K1 values below the stress intensity threshold factor KISCC value as determined by a constant load test.

Author Information

Sánchez Gálvez, V
E. T. S. Ingenieros de Caminos, Universidad Politecnica de Madrid, Madrid, Spain
Caballero, L
E. T. S. Ingenieros de Caminos, Universidad Politecnica de Madrid, Madrid, Spain
Elices, M
E. T. S. Ingenieros de Caminos, Universidad Politecnica de Madrid, Madrid, Spain
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Details
Developed by Committee: G01
Pages: 428–436
DOI: 10.1520/STP33795S
ISBN-EB: 978-0-8031-4931-1
ISBN-13: 978-0-8031-0443-3