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Phenomenological investigation of concrete deterioration in a median barrier

✍ Scribed by Shondeep L. Sarkar; Pierre-Claude Aïtcin

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
946 KB
Volume
21
Category
Article
ISSN
0008-8846

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✦ Synopsis

This paper discusses the findings from an investigation of a deteriorated reinforced concrete median barrier in Sherbrooke, Quebec, Canada.

The barrier has been subjected to repeated freezing and thawing, deicer salts and exhaust fumes for a number of years.

The study based on field samples, focuses attention on the combined effect of physical and chemical deterioration in terms of the long-term performance and durability of a reinforced concrete element under severe conditions. Various types of deterioration were revealed using techniques such as SEM, XRDA, CI-ion permeability and mercury porosimetry.

The most prevalent signs of deterioration were map cracking, longitudinal cracking, rebar corrosion, scaling, and spalling, which are related to microstructural and physicochemical phenomena.

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