Abstract
This article describes how the time required to quantitatively assess the corrosion performance of steel embedded in concrete can limit the introduction of new materials and systems into the market to extend the life of reinforced concrete structures that have been exposed to corrosive environments. Many state and federal highway agencies, public utilities and infrastructure developers are aggressively pursuing corrosion protection methods for reinforced concrete structures. New test methods that can quickly provide quantitative results for assessing corrosion resistance are needed. Results from a research program that assessed the influence of exposure environment on the time to corrosion of steel embedded in concrete following the ASTM G109 test procedures are presented in the article. The results indicate that the modified test can provide quantitative results for reinforced concrete specimens containing different materials and that increasing the temperature and humidity reduces the time to initiation of corrosion. However, the reduction in time is not significant for specimens containing materials that resist corrosion, and increasing the temperature and humidity is not sufficient to generate results over reasonable durations.
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