A Reactive Transport Model For Evaluating
The Long-term Performance Of Stainless Steels
In Concrete
Author(s)
M. Boulfiza
Abstract
One significant challenge facing the world today is the decay of infrastructure.
A major component of infrastructure decay is the degradation of bridges and
highways due to corrosion of the embedded reinforcing steel. This problem has
prompted the development of a variety of alternative strategies for increasing the
service life of reinforced concrete structures exposed to harsh environments.
Over the last two decades, many advanced metallic and non-metallic materials
have been developed for withstanding severe corrosion typically encountered in
concrete bridge decks. However, adoption of these materials by industry has
fallen far short of initial expectations, due in a large extent to a lack of tools to
evaluate their long term in-service performance. At present, very little reliable
information is available for evaluating the corrosion performance of advanced
reinforcement materials available in the market for bridge decks over the entire
service life of the structure. Based on first principles, a comprehensive reactive
transport model is proposed in this study for predicting the occurrence of general
and localized corrosion in concrete bridge decks. Preliminary results show
excellent agreement with experimental data under various environmental
conditions.
Keywords: corrosion, stainless steel, concrete, bridge deck, reactive transport,
modelling, service life.
1 Introduction
The cost of protecting and restoring concrete structures worldwide is a large and
growing problem (>$100 billion/yr). A major component of infrastructure decay
is the degradation of bridges and highways due to corrosion of the embedded
Keywords
corrosion, stainless steel, concrete, bridge deck, reactive transport,
modelling, service life.
Related Book
Other papers in this volume
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