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By Fred Goodwin, BASF Construction Chemicals, Inc.
Presented at SSPC 2015; Session: Mini Session: Corrosion in Concrete; Session chair: Bob Murphy, The Sherwin-Williams Company
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Concrete is the second most common man-made material after potable water yet it is a complex material that is poorly understood. Steel reinforcement is added to improve concrete's tensile strength and ductility and it is initially protected by the high pH and depth of cover concrete. Eventually, due to the ingress of deleterious ions, lowering of the pH from carbonation, or electrical potential changes around the steel, corrosion will occur. Steps can be taken throughout the concrete life cycle to minimize this damage through prevention, protection, or mitigation of corrosion. This presentation will discuss the properties of concrete, the causes of concrete damage and deterioration, issues related to corrosion of reinforcing steel in concrete, and options to evaluate and reduce the effects of concrete deterioration.
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