The San Fernando Valley Chapter of ASM International Welcomes:
Behzad Bavarian, Ph.D.
Professor
Manufacturing Systems Engineering and Management
California State University, Northridge
Presenting
Improving the Durability of Reinforced Concrete Structures Using Mitigating Corrosion Inhibitors
Abstract
Corrosion is one of the primary concerns in the durability of materials and structures. Research efforts have been made to find a corrosion inhibition process to prolong the life of existing structures and minimize corrosion damage in new structures. Migrating Corrosion Inhibitor technology was developed to protect the embedded steel rebar/concrete structure. In this talk, the focus will be transportation/marine-based infrastructure built from steel and concrete. The steel may be in structural sections, such as girders, piles, or rails, or embedded rebars in concrete to form reinforced or prestressed concrete. Concrete provides excellent protection for embedded steel because Portland cement is very alkaline, forming a passive, protective layer on the steel surface. Concrete is also permeable, and even good-quality concrete can be penetrated by aggressive chemical ions that may initiate steel corrosion. Migrating corrosion inhibitors (MCIs), a blend of amine carboxylates and amino alcohols, show versatility as admixtures, surface treatments (coatings), and in rehabilitation programs. In this presentation, it will be reaffirmed that the most cost-efficient method is the use of migrating corrosion inhibitor admixtures to improve the durability of reinforced steel concrete structures in aggressive environments.
The corrosion of steel rebar/concrete structures in aggressive marine environments is a complex problem when considering the building and maintenance of concrete structures. Despite the substantial efforts that have been made, corrosion in marine environments for concrete structures remains a highly challenging subject. The presence of chlorides and sulfates in the marine environment can diffuse into the concrete and ultimately cause cracking and a corrosion attack due to chlorides, which can lead to the disintegration of concrete, strength loss, and failure of the structure before its predicated life. In this investigation, the application of the MCIs on concrete structures will be discussed to understand and improve the resistance to corrosion by chlorides.
Bio
Undergraduate instruction in Manufacturing Systems Engineering and graduate instruction in Materials Engineering. Recipient of University Distinguished Teaching Award, College Outstanding Faculty Award, Don Dorsey Mentoring Award, and San Fernando Valley Engineers Council Distinguished Engineering Achievements. Director of Advanced Materials Laboratory and the Advanced Corrosion Laboratory. Director of the award-winning Materials Engineering Undergraduate Research Program. Publishes and presents papers extensively, providing many opportunities for his undergraduate and graduate students.
Education
- Ph.D. 1980, The Ohio State University
- M.S. 1977, The Ohio State University
- B.S. 1976, Tehran University
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