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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Surface Condition Effects on Critical Chloride Threshold of Steel Reinforcement
Author(s): Radhakrishna G. Pillai and David Trejo
Publication: Materials Journal
Appears on pages(s): 103-109
Keywords: corrosion; mill scale; steel reinforcement
Abstract:To evaluate the influence of the steel reinforcement surface condition on the corrosion performance, the critical chloride threshold values of five uncoated steel reinforcement types (ASTM A 706, ASTM A 615, microcomposite, stainless steel 304, and stainless steel [SS] 316LN) with as-received and polished surface conditions were quantitatively determined using the accelerated chloride threshold (ACT) test procedure. Micrographs of the surfaces for all steel reinforcement types were obtained using both optical and scanning electron microscopy (SEM). This qualitative assessment was correlated with critical chloride threshold values. This study indicated that the mean critical chloride threshold values increased with the complete removal of the as-received surface and with surface polishing for the ASTM A 706, microcomposite, and stainless steel 304 reinforcements and decreased with the complete removal of the as-received surface and with surface polishing of the ASTM A 615 and SS316LN steels.
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