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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: Resistivity Tests for Concrete—Recent Field Experience
Author(s): Jagan Gudimettla and Gary Crawford
Publication: Materials Journal
Appears on pages(s): 505-512
Keywords: bulk resistivity; rapid chloride permeability test; surface resistivity
Abstract:This paper analyzed surface resistivity (SR), bulk resistivity (BR), and rapid chloride permeability test (RCPT) data collected from 11 concrete paving field projects from across the country. The data showed that the results from the three tests correlate well and confirms the work performed by previous research on laboratory samples. However, the data indicates that care should be taken when using 28-day SR data in lieu of 56-day RCPT data because they may not correlate well for all mixtures.
Depending on the project, the coefficient of variation (COV) for SR and BR for production samples ranged from 5% to 25% with an average of 13% and 12%, respectively. The SR and BR COVs for all the projects were lower than the COV of RCPT. Data showed little to no correlation between 56-day SR with fresh concrete properties and 28-day compressive strength.
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