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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: Concrete Strength Variation in Actual Structures
Author(s): W. K. Tso and I. M. Zelman
Publication: Journal Proceedings
Appears on pages(s): 981-988
Keywords: coefficient of variation; columns (supports) ; compressive strength; concretes; probability theory; reinforced concrete; reliability; statistical analysis; tolerances (mechanics) ; ultrasonic tests.
Abstract:Field testing of 403 concrete columns in 10 buildings was made to study the concrete strength variation of columns in actual structures. The ultrasonic testing method was used. Means and standard deviations of the data were computed on a per building basis. An additional 12 columns were cast in the laboratory and tested both for pulse velocity variation and concrete strength variation. The concrete strength variation of the field tested columns was then inferred from the results of the laboratory tested specimens.
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