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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: 228.1R-95: In-Place Methods for Determination of Strength of Concrete
Publication: Technical Documents
Appears on pages(s): 41
Keywords: testing-nondestructive testing
Abstract:Note: A newer version of this document exists. This document was replaced by 228.1R-03.
Guidance is provided on the use of methods to estimate the in-place strength of concrete in new and existing construction. The methods include: rebound hammer, penetration resistance, pullout, break-off, ultrasonic pulse velocity, maturity, and cast-in-place cylinder. The principle inherent limitations of each method are reviewed. Procedures are presented for developing the relationship needed to estimate compressive strength from in-place tests are discussed, and statistical techniques to interpret test results are presented. The use of in-place tests for acceptance of concrete is introduced. The appendix provides information on the number of strength levels that should be used to develop the strength relationship and explains a regression analysis procedure that account for error in the independent variable.
Note: A newer version of this document exists. This document was replaced by 228.1R-03.