Title: 228.1R-89: In-Place Methods for Determination of Strength of Concrete

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Publication: Technical Documents

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Appears on pages(s): 26

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DOI:

Date: 1/1/1989

Abstract:

Note: 228.1R-89 is Out of Print. However, a newer version of this document exists. This document was replaced by 228.1R-95.

The state-of-the art in the use of methods for determining the in-place compressive strength of concrete is reported. The methods covered include the rebound hammer, prove penetration, pull-out, ultrasonic pulse velocity, maturity, and cast-in-place cylinder. The underlying principes and inherent limitations of each method are discussed. Repeatability of test results is reviewed, and recommendations are given for developing the correlation relationship for each test method. Recommendations are given for the number of tests, and statistical techniques for interpretation of test results are described.