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Title: How Good is Good Enough-A Dilemma in Acceptance Testing of Concrete

Author(s): H. W. Chung

Publication: Journal Proceedings

Volume: 75

Issue: 8

Appears on pages(s): 374-380

Keywords: acceptability; building codes; compressive strength: concretes; mix proportioning; quality control.

DOI: 10.14359/10951

Date: 8/1/1978

Compliance with concrete strength level requirements is usually judged by an acceptance test. The criteria of acceptance stipulated in ACI 3 18- 71, as well as the British and Australian codes, are reviewed and their efficiencies are compared by means of the operating characteristic curves. It is shown that the ACI 3 18-71 criteria involve a low producer’s risk but a very high consumer’s risk, with the effect that "good" concrete is always accepted but "poor" concrete may not be detected. A revision of the criteria is proposed whereby the risk is distributed more evenly between the two parties.


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