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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: The Evaluation and Acceptance of Concrete Quality by In-Place Testing
Author(s): J.A. Bickley
Publication: Special Publication
Appears on pages(s): 95-110
Keywords: acceptability; compressive strength; concretes; form removal; inserts; nondestructive test; post-tensioning; pullout tests; quality control; statistical anlysis.
Abstract:The standard method of determining the quality of hardened concrete is the cylinder test. Unliess test results fail to meet specified values, and other test procedures are called into play, the standard cylinder test is usually the only quantitative measure of the quality of concrete in a structure. Analysis of test results to ACI 214 enables assessments of this quality to be made. On two large projects in Toronto, horizontal elements were extensively test4d by in-place testing for form removal, termination of shring, and confirmation of specified 28-day strength. Permission to waive standard cylinder testing for these elemnets was obtained from trhe City Building Department. Out of interest the cylinders were made and tested. It is therefore possible to evaluate the quality of the concrete on these projects by both the standard procedure, and by in-place testing. This is addressed in this paper together with a discussion of statistical evaluation of in-place test data.
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