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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: Pullout Technique -An Additional Tool for In Situ Concrete Strength Determination
Author(s): L.M. Khoo
Publication: Special Publication
Appears on pages(s): 143-160
Keywords: compressive strength; concrete cores; concretes;
nondestructive tests; pullout tests; quality control.
Abstract:This paper presents the results of investigation on a pullout technique for the determination of in-situ strength of concrete. In essence, a pullout test consists of measuring the force required to pull out a specially shaped inserts whose enlarged end has been cast into the concrete. In this investigation, pullout tests were performed on 6OO-mm cubical concrete blocks. Compression strength tests were conducted on standard 15O-mm cubes and also on 1 00 x 200-mm cores drilled from the 6OO-mm blocks. Statistical analysis of the test data shows that there is a good correlation between the pullout strength and the corresponding compressive strength of cubes and cores. The test is simple, inexpensive, effective and has an acceptable degree of reproducibility. It has the potential to be a useful additional tool for in-situ quality control of concrete.
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