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Evaluation of High Strength Concrete by the Break-Off Method

by Tarun R. Naik, Univ of Wisconsin - Milwaukee, United States,
Ziad Salameh, Univ of Wisconsin - Milwaukee, United States,



Document Type: Proceeding Paper

Part of: Serviceability and Durability of Construction Materials

Abstract:

The reliability of the Break-Off method to test inplace high-strength concrete is investigated. A total of 188 Break-Off tests and 30 standard cylinder tests are carried out for this project. Analysis of the results show that Break-Off test readings have a higher variability than the standard cylinder test readings. The accuracy of the Break-Off test method is not affected by the aggregate shape, the slab thickness nor the type of specimen. Also, the aggregate shape and the slab thickness do not affect the Break-Off test reading. However, the specimen type (sleeve or drilled) does affect the Break-Off reading. This study confirms that the Break-Off test method is accurate for testing in-situ strength of concrete as reported by other researchers.

Subject Headings: Field tests | High-strength concrete | Material tests | Compressive strength | Strength of materials | Aggregates | Slabs

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