Estimation of Concrete Strength by Combined Nondestructive Testing Method


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Title: Estimation of Concrete Strength by Combined Nondestructive Testing Method

Author(s): Yasuo Tanigawa, Kenji Baba, and Hiroshi Mori

Publication: Special Publication

Volume: 82


Appears on pages(s): 57-76

Keywords: compressive strength; concretes; impact hammer tests; nondestructive tests; regression analysis; ultrasonic tests.

Date: 9/1/1984

The purpose of the present paper is to obtain a practical expression for estimating the compressive strength of concrete the nondestructive testing method combining rebound number evaluation of the -I L L .n strength of concrete members or structures. with ultrasonic pulse velocity and to discuss its applicability to Experimental investigations were carried out to examine the effects of factors such as water-cement ratio, the maximum size and volume fraction of coarse aggregate, the curing condition and age of concrete. Accuracies of the prediction expressed in concrete strength are proposed. The equations are applied for empirical formulae are examined by multiple and practical equations for estimating the evaluating the-strength distribution in a concrete column and in an existing concrete building.


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