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The diameter-compression test for small diameter cores

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Abstract

A new method, diameter-compression testing, is evaluated for application in concrete core testing. The method uses a special compression apparatus to test concrete cores that require no further preparation after removal from the structure. This paper examines the results of a laboratory investigation in which over 600 cores with diameters of 55 mm were drilled and tested. The influence of total length and compressed length of concrete cores on the test index is examined. A simple linear relationship between cube strength and the diameter-compression strength was observed. The variability and accuracy of the new method for small cores were obtained and compared with those of conventional compression testing. It is argued that this new method offers a practical alternative to the conventional compression testing of cores.

Résumé

On évalue une nouvelle méthode, l'essai de compression diamétrale, afin de l'appliquer à l'essai de carottes en béton. Cette méthode se pratique avec un appareillage spécial qui ne demande pas de préparation ultérieure après le carottage. On examine ici les résultats d'une étude de laboratoire portant sur plus de 600 carottes d'un diamètre de 55 mm. On évalue l'influence de la longueur totale et de la longueur des carottes comprimées sur la valuer de l'index de l'essai en compression. On observe une relation linéaire simple entre la résistance du cube et la résistance à la compression diamétrale. On compare la variabilité et la précision obtenues par cette méthode pour de petites carottes avec celles offertes par l'essai conventionnel. On démontre que cette nouvelle méthode constitue une alternative à l'essai conventionnel de carottes.

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Ruijie, L. The diameter-compression test for small diameter cores. Mat. Struct. 29, 56–59 (1996). https://doi.org/10.1007/BF02486007

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  • DOI: https://doi.org/10.1007/BF02486007

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