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.
Similar content being viewed by others
References
Henzel, J. and Freitag, W., ‘The determination of the compressive strength of concrete in a structure with the aid of test cores of Small Diameter’,Beton 19, No. 4 (April 1969), 151–155.
Bungey, J.H., ‘The Testing of Concrete in Structure’, 1st edn. (Surrey University Press, New-York, 1982).
Day, R.I., Haque, M.N., ‘Correlation between Strength of Small and Standard Concrete Cylinders’,ACI Material Journal,90, No. 5 (Sept.–Oct. 1993).
Korshunov, D.A. and Vidorenko, M.V., ‘Methods for Determining the Strength of Concrete’,Materials and Structures RILEM,25, No. 145 (Jan.–Feb. 1992).
Robins, P.J., ‘The Point-Load Test for Concrete Cores’,Magazine of Concrete Research,32, No. 111 (June 1980), 101–111.
Young, F.J. and Mindness, S., ‘Concrete’ (Prentice-Hall Inc., 1981).
Unksov, I.P., ‘Engineering Computation Method for Forming Force of Metals’, Moscow Machine Press, 1955 (in Russian).
Concrete Society Technical Report No. 11, ‘Concrete Core Testing for Strength’ (Concrete Society, London, 1976).
Bungey, J.H., ‘Determining Concrete Strength by Using Small-Diameter Cores’,Magazine of Concrete Research,31, No. 107 (June 1979), 91–98.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ruijie, L. The diameter-compression test for small diameter cores. Mat. Struct. 29, 56–59 (1996). https://doi.org/10.1007/BF02486007
Issue Date:
DOI: https://doi.org/10.1007/BF02486007