Abstract
This paper describes a number of statistical methods to estimate, through an analysis of in-place test results, the in-place compressive strength of concrete expressed as strength of standard specimens. The evaluation of the probable existence of a linear correlation as a function of sample size is discussed. The regression laws and the degree of reliability of the estimates obtained is also discussed. A criterion is proposed for the choice of the number of points to be used in the regression. Finally a method is proposed, knowing the numberm of replicated in-place tests, to estimate the equivalent numbern of replicated tests performed on standard specimens.
Résumé
Cet article présente diverses méthodes statistiques qui permettent, par le biais de l'analyse des résultats d'essais śinsitu’, l'estimation de la résistance du béton exprimée comme résistance sur échantillons standard. Il est procédé à l'évaluation de l'existence probable d'une corrélation linéaire en fonction de la taille de l'échantillon. Il est procédé à l'analyse des lois de régression, ainsi que du niveau de fiabilité des estimations obtenues. Il est proposé un critère pour l'évaluation du nombre de points à employer dans la régression. Enfin, il est proposé une méthode qui permet, pour un nombrem d'essais répétés selon les méthodes non-destructives, d'estimer le nombren équivalent d'essais répétés sur échantillons standard.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
BS 1881, Part 201, Guide to the use of non destructive methods of test for hardened concrete, British Standard Institution, London, 1986.
ACI Committee 228, In-Place Methods to Estimate Concrete
Malhotra, V. M., ‘In Situ/Non-destructive Testing of Concrete. A Global Review, In Situ/Non-destructive Testing of Concrete’, SP82, American Concrete Institute, Detroit, 1984, pp. 1–16.
Neville, A. M., ‘Properties of Concrete’, 4th edn., Longman, Harlow, Essex, 1995, pp. 631–633.
Murphy, W. E., ‘The Interpretation of Tests on the Strength of Concrete in Structures, In Situ/Non-destructive Testing of Concrete’, SP82, American Concrete Institute, Detroit, 1984, pp. 377–392.
Indelicato, F., ‘Estimate of concrete cube strength by means of different diameter cores: A statistical approach’,Mater. Struct. 30 (April 1997) 131–138.
Benjamin, J. R. and Cornell, C. A., ‘Probability Statistics and Decision for Civil Engineers’, McGraw-Hill, New York, 1970, pp. 466–475.
Leshchinsky, A. M., ‘Non-destructive testing of concrete strength: statistical control’,Mater. Struct. 25 (March 1992) 70–78.
Hindo, K. R. and Bergstrom, W. R., ‘Statistical evaluation of inplace strength of concrete’,Concrete International: Design and Construction 7 (2) (Feb. 1985) 44–48.
Stone, W. C. and Reeve, C. P., ‘New statistical method for prediction of concrete strength from in-place tests’,ASTM Journal of Cement, Concrete and Aggregates 8 (5) (Summer 1986) 3–12.
Carino, N. J., ‘Statistical Methods to Evaluate In-Place Test Results, New Concrete Technology’, SP 141, American Concrete Institute, Detroit, 1993, pp. 39–64.
Saporta, G., ‘Probabilités-Analyse des Données et Statistiques’, Éditions Technip, Paris, 1990, pp. 131–137.
Mandel, J., ‘Fitting straight lines when both variables are subject to error’,Journal of Quality Technology 16 (January 1984) 1–14.
Indelicato, F., ‘A Proposal for the prediction of the characteristic cube strength of concrete from tests on small cores of various diameters’,Mater. Struct. 31 (May 1998) 242–246.
ACI Committee 228, In-Place Methods for Determination of Strength of Concrete (ACI 228.1R-89), American Concrete Institute, Detroit, 1989.
Author information
Authors and Affiliations
Additional information
Editorial Note Prof. F. Indelicato is a RILEM Senior Member.
Rights and permissions
About this article
Cite this article
Indelicato, F. In-place compressive strength of concrete: statistical methods to evaluate experimental data. Mat. Struct. 32, 394–399 (1999). https://doi.org/10.1007/BF02479633
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02479633