Conclusions
-
1.
The nonuniform variation of concrete strength with age decreases with more rapid hardening of concrete of lower strength.
-
2.
With a known regression relation between the strengths at different ages, it is possible, from a selection for the carliest age, to calculate the strength distribution parameters at any subsequent age.
-
3.
For a small variability of the initial strength (in the writers' tests, for V0<10%), use should be made of the mean value of the coefficient of transfer from the initial strength to the strength at a later age. In this case the coefficient of variation with age does not change and remains equal to the initial coefficient.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Literature Cited
V. V. Stol'nikov, A. S. Gubar', and V. B. Sudakov, Effect of the Age of Concrete on Its Basic Technical Properties [in Russian], Gosénergoizdat, Moscow (1960).
S. A. Aivazyan, Statistical Investigation of Relations [in Russian], Metallurgiya, Moscow (1968).
Additional information
From the Editors. The effect of the age of concrete on the coefficient of variation continues to be a debatable problem, since as the mean strength increases (increase in the age), the coefficient of variation decreases; at the same time, the structural compaction with age, mentioned by the authors, cannot increase the uniformity so much that the uniformity is not affected by the increase of the mean strength with age.
From tests carried out at the Ust'-Ilim hydroelectric plant.
Translated from Gidrotekhnicheskoe Stroitel'stvo, No. 11, pp. 10–13, November, 1974.
Rights and permissions
About this article
Cite this article
Sadovich, M.A., Danilenko, E.L. Effect of age on nonuniformity of the strength of concrete. Hydrotechnical Construction 8, 1014–1017 (1974). https://doi.org/10.1007/BF02380407
Issue Date:
DOI: https://doi.org/10.1007/BF02380407