Abstract
The creep function of ageing concrete has been expressed as the function not only of load duration but of time from the instant of set of concrete and age at loading. However, it is not rational in some case of creep analysis to use such a creep function because creep substantially depends on the degree of hydration rather than the age. The purpose of this paper is to introduce the parameter indicating the degree of hydration into the creep function and to propose a suitable form of creep function. Based on both creep function of non-ageing (very old) concrete proposed in our previous paper and theory of the solidifying porous material proposed by Z. P. Bazant, the creep function of ageing concrete was obtained in this paper.
