Abstract
The aim of this study is to compare the compressive strength determined by weight maturity method in dam concretes with compressive strength obtained from fresh concrete and core samples. Within the scope of the study, normal concretes of C25/30 strength class were produced. Samples were taken from ø15x30 cm cylinder molds from normal concrete mixtures having maximum aggregate grain diameter (Dmax) of 25 mm.In this study, the estimated compressive strengths were measured by using a maturity device and the compressive strengths obtained from samples taken from fresh concrete and core samples taken from hardened concrete were measured at close values. In this context, instead of taking samples from fresh concrete and concrete productions, it was concluded that the pressure resistance measurements made by using a maturity device in fresh concrete are reliable.
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