ABSTRACT
RCC dam construction methodology, by concrete layers, involves a high number and an extensive area of horizontal joints. These joints are the weakest part of RCC in terms of strength and permeability, being one hindrance to more widespread use of RCC. This study analyses the effectiveness of different methods to characterise fresh concrete, in order to evaluate the tensile strength of joints between layers. Penetration resistance, ultra-sonic velocity and modified Vebe tests were made in fresh concrete. The results show that a complementary analysis of the continuous hydration of concrete can be obtained by using these tests.
