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Estimation of the value and the variability of elastic modulus of concrete in existing structure on the basis of continuous in situ measurements

Estimation of the value and the variability of elastic modulus of concrete in existing structure on the basis of continuous in situ measurements

This paper contains the results of analyses carried out on the basis of continuously performed strain and “stress” measurements in the concrete pylon of the Rędziński Bridge in Wrocław. The purpose of calculation was to estimate the value and the variability in time the effeetive, elastic modulus of concrete in a real reinforced concrete
structure. This measurements, performed in situ, allowed to take into account all the factors affecting the change of stiffness of concrete, including creep.