INFLUENCE OF AGE AT THE TIME OF LOAD APPLICATION ON CONCRETE CREEP

INFLUENCE DE L'AGE A LA MISE EN CHARGE SUR LE FLUAGE DU BETON

THE AIM OF THE TESTS CARRIED OUT IS TO DETERMINE THE CAUSE OF IRREGULARITIES OBSERVED IN RESULTS OBTAINED IN THE PREVIOUS PHASE OF THE INVESTIGATION AND TO MAKE THESE RESULTS USABLE. THE LATTER SHOWED THAT AGE AT THE TIME OF LOAD APPLICATION HAD A MARKED INFLUENCE ON THE DIFFERED DEFORMATION OF GIRDERS, BUT THEY DID NOT LEAD TO DEFINITE CONCLUSIONS AS TO THE MEANING OF THIS INFLUENCE. INDEED THE INSTANTANEOUS DEFLECTIONS MEASURED DO NOT AGREE WITH CALCULATIONS AND THE DEFLECTION AND REACTION CHARTS CANNOT BE CLASSIFIED IN QUITE THE EXPECTED ORDER.