ABSTRACT
52 COMPARISON OF FINITE ELEMENT CONCRETE MODELS SIMULATING PULL-OUT TESTS A . di T O M M A S O and O. M A N F R O N I F a c u l t y of Engineer ing , Univers i ty of Bologna, Italy G. V A L E N T E F a c u l t y of Engineer ing , Univers i ty of L'Aqui la , Italy
