Análisis numérico de un problema de deterioro estructural causado por la corrosión en las armaduras del hormigón armado

S. TORO; P. SÁNCHEZ; A. HUESPE

Buenos Aires, Argentina

Jornada; 20 Jornadas Argentinas de Ingenieria Estructural 2008; 2008

Asociación Argentina de Ingeniería Estructuctural

In this work, we analyze the mechanical response of reinforced concrete structuralcomponents undergoing a corrosion process in the reinforcement bars. Two mechanical effects areproduced by this corrosion process:
the volumetric increment of the reinforcement bars, due to the corrosion product (rust)accumulation; this effect generates a traction state into the cover concrete inducing damagestate, and therefore, concrete net section loss;
bar section reduction.Both phenomena, and their interaction, produce a notably structural degradation.And they have been numerically simulated by using a finite element methodology. That isdescribed in the present work. Structural limit loads of beams with different rebar configurations andcorrosion attack degrees are compared.