Evaluación de mezclas de hormigón para el nuevo canal de Panamá mediante la medida de la resistividad y de la resistencia a la difusión de cloruros

The Panama Canal was built about 100 years ago and a two new sets of locks are being constructed by the consortium "Grupos Unidos por el Canal" (GUPC) which is coordinated by Sacyr S.A. The old Panama Canal was built without steel reinforcement but the new one considered reinforcement as part of the antiseismic design. The Panama Canal Authority (ACP), established a lifespan of 100 years, for which it specified values from the ASTM 1202 method lower than 1000 Coulombs and the estimation of the lifespan by means of a program. The results of both Coulombs resistivity and diffusion coefficients, obtained after natural diffusion, are discussed for some of the designed mixtures. The numerical calculations of service lifespan, as obtained by LIFEPRED method, are also shown.

Keywords:concrete; chlorides; resistivity; diffusion.