Credibility of concepts and models about service life of concrete structures in the face of the effects of the global climatic change. A critical review

J. M. Mendoza-Rangel; P. Castro-Borges

doi:10.3989/mc.2009.46608

Authors

J. M. Mendoza-Rangel Centro de Investigación y Estudios Avanzados del IPN Unidad Mérida, Mérida
P. Castro-Borges Centro de Investigación y Estudios Avanzados del IPN Unidad Mérida, Mérida

DOI:

https://doi.org/10.3989/mc.2009.46608

Keywords:

concrete, climatic change, durability, service life, prediction models

Abstract

Service life definitions involve more considerations today than thirty years ago. This is because only mechanical parameters were taken into account by then. Other parameters like durability were introduced a few years ago but it is difficult to use these parameters to predict service life and validate, nowadays, future behavior. This is due mainly to a mixture of variables, methods, materials and environments whose behavior is hard to predict. These factors take special importance facing the effects from the climatic change that causes unpredictable and hardly modelling environmental behavior in terms of service life of the concrete.

The aim of this work is to review critically the definitions of durability and service life of diverse codes and international associations, making emphasis in the points that must be improved to be in accordance with the requirements that suppose the effects of the climatic change. With base in this, new definitions of service life and durability were set out. A proposal to modify the philosophy of the approaches of service life must make emphasis in dividing service life in several stages, which could be the key to take into account the global climatic change.

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