Effect of w/c-ratio, curing conditions and testing age on concrete performance for Service Life Design

Author(s): Ebensperger, Luis, Olivares, Mario
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN: 978-2-35158-200-8
e-ISBN: 978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 835-840
Total Pages: 6
Language : English

Abstract: The effect of the permeability on concrete cover on the long-term performance of concrete structures is well known. This layer is the one that offers resistance to the ingress of harmful agents, such as CO2 and chlorides, through the porous microstructure. Both phenomena eventually lead to corrosion of the steel reinforcement of the structural elements, seriously affecting the service life of the structure.
This work shows the results of a research carried out in laboratory that allows obtaining basic performance data of concrete mixtures done with Chilean pozzolanic cements. The study parameters were the water/cement ratio (indirectly the cement content), the curing conditions of the samples, and the age of testing concrete (up to 180 days).
The concrete mixtures were characterized by a series of standardized tests in order to obtain correlations between them. The tests considered Compressive Strength, Surface Electrical Resistivity, Water Permeability, Penetration- Migrationand Diffusion of Chlorides are correlated to the Air Permeability test results.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00