La resistividad eléctrica como parámetro de control del hormigón y de su durabilidad
Abstract
La necesidad de calcular la durabilidad del hormigón ha llevado a buscar un ensayo que fuera capaz de cuantificar todas las fases del proceso desde la fabricación del hormigón hasta su curado y endurecimiento. La resistividad eléctrica como inversa de la conductividad-difusividad es una propiedad del hormigón que permite su control de forma no destructiva y por ello, accesible al autocontrol. La resistividad es un indicador del fraguado y de la resistencia mecánica, del grado de saturación del hormigón y por ello del grado de curado y de la impermeabilidad o resistencia al ingreso de sustancias agresivas en el hormigón. Finalmente tiene una relación directa con la velocidad de corrosión al indicar el grado de humedad del hormigón. Por todo ello es un parámetro que permite relacionar al microestructura con el comportamiento durable del hormigón. En el artÃculo se describen los fundamentos de sus posibilidades.Downloads
References
Kropp, J. H. H. K. (1995). "Performance criteria for concrete durability." RILEM REPORT nº 12: 1-328.
Page, C.L., Short, N.R. & El Tarras, A. (1981) “Diffusion of Chloride lons In Hardened Cement Pastes†Cement and Concrete Research. Vol. 1 1, No. 3, pp. 395-406.
Tuutti, K. (1982) ‘Corrosion of Steel in Concrete’, Swedish Cement and Concrete Research Institute (CBI) no.4-82, Stockholm.
McCarter, W. J., and Garvin, S., (1989) “Dependence of Electrical Impedance of Cement-Based Materials on their Moisture Condition,†J. Phys. D: Appl. Phys., Vol. 22, pp. 1773 – 6
Monfore, G.E. (1968) “The electrical resistivity of concreteâ€. Journal of PCA, pp.35-48.
Polder, R.; Andrade, C.; Elsener, B.; Vennesland, O.; Gulikers, J.; Weidert, R.; and Raupach, M.; “ Test methods for on site measurement of resistivity of concreteâ€, RILEM TC 154-EMC: Electrochemical techniques for measuring metallic corrosionâ€, Materials and Structure, Vol 33 (2000), pp. 603-611.
Whiting, D. 1981, “Rapid determination of the chloride permeability of concrete†– Federal Highway Administration – Report FHWA/RD-81/119.
Baroguel-Bouny, V. ; et al., “Concrete design for a given structure service life. Durability control with respect to reinforcement corrosion and alkali-silica reaction. State-of-the-art and guide for the implementation of a perfomance-type and predictive approach based upon durability indicators†(in French), Scientific and technical documents-AFGC, July 2004, 1-252.
Andrade, C., Alonso, C., Arteaga, A. & Tanner, P. (2000) “Methodology based on the electrical resistivity for the calculation of reinforcement service life†5th Canmet/ACI Int. Conference on Durability of concrete – Supplementary papers volume. Barcelona, Spain, pp. 899-915.
Andrade, C. and R. d'Andrea (2008). “Electrical resistivity as microstructural parameter for the calculation of reinforcement service lifeâ€. Microstructure Related Durability of Cementitious Composites, Vols 1 and 2. W. Sun, K. VanBreugel, C. Miao, G. Ye and H. Chen. 61: 1483-1490.
Wenner F., “A Method of Measuring Earth Resistivityâ€. Bull, National Bureau of Standards, Bull 12(4) 258, s 478-496; 1915/16.
Andrade C, Rebolledo, N. (2011). Monitoring by resistivity and ultrasonic velocity of the effect of the w/c ratio on setting and hydration evolution-XIII International Congress on teh Chemistry of Cement, Madrid.
Andrade C., d’Andréa R., Castillo A., Castellote M. The use of electrical resistivity as ndt method for specification the durability of reinforced concrete NDTCE’09, Non-Destructive Testing in Civil Engineering, Nantes, France, June 30th – July 3rd, 2009
Fernandez Luco L. TÃtulo: Valoración de técnicas no destructivas para el control de la eficiencia de curado del hormigón. Tesis Doctoral. Universidad de Alicante, Septiembre/2008.
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