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Complementary testing techniques applied to obtain the freeze-thaw resistance of concrete

AutorRomero, H. L.; Enfedaque, A.; Gálvez, J. C.; Casati, M. J.
Palabras claveFreezing-thawing
Strain measurements
Fecha de publicación2015
EditorCSIC - Instituto de Ciencias de la Construcción Eduardo Torroja (IETCC)
CitaciónMateriales de Construcción, Vol 65, (No 317), (2015)
ResumenMost of the standards that evaluate the resistance of concrete against freeze-thaw cycles (FTC) are based on the loss of weight due to scaling. Such procedures are useful but do not provide information about the microstructural deterioration of the concrete. The test procedure needs to be stopped after several FTCs for weighing the loss of material by scaling. This paper proposes the use of mercury-intrusion-porosimetry and thermogravimetric analysis for assessing the microstructural damage of concrete during FTCs. Continuous strain measurement can be performed without stopping the FTCs. The combination of the above techniques with the freeze-thaw resistance standards provides better and more precise information about concrete damage. The proposed procedure is applied to an ordinary concrete, a concrete with silica fume addition and one with an air-entraining agent. The test results showed that the three techniques used are suitable and useful to be employed as complementary to the standards.
Versión del editordoi:10.3989/mc.2015.01514
Aparece en las colecciones: (IETCC) Artículos
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