Complementary testing techniques applied to obtain the freeze-thaw resistance of concrete
| Autor: | M.J. Casati, H. L. Romero, Alejandro Enfedaque, Jaime C. Gálvez |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
FTCS scheme
Materials science Silica fume 0211 other engineering and technologies Strain measurement 02 engineering and technology Porosimetría por intrusión de mercurio mip Strain measurements 021105 building & construction lcsh:TA401-492 Freeze thaw resistance General Materials Science Materials of engineering and construction. Mechanics of materials Scaling Medidas extenso Test procedures business.industry Building and Construction Structural engineering 021001 nanoscience & nanotechnology MIP Hielo-deshielo Freezing-thawing Mechanics of Materials TA401-492 Hormigón concrete lcsh:Materials of engineering and construction. Mechanics of materials 0210 nano-technology business Concrete |
| Zdroj: | Materiales de Construcción; Vol. 65 No. 317 (2015); e048 Materiales de Construcción; Vol. 65 Núm. 317 (2015); e048 Materiales de Construcción Consejo Superior de Investigaciones Científicas (CSIC) Digital.CSIC. Repositorio Institucional del CSIC instname Materiales de Construccion, Vol 65, Iss 317, Pp e048-e048 (2015) Materiales de Construccion, Vol 65, Iss 317, p e048 (2015) |
| ISSN: | 1988-3226 0465-2746 |
| DOI: | 10.3989/mc.2015.v65.i317 |
| Popis: | Most 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. |
| Databáze: | OpenAIRE |
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