Effect of supplementary cementing materials on the concrete corrosion control
DOI:
https://doi.org/10.3989/revmetalm.2003.v39.iExtra.1127Keywords:
Supplementary cementing materials, Pozzolans, Slags, Blended cements, DurabilityAbstract
Failure of concrete after a period of years, less than the life expected for which it was designed, may be caused by the environment to which it has been exposed or by a variety of internal causes. The incorporation of supplementary materials has at the Portland cement the purpose of improving the concrete microstructure and also of influence the resistance of concrete to environmental attacks. Different mineral by-products as ground granulated blast furnace slag (GGBS), silica fume (SF), metakaolin (MK), fly ash (FA) and other products have been used as supplementary cementing materials. This paper is about the behavior of concrete in the presence of mineral additions. Compared to Portland cements, blended cements show lower heat of hydration, lower permeability, greater resistance to sulphates and sea water. These blended cements find the best application when requirements of durability are regarded as a priority specially on high performance concrete.
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