Published: 2014-02-01

Chemical resistance of mortars made of cements with calcareous fly ash

Monika Dąbrowska , Zbigniew Giergiczny

Abstract

This paper presents the results of chemical resistance of mortars made of blended cements with addition of calcareous fly ash. The test results showed that using calcareous fly ash as a cement constituent exerted a positive influence on sulphate resistance and chloride permeability, whereas carbonation resistance decreased with increasing amount of calcareous fly ash. Mechanical activation (grinding) and/or higher addition of calcareous fly ash in cement composition increased fly ash activity, which influenced positively the resistance to chemical attack. Portland-composite cements CEM II where the calcareous fly ash and granulated blast furnace slag were applied together, showed the highest resistance against all types of chemical corrosion.

Keywords:

calcareous fly ash, carbonation, chloride permeability, sulphate corrosion

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Dąbrowska, M., & Giergiczny, Z. (2014). Chemical resistance of mortars made of cements with calcareous fly ash. Roads and Bridges - Drogi I Mosty, 12(2), 131–146. https://doi.org/10.7409/rabdim.013.010

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