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Durability properties of alkali pozzolan cement (APC)

Authors:

Chandana Kulasuriya,

AU
About Chandana
Department of Civil Engineering, Curtin University, Perth, Australia.
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WPS Dias ,

LK
About WPS
Department of Civil Engineering, Faculty of Engineering, University of Moratuwa, Katubedda, Moratuwa.
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Vanissorn Vimonsatit

AU
About Vanissorn
Department of Civil Engineering, Curtin University, Perth, Australia.
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Abstract

This paper compares the durability properties of alkali pozzolan cement (APC) with high volume fly ash (HVFA) cement and ordinary Portland cement (OPC). The susceptibility to durability issues was investigated through the water absorption test using 28-day-old samples. Durability against chemical attacks was investigated through sulphuric acid attack, chloride ion penetration and carbonation tests on 1-year-old samples. The results indicated that APC occupies a median position in relation to OPC and HVFA, having greater resistance than HVFA for water absorption and carbonation, and greater resistance than OPC for sulphuric acid attack and chloride ion penetration. Chemical and microstructural reasons for the above behaviours are presented. A key index of durability performance is the free calcium hydroxide available and/or generated during cement hydration and durability exposure.

How to Cite: Kulasuriya, C., Dias, W. and Vimonsatit, V., 2019. Durability properties of alkali pozzolan cement (APC). Journal of the National Science Foundation of Sri Lanka, 47(1), pp.121–131. DOI: http://doi.org/10.4038/jnsfsr.v47i1.8929
Published on 31 Mar 2019.
Peer Reviewed

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