Journal article

Microstructure and durability of alkali-activated materials as key parameters for standardisation

JSJ Van Deventer, R SAN NICOLAS, I Ismail, SA Bernal, DG Brice, JL Provis

Journal of Sustainable Cement-Based Materials | Taylor & Francis | Published : 2015

Abstract

Alkali-activated concrete (AAC) has been commercialized as a low-CO2 constructio material, but its adoption still faces several challenges, including standardization, lack of a dedicated supply chain, limited service track record, and the question of whether laboratory durability testing can predict service life. This paper outlines how using different precursors leads to the formation of different AAC phase assemblages, and how AAC can be recognized in standards using a performance-based approach independent of binder chemistry. Microstructural assessment of pastes, strength development, water permeability, and chloride migration of two AACs (100% slag and 1:1 slag:fly ash) are presented, a..

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Grants

Awarded by Australian Research Council


Funding Acknowledgements

Funding support is acknowledged from Zeobond Research Pty Ltd, from the Australian Research Council as part of [grant number LP0991550], and a PhD scholarship awarded to I. Ismail by the Ministry of Higher Education of Malaysia.