Alkali-activated cements for ground improvement

Conference paper

Mavroulidou, M, Gray, C and Gunn, M J (2020). Alkali-activated cements for ground improvement. 6th International Symposium on Green Chemistry, Sustainable Development and Circular Economy (Greenchem6). Thessaloniki, Greece 20 - 23 Sep 2020
AuthorsMavroulidou, M, Gray, C and Gunn, M J
TypeConference paper
Abstract

The paper studies alkali-activated (AA) slag cements for soil stabilisation, as alternatives to traditional binders such as Portland cement or lime. A number of alkali activators were considered, containing also a range of salts and a material retrieved from waste (Paper Sludge Ash, PSA). The results are discussed in terms of unconfined compressive strength (UCS) at two different curing times. In general alkali-activated cements based on the use of alkali salts only had a modest performance in terms of strength improvement; a material that showed promise however as slag activator was the PSA. Further analysis is recommended in order to gain a better understanding of the complex mechanisms involved towards engineering uses for soil stabilisation.

Keywordsalkali-activated cements; soil stabilisation; paper sludge ash; ground granulated blast furnace slag
Year2020
Accepted author manuscript
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Print20 Sep 2020
Publication process dates
Accepted12 Jul 2020
Deposited01 Oct 2020
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