Adsorption of superplasticizer admixtures on alkali-activated slag pastes

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An overview on the influence of various factors on the properties of geopolymer concrete derived from industrial by-products (2015, background): “Similar to OPC concrete, high range water reducing admixtures or superplasticizers (SP) can be incorporated into geopolymer system in order to reduce its water content while maintaining the desired workability thus resulting in a higher strength geopolymers [71–73].”
Advances in alternative cementitious binders (2011, background): “There are complications in some applications due to the fact that many of the superplasticizing admixtures which are usually used in Portland cement concretes are not effective in enhancing the flow behavior of alkali-activated binders, as they are often degraded by highly alkaline activators [116,1”
Rheology of alkali-activated slag pastes. Effect of the nature and concentration of the activating solution (2014, methodology): “To date, however, the studies conducted by different authors have yielded contradictory results, with admixtures sometimes reported to have a fluidising effect and at others to exhibit anomalous behaviour due to their instability in basic media [27–33].”
Compatibility between polycarboxylate-based admixtures and blended-cement pastes (2013, unknown): “These results concur with earlier studies [42].”