Jannie S.J. van Deventer

TL;DR: The effects of immersion in alkaline solutions on the gel structure and pore network of fly ash based geopolymers are investigated in this paper, showing that up to pH 14, there is very little leaching of framework components (Si or Al) from the geopolymer gel, and a largely unchanged mesoporous gel structure.

TL;DR: A range of anionic and cationic polycarboxylate ether (PCE) plasticizers with different molecular architectures (molecular weights, side chain lengths, and ratios of side chain density to backbone charge) are synthesized and tested to determine their effects on the rheological properties of fresh alkali-activated slag (AAS) pastes.

TL;DR: From the results it is seen that the energetics of deprotonation and dimerisation reactions depend greatly on the pH value, and these results correlate well with existing experimental values and trends.

TL;DR: In this paper, high carbon rice hull ash and solid sodium aluminate were used as silica, alkali and alumina sources to synthesise one-part "just add water" geopolymer binders.

TL;DR: Nanotomographic reconstruction of a sample of low-CO2 “geopolymer” cement provides the first three-dimensional view of the pore structure of the aluminosilicate geopolymer gel, as well as evidence for direct binding of geo-mer gel onto unreacted fly ash precursor particles as mentioned in this paper.