Geopolymerization process of alkali–metakaolinite characterized by isothermal calorimetry

The Effect of Si/Al on Mechanical Properties and Fracture Behavior of Stainless Steel Mesh/CrpReinforced Geopolymer Composites

“…The researches on the geopolymerization mechanism in this system are attracting more and more attentions, and the process may be summarized briefly as follows: dissolution, rearrangement, condensation and re-solidification [12][13][14][15][16][17][18]. The structure and mechanical properties of geopolymers are affected by several parameters such as chemical composition and reactivity of the raw materials, nature and concentration of the activating solution, curing conditions.…”

Influence of the carbonate-free clay calcination temperature and curing conditions on the properties of alkali-activated mortar

“…Alkali hydroxides are usually combined with an aluminosilicate source in the form of an aqueous solution (Provis, 2009). Given the complexity of the gel structure, which is formed through silicate activation of fly ash or metakaolin, and in particular its dependence on a large number of compositional and processing parameters, various approaches to the analysis of the gel binder were developed and implemented in the past years (Rahier et al, 1997, Palomo et al, 2005, Yao et al, 2009.…”

Calorimetric study of geopolymer binders based on natural pozzolan

“…P3 and P4, have lower total heats of reaction. These results can then be used to determine the relative geopolymerisation extents, as the process is entirely exothermic and so the heat of reaction provides a useful representation of the extent of geopolymerization [10,30].…”

“…It is assumed that the rate constant K is an inverse function of t 50 , so that the ratios of t 50 values determined at different temperatures can be used instead of K to calculate E a [30,33,35]. So, plotting Table 5 shows the calculated apparent activation energy of each of This is a preprint of an article published in Journal of Thermal Analysis and Calorimetry.…”