Michael W. Grutzeck

TL;DR: In this paper, the mechanism of activation of fly ash with highly alkaline solutions is described, and the product of the reaction is an amorphous aluminosilicate gel having a structure similar to that of zeolitic precursors.

TL;DR: In this article, the results of a research project initiated to study the stability of these materials when exposed to aggressive solutions were presented, where prisms of mortar made of sand and alkali-activated metakaolin were immersed in deionized water, ASTM sea water, sodium sulfate solution (4.4% wt), and sulfuric acid solution (0.001 M).

TL;DR: The reaction products formed in a series of fully-equilibrated, room-temperature-hydrated, fumed colloidal silica plus lime water mixtures were examined using 29Si magic angle spinning nuclear magnetic resonance as discussed by the authors.

TL;DR: In this paper, Zeolites X, Y, Na-P1 (90 °C), analcime and sodalite (150 °C) were synthesized from Class F fly ash using 3 M sodium hydroxide solutions and autogenous pressures, and partially zeolitized fly ashes were dried overnight in air at room temperature and then characterized using X-ray diffraction and SEM.

TL;DR: In this article, the effects of two fly ashes, a Class C and a Class F, their leachates and leached fly ash residues upon the first 24 hours of cement hydration were studied.