This article deals with adhesion of various alkali-activated metakaolin-based geopolymer coatings on structural steel 1.0038 (according to EN 10025-2). alloy was chosen in order analysis ad-hesion prepared coatings. Our samples were characterized by laser and SEM micros-copy grid test performed. Microscopy performed get knowledge about visible charac-terization overall quality Based previous re...

Abstract In this paper, the composition and properties of two different activated calcinated clays were investigated under selected curing conditions. The tendency metabentonite metakaoline to form geopolymers zeolites was by FTIR spectroscopy, TGA DSC techniques, PXRD, HT-PXRD, SEM, BET-N 2 adsorption analyses. selection optimal sample compositions done on a basis preliminary results obtained ...

Geopolymer cement was evaluated as wellbore sealing material for carbon dioxide geosequestration application. Curing of cement system in saline water and strength testing in triaxial stress state condition under lateral confinement is relevant to primary cementing in CO2 geosequestration wellbore in saline aquifer. Geopolymer cement was cured in saline water (both at ambient conditions for 28 d...

The early age volume changes occurring during the geopolymerisation reaction are not sufficiently understood yet, due to shortage of experimental data and theoretical models. This work presents new results on chemical autogenous deformation sodium-activated geopolymers from metakaolin, focussing first 72 h reaction. show that undergo early-age expansion, shrinkage. A model is proposed explain r...

Abstract The treatment of tannery wastewaters is a complex task due to the complexity waste: mixture several pollutants, both anionic and cationic as well organic macromolecules which are very hard treat for disposal all together. Geopolymers class inorganic binders obtained by alkali activation aluminosilicate powders at room temperature. Such process leads cement like matrix that drastically ...

This study investigates the suitability and potentials of using alkali-activated metakaolin geopolymers as sustainable low-cost thermochemical heat storage materials via water sorption and/or hydration reactions. Four different geopolymer formulations were assessed. The cyclic capacity moisture diffusion coefficients assessed two continuous vapor sorption/desorption cycles dynamic (DVS), provin...

Geopolymers have not been extensively employed as catalytic materials despite of their zeolite-resembling Si–Al structure. Geopolymerization offers a novel way for preparation catalysts and possibility to use waste or industrial side-stream derived raw material resource catalyst manufacturing. This work concentrates on metakaolin-based geopolymer that were prepared, characterized tested alterna...