Microstructure and integrity of leucite ceramic derived from potassium-based geopolymer precursor

Comparison of the microstructure and the compressive strength of two geopolymers derived from Metakaolin and an industrial sludge

“…TEM analysis exhibit that the newly formed material is a combination of Nano-spherical precipitate and initial phases. The size of nanoparticles (approximately 20 nm [34,35]) and their forms (spherical form) confirm the result obtained by XRD analysis, that the newly formed structure is an amorphous phase. TEM micrographs of MIS based-geopolymer (MISn) and MK based-geopolymer (MKn) don't show any microcracking.…”

Preparation of macroporous ceramic from metakaolinite-based geopolymer by calcination

“…Jia et al [28] found some kind of crack would be existed in the products when the geopolymer was sintered at higher heating rate. But in this experiment, no crack was found at heating rate of 150°C/min.…”

Thermomechanical properties of particle-reinforced geopolymer composite with various aggregate gradation of fine ceramic filler

“…In recent years, there has been a growing interest in research concerning development and manufacturing of geopolymer systems with excellent thermal stability at high temperatures [17,18]. In particular, metakaolin and potassium silicate-based geopolymers demonstrated such a properties [19][20][21]. It was reported that dimensional changes are influenced by solid/liquid ratio and related to the kinetics of water release during thermal exposure [22].…”