Dipotassium [nickel(II) zirconium(IV)] tris-(orthophosphate) was prepared from a self-flux in the system K2O-P2O5-NiO-K2ZrF6. The title compound belongs to the langbeinite family and is built up from two [MO6] octa-hedra [M = Ni:Zr with mixed occupancy in ratios of 0.21 (4):0.79 (4) and 0.29 (4):0.71 (4), respectively] and [PO4] tetra-hedra inter-linked via vertices into a (3) ∞[M 2(PO4)3] fram...

Compressive strength of alkali-activated slag (AAS) concrete is influenced by multi-factors in a nonlinear way. Both artificial neural network (ANN) and alternating conditional expectation (ACE) models 3-day (3 d) 28-day (28 compressive AAS were established this study using the data reported related literature, where alkali concentration activator (Na2O%), modulus (Ms), water/binder ratio (W/B)...

This study presents the results of an experimental campaign on use municipal solid waste incinerator bottom ash (MIBA) and fly (FA) as precursors for production alkali-activated materials. MIBA was subjected to a pre-treatment stage in response two issues: high metallic aluminum content, which reacts pH solution, releasing hydrogen; low amorphous content silica-, aluminum- calcium-bearing phase...

Global warming on planet Earth results from the high emission of greenhouse gases, especially CO2. The Portland cement industry releases amounts CO2 and is responsible for about 5-8% total emissions. Efforts have been made to look alternative cementless binders mitigate impact environment. Geopolymers are one highlighted alternatives can be obtained reaction any aluminosilicate material with an...