Aimed to achieve “waste control by waste” of coal-to-liquids (CTL) industry, coal gasification residue (CGR), the most typical CTL residue, and chemical wastewater (CCW) were used as aluminosilicate precursor auxiliary activator respectively prepare alkali activated materials (AAMs). CGR-based AAMs using a less concentrated NaOH solution than conventional, with CCW mixing water synthesized. The...

Alkali-activated materials (AAMs) and “geopolymers” are inorganic polymeric obtained by mixing of solid aluminosilicate precursors with an alkaline solution (generally, KOH or NaOH Na2SiO3 mixed in various ratios). This class has emerged as a greener alternative to traditional concrete, for large-scale well niche applications such conservation restoration built heritage. In this work we apply R...

It is aimed to be used as a raw material in the production of geopolymer mortars containing Afşin - Elbistan fly ash with high rate calcium oxide two different grain sizes. In design these mortar mixtures, activator/binder ratio was kept constant 0.55, water/binder 0.50 and sand/ binder 0.30. Sodium silicate (SS) sodium hydroxide (SH) were together activators. SS/SH 1 1.5, molarity 10 14 M, cur...

Geopolymer concrete and mortar have evolved over the years as potential alternatives for reducing greenhouse gases associated with cement production. This current research was aimed at investigating optimum dosage concentration of sodium hydroxide required to leach out silica alumina oxides in fly ash geopolymerization take place. Blackish grey from Morupule, Botswana, synthesized by varying (N...

This article highlights recent experimental advances in the use of inorganic substances encapsulation pollutants and, particular, discusses potential applicability and constraints geopolymerization process for treatment wastewater containing chromium. A great percentage waste chromium salts is produced by leather industry during tannery process. Such industrial form liquor almost 40% initial co...

Raw water treatment and coal-based power generation facilities produce a high level of waste to the environment annually. A low recycling scheme has worsened situation wastes usually end up in landfill. Further environmental degradation could be prevented by re-utilising for production alternative bricks. Additionally, development low-fired brick from can comparatively reduce energy consumption...

This study aims to use natural carbonated Tunisian clay as an aluminosilicate precursor for the elaboration of phosphate-based geopolymers, which yields valorization this common material in Tunisia. In addition, presence calcium carbonate allows investigation associated mineral’s effect on properties geopolymeric materials. To achieve these purposes, several experimental techniques were used, n...

Contemporary organizations are showing a growing interest in the reuse of solid waste from industrial processes with intention reducing environmental impacts and costs. The mining activity is one main generators Brazil. In parallel, geopolymeric materials have been gaining prominence studies that make it possible substitute for ordinary Portland cement, due to its advantages. Therefore, present...

This paper demonstrates the transformation of industrial residue (copper slag) a Swedish mining and smelting company “Boliden”, through geopolymerization, into advanced building materials. The main objective this experimental study is assessment appropriate conditions for preparation alkali-activated slag-based geopolymer pastes with further foaming production, by aluminum powder addition. alka...

This study regards the development of lightweight geopolymer composites through valorization various construction and demolition wastes. Brick waste was utilized as sole aluminosilicate precursor for geopolymerization reactions, expanded polystyrene polyurethane wastes were used artificial aggregates, short polyethylene fibers developed from CDWs reinforced matrix. The curing conditions synthes...