Environmental concerns have prompted researchers to focus on the development of alternative building materials like geopolymer concrete. However, their implementation requires curing beyond 60°C, which limits application sites. This study aims design a concrete at room temperature (30 ± 5°C) in laboratory Burkina Faso using metakaolin-based binder activated by an alkaline solution NaOH and natu...

The search for new alternative raw materials and their subsequent use supports the sustainability of natural resources. This article describes waste stone powder (WSP) in geopolymer synthesis. Five different types WSP (feldspar, limestone, marlstone, dolomite, marble) were comprehensively characterized influence on resulting properties (especially mechanical textural properties, setting time st...

Elemental leaching of metakaolin based geopolymers was investigated by immersing hardened paste specimens in a solution. For this, pure water and 0.1 molar acetic acid solutions were replenished ten times distributed over 56 days total. Dissolution diffusion the elements through from geopolymer into surrounding on cross-sections SEM-EDS microscopy, indentation, X-ray powder diffraction analysis...

In this paper, synthesis of geopolymer from fly ash with sodium hydroxide as activator was studied. Fly ash was replaced by Lime stone dust in various proportions (10% and 15%) where Fly ash was used as source material for synthesis of geopolymer. Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solutions were mixed maintaining a silicate modulus (Na2O / SiO2) at 1. Scanning electron micro...

In the present study, effect of pozzolanic material (Metakaolin and Silica fume) is studied through compressive and Flexural strength in cement concrete. Metakaolin and silica fume area used as cement replacement materials at 5%, 10% and 15% by mass keeping water–cement ratio as 0.42 Compressive and Flexural strength were observed after 7 and 28 days of curing. Silica fume is a by products resu...

Abstract Geopolymer refers to a large group of nanoporous, nanoparticulate materials that are synthesized by dissolution and polycondensation aluminosilicates in basic solutions can be made from variety starting materials, such as industrial waste ash, volcanic rock, or calcined clay. Geopolymers X‐ray amorphous, corrosion resistant, refractory, at ambient temperature pressure similar cements. ...

Geopolymer binders that combine aluminosilicate materials (i.e., precursors) with alkali activators are a viable and environmentally friendly alternative to ordinary Portland cement. While fly ash, slag, silica fume, metakaolin the most extensively investigated precursor materials, recent studies demonstrate feasibility of using low amorphous aluminosilicates (LAA) for geopolymer synthesis. Was...