Lightweight heavy geopolymer foam based on fayalite slag: Influence of alkali concentration on cellular structure

Key Points

• Lightweight geopolymer foam exhibits varied cellular structure based on different alkali concentrations.
• Notable structural variations were observed, particularly a 30% difference in foam density.
• Experimental analysis on the influence of alkali concentration on fayalite slag-derived foam was conducted.
• Findings may guide future applications in construction materials and sustainable building practices.