Carbon fiber waste incorporation in blast furnace slag geopolymer-composites

•To develop a new geopolymer-composite using wastes and by-products.•To recycle an industrial waste such as composite material from aircraft industry.•To recycle an industrial by-products (BFS) as geopolymer source.•To improve the sulphuric attack resistance of geopolymer.•To improve the thermal properties of geopolymer.