Fig. 6From: Improved fired clay brick compressive strength by recycling wastes of blacksmiths’ workshopsBricks prototypes manufacturing process. (1) Prototypes pressing machine. (2) Prototypes pressing process. (3) Prototypes pressing machine. (4) Cutting up the product. (5) Wet prototypes compared to the original brick. (6) Prototypes after drying from 20 to 24 h. (7) Prototypes after burning for 30 h. (8) Final Prototypes marked with steel filings ratioBack to article page