BBC World Service - Turning mud into clean concrete, 01082022

A young scientist has developed a white powder which gives waste soil concrete-like properties Gnanli Landrou grew up in Togo, helping his neighbours dry out soil to make bricks, and his big dream is to help people like them build stronger, cheaper, houses 'Cleancrete' is being used as a substitute to cement, but it only has a sixth of the strength; so can only be used for smaller buildings