Mrs and Mr Narayan use concrete to treat acidity as a substitute for lime because currently it is cheaper. Photo: AusAID Published July 4, 2012 at 600 × 400 in Concrete results Mrs and Mr Narayan use concrete to treat acidity as a substitute for lime because currently it is cheaper. Photo: AusAID Mrs and Mr Narayan use concrete to treat acidity as a substitute for lime because currently it is cheaper. Photo: AusAID