Seeking to find new ways to recycle the waste generated by the footwear industry in Franca – the main shoe manufacturing cluster in the state of Sao Paulo, Brazil - 80% of which is in the form of leather trimmings, researchers at the University of Franca (Unifran) have developed a type of ready-to-use concrete which contains these trimmings in its formula. The new product offers several advantages. It is lighter than similar materials and is resistant to the weather, to sulphate attacks, alkali reactions and has controlled permeability.

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