A new way of protecting concrete from fire damage using materials recycled from old tyres has been tested by researchers at the University of Sheffield,UK.Using man-made polypropylene(PP)fibres to protect concrete structures from damage or collapse if a fire breaks out is a relatively well-known technique.Many modern structures,including large-scale engineering projects such as Crossrail,have used concrete that includes PP fibres for protection against fire spalling.A study by the University of Sheffield is the first to show that these fibres do not have to be made from raw materials but can instead be reclaimed from used tyres.”We've shown that these recycled fibres do an equivalent job to’virgin’PP fibres which require lots of energy and resources to produce,”says lead author Dr Shan-Shan Huang,in the Department of Civil and Structural Engineering at the University of Sheffield.
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