US team uses composite waste to strengthen permeable pavement

Indeed, here in the UK, permeable paving accounts for an increasingly high proportion of all new paving that’s installed.

However, because permeable paving is highly porous, it’s not as durable as the traditional concrete that is used on major roads and can therefore be more expensive to maintain.

In response, a team of researchers at Washington State University have demonstrated that the strength of permeable pavements could be significantly improved through the addition of waste carbon fibre composite material.

Famed for their lightweight and strength, Carbon fibre composites are used widely across a range of industries, and with the market growing at around 10 per cent per year, and with industries struggling to easily recycle their waste, composite scrap is an abundant, and relatively untapped resource.

The Washington team’s recycling method, described in the March issue of the Journal of Materials in Civil Engineering, involved adding carbon fibre composite scrap supplied by Boeing to their pervious concrete mix. The added material greatly increased both the durability and strength of pervious concrete.