Forty-five tonnes of recycled glass has been used to create a new car park at the Rosny Tennis Club.
Surrounding drain works and bedding contain a further eight tonnes of recycled glass – in total about 250,000 stubbies!
A joint initiative between Veolia, Hazells and the Packaging Stewardship Forum (PSF), the project used glass collected through Veolia’s recycling facility, crushed by Hazells and reused by Clarence City Council.
It seems the glass is a win-win alternative to using natural sand in asphalt and concrete mix at a time when virgin sand becomes more difficult to source for civil engineering works.
The project used the recycled glass 'sand' in the pipe bedding, concrete and asphalt with the glass ground to a maximum of 2.36mm diameter.
The recycled glass fines function in a similar way to sand, although it is not as porous and therefore requires the addition of more lime for use in cement mixes.
It does however provide greater skid-resistance in a bitumen mix, as the glass does not become smooth like natural sand.
As well as use in concrete and asphalt production, recycled glass can be used as an alternative to sand in masonry products, pipe embedment, horticultural potting sand and even golf course sand traps.
Veolia and Hazell Bros formed an alliance in October 2008 to investigate the viability and market potential of recycling container glass that could replace natural sand.
Clarence Mayor Jock Campbell welcomed the initiative and stressed that Australia needed to catch up to USA, UK and New Zealand which have been using recycled glass in road base, asphalt and as a pipe embedment material for many years.
Up until now 30 per cent of glass recovered from kerbside systems could not be recycled due to breakage and/or contamination. Nationally that comes to around 130,000 tonnes a year.
So just remember, the next time you are about to throw a glass bottle or jar in the rubbish, it is better off recycled in the pavement (or snagging your opponents’ golf balls)!