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sustainable construction world
Much Asphalt started recycling road material in 2007
and the benefits were immediate when a runway
rehabilitation contract at OR Tambo International
Airport called for 10% recycled material to be included
in the bitumen treated base course. This required Much
Asphalt Benoni to screen more than 8 000 tonnes of
recycled material alone.
In 2011 the Benoni branch commissioned a new
impact crusher and a mobile screen, which run between
five and six hours a day to ensure a consistent 300 000
tonne stockpile of reclaimed asphalt for recycling.
A Finlay 649 triple deck screen was added to this f
leet in 2015.
In 2013 Much Asphalt set a new benchmark when it
produced a trial mix for use at OR Tambo International
Airport containing the highest known proportion of
recycled material in a warm mix asphalt product in
South Africa.
The mix, manufactured using the company’s warm
mix asphalt plant in Benoni, involved 500 tonnes of
bitumen treated base containing 55% RA. The trial mix
was successfully paved at the OR Tambo cargo area,
resulting in an order for an additional 2 000 tonnes.
∞
MAIN PHOTO:
Fine RA feeding from
the screening plant at Much Asphalt
Benoni.
LEFT:
Unprocessed RA.
BOTTOM RIGHT:
Much Asphalt’s
new mobile plant produces asphalt
containing 40% RA on a SANRAL
contract near Bloemfontein.