Technology
In our previous issue, we took a close look at the technologies contributing to the increased use of reclaimed asphalt pavement (RAP) as well as recycled asphalt shingle material.
Like the use of recycled asphalt, use of recycled asphalt shingles (RAS) in paving makes a great deal of sense.
The evolution of recycled asphalt has gone from simply using it as base, to using single sizes back in the hot mix, to fractionating into multiple sizes and treating it similarly to virgin aggregate, notes Patrick Reaver.
Although winter takes a toll on many industries, one of the hardest hit is roadbuilding and paving repair.
To the average driver on Ontario’s Highway 12, this summer’s paving job looked like any other paving project, and was nothing more than a mild inconvenience.
If you have driven anywhere in British Columbia lately, you have probably rolled over pavement that has been recycled by Green Roads Recycling Ltd. using the hot-in-place (HIP) recycling process.
The concept is simple enough. By placing and compacting at screed two layers of hot mix asphalt – binder and surface – in one continuous and simultaneous process, a more durable, bonded road surface is created.
As its moniker suggests, EZ Street can make life a breeze for roadbuilding and repair crews. The name also accurately defines why the product is already being used in 20 countries and is quickly gaining traction in Canada since the launch of EZ Street Canada three years ago in Yellowknife.
Concrete overlays, formerly known as whitetopping, inlays and ultra-thin whitetopping, are just what the name suggests – laying concrete over asphalt, composite or old concrete pavements for environmentally friendly, long-lasting and cost-effective rehabilitation.
Road foundation design and construction will probably never be a hot topic of conversation among users of Canada’s road network, even though many of us benefit from the results every day.
With more than 400 ready-mix concrete trucks on the road at any given time, St. Marys Canada Building Materials (CBM) relies on real-time data transmitted from those vehicles to its fleet management software to meet customers’ construction schedules.
New Brunswick’s award-winning Fredericton-Moncton Highway, the MRDC, officially opened to traffic on October 23, 2001 and this 195 km long, four lane section of the TransCanada highway has been recognized internationally for innovative construction methods, techniques and materials.
Reclaimed Asphalt Pavement (RAP) has been used on a large scale by hot mix asphalt producers since the 1970’s, spurred by sharp increases in the price of oil and the availability of surface millings from efficient cold milling machines.
A new asphalt operation puts corporate philosophy into practice.
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