City Buying Asphalt Recycler
at left, loading asphalt millings into a portable recylcer, while at right, new product from the machinery – images courtesy City of Prince George.
Prince George, B.C. – The City will soon be inviting bids from vendors for a portable asphalt recycling machine.
That’s good news when it comes to pothole repairs in the City, as the portable machine will mean crews can use a “hot mix” during the colder months when the asphalt plants are not yet up and running. A patch made with a hot mix lasts longer than the current cold mix that’s used from late fall till May.
“This unit will provide multiple benefits for residents. It means we won’t have to wait until the plants are open to begin doing longer lasting patches on the most troublesome potholes on our streets,” says Blake MacIntosh, Manager of Roads and Fleet.
On average, the City of Prince George produces 5000 tonnes of asphalt millings per year. The millings are currently applied to existing gravel roads within the City to eliminate dust issues. When using the asphalt recycler, old asphalt is loaded into the unit’s hopper and fed into a drum. The asphalt material is heated, mixed in the drum, and recycled back into useable hot mix asphalt. Within eight to 10 minutes, one tonne of recycled asphalt can be produced.
“With the use of an asphalt recycler, new aggregate does not have to be mined and quarried, new asphaltic oils don’t need to be refined, transport requirements of raw materials are reduced, and GHG emissions are limited,” says MacIntosh. “The only additional resources required are the fuel needs of the asphalt recycler, equipment to fill the hopper and to transport and place the recycled asphalt. It is also possible to recycle the same section of asphalt numerous times.”
The Bagela BA10000 Asphalt Recycler current purchase price is $175,000. A request for proposal (RFP) will be posted by the end of March and the City hopes to have the unit in operation by late 2016.
from January 1st of this year to Feb 17, crews have repaired 1267 potholes in the City. That may sound like a lot, but that’s 63% fewer potholes this year than during the same period a year ago.
Often, when there is a very active freeze thaw cycle, crews will have to make multiple repairs to the same pothole using the cold mix.