Smooth, Consistent and Continuous

Created: December 4, 2012

Continuous, full-width paving on Autoroute 30 eliminates joints, improves mat quality

Lefco Equipment Inc.

A hopper insert gives the paver extra asphalt surge capacity and channels material directly into the paver's remixing augers.
A hopper insert gives the paver extra asphalt surge capacity and channels material directly into the paver's remixing augers.
Lefco Equipment Inc.

The screed's unique pin-lock attachment design offers quick installation, and screed extensions come in 6-, 12-, 24-, 36- and 60-in widths.
The screed's unique pin-lock attachment design offers quick installation, and screed extensions come in 6-, 12-, 24-, 36- and 60-in widths.
Nouvelle Autoroute 30 s.e.n.c.

The $1.5 billion CAD Autoroute 30 consolidates highways for easier access to markets in Montérégie, Ontario and the United States.
The $1.5 billion CAD Autoroute 30 consolidates highways for easier access to markets in Montérégie, Ontario and the United States.
The paver's two sets of two counter-rotating, variable-pitch augers aggressively reblend the asphalt to virtually eliminate segregation, and the augers do not fracture the aggregate.
The paver's two sets of two counter-rotating, variable-pitch augers aggressively reblend the asphalt to virtually eliminate segregation, and the augers do not fracture the aggregate.
Lefco Equipment Inc.

Three paving contractors are using the Terex CR662RM RoadMix with Terex Fastach 10 screed equipped for full-width, 30.2-foot paving, eliminating a joint in the travel lanes.
Three paving contractors are using the Terex CR662RM RoadMix with Terex Fastach 10 screed equipped for full-width, 30.2-foot paving, eliminating a joint in the travel lanes.
ministère des Transports du Québec

Combined with full-width paving, crews are constructing and compacting a hot joint to improve road longevity.
Combined with full-width paving, crews are constructing and compacting a hot joint to improve road longevity.
Lefco Equipment Inc.

Crews received very consistent thermal readings behind the Fastach screed, and the smooth mat met the stringent 1.2 mm deviation per 100 m specification.
Crews received very consistent thermal readings behind the Fastach screed, and the smooth mat met the stringent 1.2 mm deviation per 100 m specification.

In addition, contractors are receiving excellent ride smoothness results. To receive maximum bonus on the project, contractors must adhere to a stringent 1.2 mm deviation per 100 m under the International Roughness Index. Preliminary field results show the paving train is achieving IRI readings ranging from 0.8 to 1.1 mm per 100 m.

The combination of uniform mat temperatures behind the screed, remixed asphalt, full-width paving and bonus- level smoothness results should give Nouvelle Autoroute 30 s.e.n.c. a durable asphalt road surface that will require minimal maintenance throughout its 35-year ownership of the new highway. “The ultimate winner, however, is the traveling public, who will have a much more efficient way of traveling around the Montréal region,” says Lefebvre.