Context
As part of the Road 117 rerouting, the Canadian Malartic Mine needed a noise barrier to preserve residents' peace and quiet while respecting the environment and the local landscape.
The wall had to fit durably into an inhabited urban sector, withstand Abitibi conditions, and avoid recurring issues associated with conventional barriers, especially graffiti.
The solution implemented
Ramo designed, fabricated, and installed a double-sided Pilebyg® noise barrier with a woven debarked-willow finish. The system combines:
- a galvanized steel support structure
- absorptive panels with mineral wool
- woven debarked-willow facing on both sides
The 350 m long x 5 m high structure was installed directly on the ground, with a design that is not receptive to graffiti and suited to the Abitibi landscape.
Results and performance
Sound attenuation
- measured reduction of 5 dBA, matching the attenuation forecast in the project's impact study
- peace and quiet restored for the residential sector of Malartic along the route
Carbon footprint
- 12,433 kg of CO₂ captured by the willow stems incorporated into the panels
- a carbon-negative solution: each stem captures about 3 kg of CO₂ during its growth cycle
Client testimonial
"Ramo contributed to the success of the design and construction of the noise barrier built as part of the Road 117 rerouting work. Your company stood out for its ability to adapt to our specific needs while respecting the planned budget and schedule for project delivery. The final result fully matches the sound attenuation expected in the impact study, namely a 5 dBA reduction."
Christian Roy, Eng. (General Manager, Canadian Malartic Mine)
François Fortin, Eng. (Civil Works Superintendent, Canadian Malartic Mine)
Co-benefits
Not receptive to graffiti
The woven debarked-willow facing does not offer a usable smooth surface, giving it a durable advantage over conventional barriers.
Landscape integration
Natural materials and texture respect the Abitibi landscape and limit visual impact.
Social acceptability
A solution that is better received by Malartic residents than a conventional concrete or treated-wood wall.
Carbon-negative
12,433 kg of carbon captured by the willows, adding a climate benefit to the acoustic performance.
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