01
Define the requirements
Soil, traffic, climate, frost depth, water, drainage, loading and construction constraints.
Engineering firms and infrastructure owners
Data to support design.
A framework for comparison.
Assess a pavement alternative incorporating BLC using documented performance, service conditions and a like-for-like cost schedule.
The work to undertake together.
02
Compare designs
A reference design and a BLC alternative meeting the same functional requirements.
03
Set acceptance criteria
Mix suitability, traceability, density, strength, curing and conditions for reopening.
A conceptual section, adapted to the site.
Asphalt surfacing
Granular layer
BLC insulating layer
Subgrade
A 300 mm BLC layer, or the 12-inch commercial reference, does not determine total excavation depth. Design must account for the entire pavement structure.
- Check thermal properties under service conditions.
- Address transitions, interfaces and drainage.
- Specify protection from water and de-icing salts.
A rigorous approach to life-cycle evaluation.
The September 2020 InnovAct study provides a 30-year pavement comparison case. Its assumptions must be updated to prepare a current estimate.
Medium-scenario result
Discounted life-cycle cost decreases from C$861,541 to C$794,691 per 3.75 m lane-kilometre, about 7.8% lower, excluding excavation. Initial cost is higher in that scenario.
Scope of the comparison
2020 medium-price scenario and assumptions, with a 300 mm layer. This historical result is neither a current price nor a guaranteed saving for another project.
Access technical information
Original reports and correspondence available on request from BLC.
Start with a specific project.
Share the project type, location, dimensions and main constraints.
Buildings: define the evidence needed for the assembly.
For a floor, fill or refurbishment, review service weight, loading, interfaces, moisture, shrinkage and fire or acoustic requirements. Pavement-insulation results are not a general building qualification.