A province-by-province review of how Canadian transportation agencies specify hot mix asphalt — design methods, binder grades, RAP provisions, performance testing, and the emerging shift toward balanced mix design.
Read the article →A province-by-province review of HMA design methods, binder grades, RAP frameworks, and performance testing requirements — including Nova Scotia's emerging balanced mix design provisions.
Over 90% of Canada's roads are paved with asphalt — but the condition of that pavement varies dramatically depending on where you are in the country.
From the 1970s Yellow Book to Bill 60's Royal Assent — tracing 50 years of effort to unify how Ontario builds its roads.
A province-by-province comparison of how Canadian transportation agencies specify asphalt binders — grading systems, PAV conditioning, MSCR, low-temperature testing, and more.
A comprehensive comparison of PG grade requirements, MSCR implementation, PAV conditions, polymer mandates, and key exclusions across every U.S. state and Washington, D.C.
Short, focused interactive lessons explaining one materials science concept at a time. Perfect for a quick refresh or a first introduction.
Gsb, Gse, and Gsa — three specific gravities, one aggregate, three different answers.
More lessons in production.
RoadCraft.School is a research and commentary blog focused on asphalt pavement engineering in Canada — the materials, the standards, and the policy decisions that shape how Canada builds and maintains its roads.
Canada's road network is one of the largest in the world, and nearly all of it is asphalt. Yet the research, specifications, and regulatory changes that govern how that pavement is designed and built are rarely written about in plain language. This site exists to change that — documenting what's happening in Canadian pavement engineering, province by province, standard by standard.
Every article is written with practitioners in mind: the technicians, engineers, inspectors, and students who work with these materials and specs every day.