Bituminous mixes

Commonly called asphalt, bituminous mixes are a uniform mixture of coarse and fine aggregates coated with bitumen (binder).

Quality control of asphalt begins during the manufacture of the asphalt by the validation of compliance of materials (aggregates, binders and recycled materials), manufacturing methods in the factory and the finished product (temperature, homogeneity). The engineer continues his work by monitoring the implementation of the mix on-site (homogeneity of asphalt temperature during laying, density, thickness, adhesion). The finished coating is also subject to a series of controls (uniformity and surface roughness, compaction).

Aware of their ecological footprint, the producers are trying to think of new ways to reduce emissions through the introduction of recycled materials, vegetal bituminous binder or by producing warm mix.

www.bitumequebec.ca/_avantages-des-enrobes

In addition to ensuring the durability over time, the quality of manufacturing as well as the laying of asphalt are important elements of road safety. Driving comfort is also part of all criteria which are subject to quality control.

By visual surveys, site testing and laboratory analysis of the samples taken.

By engineers with experience and training who provide quality control of bituminous mixes and technicians performing tests and obtaining samples on-site with all certifications required for these mixes.

The asphalt manufacturing plants and public administrations (MTQ, Municipalities and Cities) make up the key clients of the engineer specialized in quality control of asphalt.

The asphalt producers have decided to invest, over the last years, in a better understanding of their ecological footprint. And some of the results they have presented go against the grain of accepted ideas. While inviting you to retain your critical sense, viewing the summary page of “Bitume Québec” can be quite instructive.

Over 10 million tonnes of asphalt are produced annually in Quebec, most of which is used for road network.