In this episode, we will explore Bitumen Stabilised Material (BSM) and thick asphalt. We highlight the advantages of BSM in terms of the environment, performance, efficiency, and cost-effectiveness.

BSM is a special granular material treated with foamed bitumen or bitumen emulsion. It becomes stronger and less susceptible to moisture.

BSM always needs a protective surface layer to shield it from environmental and traffic damage. Thick asphalt, on the other hand, is a dense and strong material. It forms continuous layers, providing a smooth and waterproof surface for roads.

Both BSM and thick asphalt perform really well, but BSM has a unique advantage. Its granular composition gives it a special strength and flexibility. When loaded with weight, BSM distributes the stress effectively by packing the particles and preventing deformation in the wheel paths.

BSM is efficient in its use of resources. It requires less bitumen compared to thick asphalt. This results in lower overall costs, making BSM a cost-effective choice for road construction projects. BSM is produced at ambient temperatures, which saves energy and reduces costs even further when compared to asphalt.

Another advantage of BSM is its ability to work with a wide range of materials. It can

be used with various granular materials, reclaimed asphalt, previously stabilized materials, and even selected demolition waste. This versatility makes it a great choice for road rehabilitation projects, reducing the need for new aggregates.


In conclusion, BSM is an excellent alternative to thick asphalt when constructing new road pavement layers. It offers numerous advantages in terms of the environment, performance, efficiency, and cost-effectiveness. Choosing BSM is a wise decision.