Lafarge is committed to being the leading developer and supplier in North America of innovative asphalt products designed to optimize quality, performance, durability, and sustainability.
Duraphalt HM® (High Modulus) is a heavy duty asphalt based on stone mastic asphalt technology designed to reduce wheel rut damage caused by heavy and/or slow moving vehicles.
Technical Benefits of Duraphalt® HM
Improved fatigue resistance and durability
Enhanced tire noise reduction
Increased safety through enhanced macro texture, providing spray reduction and increased skid resistance
Improved design life by a minimum of four years
Improved life-cycle costs through maintenance cost reductions
Duraphalt HM consists of a stone-on-stone aggregate skeleton with a mastic comprising mineral filler, fiber or asphalt shingle modifier (ASM), and Glossary Performance Graded Asphalt Cements (PGAC) and/or polymer-modified asphalt (PMA) cement. The stone-on-stone aggregate skeleton (gap-graded) provides excellent rut resistance against very heavy slow-moving wheel loads, and the mastic coats the coarse aggregate, creating a very high film thickness for exceptional durability.
The use of polymer-modified asphalt is recommended for heavy-duty commercial and industrial applications, such as industrial estates, ports, docks and container areas, warehouses, and commercial premises.
Duraphalt HM may also be used for pavement applications where heavy goods vehicle (HGV) distress has caused damage and failures with more conventional hot mix asphalts, especially at intersections and traffic circles and areas where wheel track rutting is an issue.