Asphalt, Paving & Construction
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Duraphalt HM®

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.

 

Product Overview

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.

 

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

 

Performance
Duraphalt HM has been subjected to a rigorous performance testing regime, providing the following performance results:

 

1. Wheel-rut test depths less than or equal to 5.0mm and 8.0mm after 8,000 cycles at the standard high temperature using the Asphalt Pavement Analyzer Wheel Rut Test (APA WRT) for heavy-duty application and medium-/light-duty applications, respectively, AASHTO TP 63.

 

2. A minimum fatigue resistance to failure of 150,000 cycles at 480µm and 18 degrees C, AASHTO T 321.

Paving with Duraphalt HM

Duraphalt HM paving on Crowchild. Calgary, Alberta

Duraphalt HM for heavy industrial use

Duraphalt HM paving for heavy-duty industrial applications

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Durapave®

Lafarge Asphalt is committed to being North America's leading developer and supplier of innovative Asphalt products designed to optimize quality, performance, durability, and sustainability. Each of the products in our Durapave® series offers unique performance characteristics designed to address a range of needs such as moisture damage, high axle loading and sound attenuation. At the heart of all of our Asphalt products is research, testing  and development, ensuring the highest end performance is delivered.

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