Hot Mix Asphalt

Typical Composition of Asphalt Shingle

  Typical Asphalt Shingle Composition

  • 20-30% asphalt binder
  • 40-60% hard aggrregates
  • 5-15% fibers
  • Useful quantities of sand to prevent binding

Reduced HMA Cost

The use of RAS in HMA can significantly lower production costs by substituting RAS  for virgin binder up to 5% per TxDOT specifications. Using the proper amount of RAS allows the producer to "grade dump" and use a lower cost binder.   RAS can help save upwards of 2% per ton. 

Why Use RAS?

  • RAS conserves imported natural resources
  • RAS reduces landfill space
  • RAS is 'Green" It is the right think to do
  • RAS is locally sourced and has direct impact on local economy
  • RAS saves money up to 2% per ton 

RAS in Road Construction

Recycled Shingle Roads

RAS makes an inexpensive road surface.  It will not sink like aggregate, is quiet and performs much like asphalt for a fraction of the cost.

Before: Road Condition

An example of poor drainage on a base road.  Aggregates have been replaced, but once again they are beginning to sink below grade.

After: Road Condition

The solution is RAS.  Low spots have been filled and now prevents the buildup of mud.  RAS provides a hard surface that repels water.  

RAS for dust control

RAS has been a proven dust control material for many years.  Graded, but not rolled out, RAS has been proven to stabilize the roadbed for up to two years. 

Dual Road Dust Control

Notice the dusty road on the left?  There are two trucks.  The road on the right is paved with RAS. 

Dual Road Two Years Later

Here is the same location in 2018.  It has been two years and the road is performing very well.