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 4% 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 on binder and allows for grade dumping

Proprietary mix designs with RAS

RAS Paving Mix

RAS Mixed with Base

RAS Paving Mix

This street was paved 50/50 with cold patch. The road has been down for two years and is still performing well.

RAS Patching

RAS Mixed with Base

RAS Paving Mix

RAS with cold patch. Using RAS with cold patch extends the yield while using recycled product.

RAS Mixed with Base

RAS mixed with base. Combining 3/4 base with RAS for a smooth dust free road. The RAS mixes and hardens into the base fines for a smooth dust free road surface.

Atascosa County

Blending Product

RAS Mixed with Base

RAS combined with screened millings makes the perfect road. The RAS fills voids and hardens the surface much better than millings alone.

Blending Product

This is our mix design for driveways and ranch roads. Our 3/8 minus RAS is combined with screened and graded millings to make a superior surface.

Gradation

Blending Product

We get screened millings to combine with our 3/8 minus RAS. Due to the high oil content of 20% with the RAS, it makes the final product much better

RAS in Road Construction

Recycled Shingle Roads

Before: Road Condition

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

Before: Road Condition

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

Dual Road Two Years Later

After: Road Condition

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

Dual Road Two Years Later

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 2020. It has been close to four years and the road is performing very well.