TRMAC  - Tire Rubber Modified Asphalt Cement

Wright’s Tire Rubber Modified Asphalt Cement (TRMAC™) Technology is an absorption process that completely digests and incorporates recycled, whole scrap ground tire rubber into asphalt cement.  The TRMAC™ system is manufactured within a terminal facility environment, which provides the ability to control the quality of the entire process and certify the end-products.  Wright’s laboratory facilities provide the structure to continually test, quality control and certify 24 hours a day, which assures excellent consistency in processing and in the final products manufactured.

The TRMAC™ process provides the building block for all of Wright’s Terminal Blended tire rubber modified asphalt products.  The process meets ASTM Solubility Specifications and can be formulated to meet any PG-Grade Super Pave Specification.

Polymer Modified TRMAC™  Products

The products created with the TRMAC™ process are compatible with and are a plasticizer for additional polymer modifications.  Styrene-Butadiene-Styrene polymer (SBS) is used in some TRMAC™-based products to enhance the elastic recovery and ductility strengths of the finished product.  The SBS polymer in combination with the TRMAC™ process produces a finished product that adds greater adhesive strengths to roads and aggregate surfaces, maintaining a tough bond and cohesive strength over time. Products created with the TRMAC™ process exhibit excellent resistance to high temperature rutting and aging while still maintaining cold temperature flexibility.

Performance-based Specifications

The TRMAC™ process was developed to produce higher-quality products that last longer and provide superior performance. The TRMAC™ is then blended into various finished tire rubber products, which are used for pavement maintenance (high performance chip seals and surface sealers) and construction (high performance hot mix binders).

For more information on our TRMAC™ Process or to discuss your pavement maintenance or construction project with Wright Asphalt, give us a call at 281-452-9084.

Did You Know...

The TRMAC™ process disperses a 25% concentrated tire rubber particle into asphalt cement at a size that is measured between 0.5 to 1.0 microns.

See how the particle size distribution compares TRMAC™ to other materials in the chart below.

Particle Size Chart (microns)
One Inch 25,400
40 mesh silica sand 425
200 mesh sieve screen 75
Mold 3 - 12
Mustard 6 - 10
Face Powder 1 - 30
Talcum Dust 0.5 - 50
Bacteria 0.3 - 40
Antrax 1 - 5
TRMAC™ Asphalt Cement 0.5 - 1
Sea Salt 0.035 - 0.5
Viruses 0.05 - 0.3