Longer Life

ACE XP Polymer Fiber  is a true achievement in asphalt additive technology to enhance performance.

To create ACE XP Polymer Fiber (ACE XP), Surface Tech blends aramid fibers and Sasobit wax to address the 2 major distresses affecting asphalt performance today; cracking and rutting. Doing so also dramatically improves the treated roads’ life expectancy. When ACE XP is mixed into asphalt, it disperses over 19 million Aramid fibers throughout each ton of mix to provide 3-dimensional reinforcement that increases the asphalt’s resistance to reflective cracking, rutting, fatigue and increased life expectancy. And best of all, no specialty contractors are needed for installation. Contractors handle ACE XP reinforced asphalt the same way they handle standard asphalt. This underscores ACE XP’s technology in being easy to adopt.

See for yourself. Watch the video below.

How it Works

How does ACE XP Polymer Fiber make asphalt more durable?

Many fibers have been successfully used to reinforce asphalt, but it takes a special polymer fiber to successfully reinforce 350 degree asphalt. Aramid is a unique polymer fiber with 400,000 psi tensile strength and micro-roots that tenaciously anchor themselves in the bitumen of the asphalt. In the summertime when asphalt gets hot and wants to rut, the rooted aramid provides resistance to the “flow” of asphalt to mitigate rutting. In the wintertime when asphalt is cold and wants to shrink, aramid provides added tensile strength for resistance to cracking. The bottom line is that polymers fibers in asphalt now make sense because of aramid, and for relatively low cost, ACE XP makes a big performance improvement in asphalt.

Technology Behind Ace XP Polymer Fiber

ACE XP Polymer Fiber extends pavement service life by dramatically improving the dynamic modulus of the asphalt layer and increasing the asphalt’s resistance to cracking and rutting (distresses that may cause premature failure). To create ACE XP, high-strength man-made “aromatic polyamide” or Aramid Fibers are bundled and coated with Sasobit® wax to create an asphalt concrete additive that is simple to mix with any WMA or HMA in drum and batch asphalt operations. The 3-dimensional reinforcement throughout the asphalt layer increases the asphalt’s resistance to cracking, rutting, and fatigue while providing improved ESAL capacity. Any asphalt project can benefit from ACE XP including both newly constructed asphalt pavements as well as thin asphalt overlay projects over deteriorated asphalt or concrete pavements.

Drastically decreased rutting
Significant increase in strength
Improved crack resistance
Significant increase in fatigue life
Reduced thermal cracking
Individual coated Aramid clips provide superior control of the Aramid into the mix
Provides superior/thorough disbursement of Aramid into the mix
Completely dissipates in the mix at a flash temp of 230℉; no effect on Aramid once melted

Material Properties

Aramid Fiber Reinforcement. Provide ACE XP (pre-treated, Sasobit wax coated, aramid fiber) conforming to the requirements adjacent. Design asphalt mix without fiber and do not alter the final mix design for the addition of fiber at the plant. Use the dosage rate of 4.2 oz. coated weight per ton of asphalt mix (of which 2.1 oz. is pure aramid). The fiber addition tolerance allowed shall be no less than 4.2 oz. coated weight (2.1 oz. pure aramid) and not more than 4.62 oz. coated weight (2.31 oz. pure aramid) per ton of asphalt mix. Please note that ACE XP contains 50% actual aramid fiber and 50% actual Sasobit wax, by weight. This pretreated, Sasobit wax coated fiber remains in the form of a dry fiber strand with over 10,000 individual fibers / strand that is efficiently conveyed to the asphalt mixing drum. In the mixing drum, the Sasobit wax completely melts allowing the dry fibers to disperse into the HMA or WMA asphalt mix.

Use Less, Save More

A reduction in thickness is achievable; the amount depends on field circumstance.
An amount to render the ACE XP cost-neutral is a good recommendation; still leaving much of the benefits for longer life and rutting/cracking reduction in tact.
See your area representative for more exacting details.

Engineered for Performance


ACE XP Polymer Fiber provides extra performance for asphalt by increasing service life, saving costs, or a combination of both. Similar to certain fibers successfully used in concrete for decades, ACE XP Polymer Fiber is now used in asphalt to significantly increase performance of new asphalt pavements and overlays. ACE XP Polymer Fiber makes asphalt stronger than steel and adds strength to pavement in all directions.

Frequently Asked Questions