Extend Asphalt Serviceability with a High Density Mineral Bond Surface Treatment

The Most Cost-Effective Strategy for Managing Asphalt Pavement

HA5® was developed to meet the demand for effective asphalt preservation on residential roadways without the negative side effects of chip seals or slurry seals. Specifically engineered to preserve the native asphalt binder, HA5 is exceptional at preventing oxidative damage. As a result, you will have streets that last longer and cost less to own.


Research Unveils a Remarkable 67% Delay in Age Hardening

Due to the asset preservation qualities and durability of the installations, HA5 is in use by over 200 public agencies for asset preservation.

Research has shown:

  • Reduced oxidative hardening of the native binder resulting from protection by the HA5 treatment
  • Extension in life (or a slowdown of oxidative aging, or reduction in age hardening) of ~67%.

These results indicate that the HA5 treatment indeed slows down the oxidative aging process resulting in a significant extension in life.

Benefits to you:

  • Significantly extends pavement life
  • Lower cost of pavement ownership/management
  • No loose aggregate or grainy residue on the surface post installation
  • Millions of square feet installed by municipalities
  • Performance backed by seven year study
  • High public approval

What is HA5?

HA5 is a High Density Mineral Bond uniquely emulsified with a near-neutral charge that is able to hold exceptionally high concentrations of fine aggregates and other components that resist deterioration.

Limiting oxidative damage from moisture is fundamental to HA5’s preservation qualities. But just as critical to the prevention of oxidative damage from moisture is preventing oxidative damage from Ultraviolet (UV) radiation.

HA5 features include:

  • A specialized, non-ionic emulsion specifically engineered to carry mineral types that are not compatible with anionic and cationic emulsions.
  • A blend of ultra-dense, angular-shaped fine aggregates formerly unavailable in a thin surface treatment.
  • A combination of specific polymers that combat oxidation by deflecting Ultra-Violet Rays.


For HA5 to be properly installed, specialized equipment is required that can uniformly disperse a thixotropic material housing the required density of fine aggregate.

Tested, Proven Performance

Research Results

The former head of pavement materials at the country’s largest state DOT published research findings that identified pavements with HA5 High Density Mineral Bond installed had a 67% delay in the age-hardening of the asphalt. Keeping asphalt flexible prolongs the useful life of the pavement and reduces cracking resulting from pavements becoming brittle.

9X Less Cracking

People like black roads, but simply turning a road black does not necessarily equate to effectively extending the useful life of asphalt pavement.

Six years ago, an evaluation was completed comparing HA5’s performance in a side-by-side comparison with another treatment. On one section, a commercially available polymer-enhanced asphalt emulsion was installed within a week of an adjoining HA5 installation.

The original paving of both sections was done as one project nine years before the side-by-side maintenance treatments were installed.

Each of the treated sections had multiple crack samples taken. The HA5 treated section had sample areas examined that calculated to an average .007 of the surface experiencing cracking and the polymer enhanced asphalt emulsion sampled road surface was found to have .06 of the area with cracking. That’s an astounding 857% more cracking in the non-HA5 treated pavement compared to the road having had HA5 installed.