PRODUCTS: Armorstone®

Crack Seal Sand

Epoxy Overlay Aggregate

Armorstone® is an enhanced-friction surface course used in bridge deck, parking deck, driveway, and sidewalk overlays and road surfacing.

Armorstone overlay aggregate makes roads safe and durable.
Bridges and roads wear down over time due to traffic, weather damage, and chemical corrosion. To extend the lifetime of a road surface, transportation agencies will often lay epoxy polymer over the road. The epoxy is topped off with small, hard stones to add friction and prevent skidding on the slick epoxy layer. These stones are referred to as overlay aggregate or wearing course.

Armorstone is a durable, anti-skid overlay aggregate that meets the standards of over 40 state agencies.

We offer several varieties:

Armorstone meets the Federal Highway Administration’s (FHA) recommendations.
Armorstone is polish resistant, abrasion resistant, and durable per FHA recommendations. It is also rigorously washed, dried, and graded before bagging. The FHA’s tough specifications make friction-wearing course challenging to manufacture in the United States. Armorstone is one of the few products in the U.S. that meets these specs.

Armorstone is a strong, affordable alternative to calcined bauxite.
Although calcined bauxite is typically recommended for its hardness and durability, it usually has to be imported from overseas, which makes it more expensive.

As an alternative to calcined bauxite, Washington Rock developed Armorstone overlay aggregates. Our Armorstone products average a 7 on the Mohs hardness scale and meet or exceed other testing standards.

Armorstone products have been used on several high-profile projects, including the following:

Armorstone meets the standards of over 40 state agencies.
Armorstone has also been accepted by most state DOTs as a satisfactory alternative to calcined bauxite. Armorstone meets the standards of the American Association of State Highway and Transportation Officials (AASHTO).

We deliver to US territories in addition to all fifty states.
Washington Rock has delivered overlay aggregates most U.S. states, including Hawaii, and as far as St. Thomas in the Virgin Islands.

Armorstone is available in Super Sacks and 50-pound bags.
We deliver the majority of our products in four-panel Super Sack containers. They are made of a woven polypropylene container that is 100% recyclable. We can also make and palletize 50-pound bags.

We work with epoxy manufacturers.
Our clients include E-Chem LLC, Sika USA, FasTrac Construction Products, The Euclid Chemical Company, and POLY-CARB by Olin Epoxy.

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