Industry Terms

The following term definitions were provided by the Minnesota Asphalt Pavement Association and Asphalt Institute.

Asphalt cement

A mixture of crude petroleum used for paving, roofing, industrial and other special purposes.

Asphalt concrete

A mixture of asphalt binder and aggregate thoroughly mixed and compacted into a mass

Asphalt pavement

Asphalt concrete over supporting courses such as asphalt concrete bases, crushed stone, slag, gravel, Portland Cement Concrete (PCC), brick or block pavement.

Durability

The property of an asphalt pavement that represents its ability to resist disintegration by weathering and traffic.

Hot Mix Asphalt (HMA)

High quality, thoroughly controlled hot mixture of asphalt binder (cement) and well-graded, high-quality aggregate, which can be compacted into a uniform dense mass.

Hot Mix Asphalt (HMA) overlay

One or more courses of HMA over an existing pavement.

Reclaimed Asphalt Pavement (RAP)

Excavated asphalt pavement that has been pulverized, usually by milling, and is used like an aggregate in the recycling of asphalt pavements.

Sealcoat

A thin surface treatment used to improve the surface texture and protect an asphalt surface. The main types of seal coats are fog seals, sand seals, slurry seals, micro-surfacing, cape seals, sandwich seals and chip seals.

Subbase

A layer of aggregate of planned thickness and quality placed on the existing soil as a foundation for the base. Subgrade: The portion of a roadbed surface that has been prepared as specified, upon which a subbase, base, base course, or pavement is to be constructed.

Subgrade

The soil prepared to support a pavement structure or a pavement system. It is the foundation of the pavement structure.

Tack coat

The initial application of asphalt material to an existing asphalt or concrete surface to provide bond between the existing surface and the new material.

Viscosity

A measure of a liquid's resistance to flow with respect to time.

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BorderLines provides residential and commercial pavement services in the Twin Cities’ North Metro area.

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