The pavement layer constructed between the base and
subgrade in a fl exible pavement system, or the layer
often found beneath a concrete surface in a concrete
pavement system.
Concrete is a fundamental material for airport runways, highways, and streets. Concrete pavements are used for general paving needs such as driveways, parking lots and playgrounds.
Deciding which cement-based materials are best to employ depends on the project.
Pavement systems containing cement-bound layers
have been used worldwide for over a century, with
great success. Portland cement can be used in virtually
every layer in a pavement system. Typical applications include improving the quality of subgrade soils
and stabilizing base materials.