Types of Pavement Systems Overview

The tack coat in a flexible pavement system is applied at a rate of 0.50 to 0.75 liter/m2 for new pavement.

Semi Rigid Pavements with ATB include an unbound sub-base layer.

Jointed Reinforced Concrete Pavement (JRCP) typically has continuous longitudinal reinforcement.

Inverted section composite pavements include an unbound base layer.

Flexible pavements in the U.S. make up more than 90% of all paved roads.

Rigid pavements typically include tie bars to prevent cracks.

Flexible pavements typically have a binder course made of coarse asphalt mix.

Rigid pavements always include a subbase course made of sandy or sandy gravel soils.

Flexible pavements have a base course that is 4 to 12 inches thick.

Rigid pavements typically have a surface course of fine asphalt mix.

Semi Rigid Pavements with ATB always include an asphalt concrete layer as the surface course.

Flexible pavements resist distortion under traffic loading but do not provide smoothness, friction, and drainage on the surface.

Rigid pavements have tie bars to distribute load to the base course.

Jointed Reinforced Concrete Pavement (JRCP) typically has a longitudinal joint with tie bars.

Composite Pavements Type 1 include existing rigid pavement as the base course.

Flexible pavements always have a tack coat applied at a rate of 0.10 to 0.20 liter/m2 for new pavement.