Describe the basic types of highway concrete pavements and give the conditions under which each type will be constructed.

Question

What will be an ideal response?

Answer 1

Rigid highway pavements can be divided into three general types: plain concrete
pavements, simply reinforced concrete pavements, and continuously reinforced
concrete pavements.
Plain concrete pavements have no temperature steel or dowels for load transfer.
This type of pavement is used mainly on low-volume highways or when cement
stabilized soils are used as subbase material. Joints are typically spaced at
intervals of 10 ft to 20 ft to control cracking. This type is sometimes referred to as
jointed plain concrete pavement (JPCP).
Simply reinforced concrete pavements have dowels for the transfer of traffic loads
across joints, with these joints spaced at larger distances than with plain
pavements, ranging from 30 ft to 100 ft. Temperature steel is used throughout the
slab.
Continuously reinforced concrete pavements have no transverse joints, except
construction joints or expansion joints when they are necessary at specific
positions, such as at bridges. This type of pavement is typically used on highvolume,
high-speed roadways. In design this type is often simply referred to as
CRCP.