3 BASIC TYPES OF CONCRETE PAVEMENT

Types of Concrete Pavement

In pavement construction, three different concrete pavement design types are commonly used:

  1. Jointed Plain Concrete Pavements (JPCP),
  2. Jointed Reinforced Concrete Pavements (JRCP), and
  3. Continuously Rein­forced Concrete Pavements (CRCP)

Each of these design types can provide long-lasting pavements that meet or exceed specific project requirements. Each type is suitable for new construc­tion, reconstruction, and overlays (resurfacing) of existing roads.

1. JPCP [Jointed Plain Concrete Pavement]

Because of their cost-effectiveness and reliability, the vast majority of concrete pavements constructed today are JPCP designs. They do not contain reinforcement. They have transverse joints generally spaced less than 5 to 6.5 m (15 to 20 ft) apart. They may contain dowel bars across the transverse joints to transfer traffic loads across slabs and may contain tie bars across longitudinal joints to promote aggregate interlock between slabs.

JPCP - Jointed Plain Concrete Pavement
JPCP – Jointed Plain Concrete Pavement

2. JRCP [Jointed Reinforced Concrete Pavement]

JRCP designs contain both joints and reinforcement (e.g., welded wire fabric, deformed steel bars). Joint spacings are longer (typically about 9 to 12 m [30 to 40 ft]), and dowel bars and tie bars are used at all transverse and longitudinal joints, respectively.

JRCP - Jointed Reinforced Concrete Pavement
JRCP – Jointed Reinforced Concrete Pavement

The reinforcement, distributed throughout the slab, composes about 0.15 to 0.25 percent of the cross-sectional area and is designed to hold tightly together any transverse cracks that develop in the slab. It is difficult to ensure that joints are cut where the rein­forcement has been discontinued. This pavement type is not as common as it once was on State highways, but it is used to some extent by municipalities.

3. CRCP [Continuously Rein­forced Concrete Pavement]

CRCP designs have no transverse joints, but contain a significant amount of longitudinal rein­forcement, typically 0.6 to 0.8 percent of the cross-sectional area. Transverse reinforcement is often used. The high content of reinforcement both influences the development of transverse cracks within an acceptable spacing (about 0.9 to 2.5 m [3 to 8 ft] apart) and serves to hold cracks tightly together. Some agencies use CRCP designs for high-traffic, urban routes because of their suitability for high-traffic loads.

CRCP - Continuously Rein¬forced Concrete Pavement
CRCP – Continuously Rein¬forced Concrete Pavement
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