As the name implies, continuously reinforced concrete (CRC) pavement is a rigid pavement constructed with continuous longitudinal reinforcement. No transverse joints are installed. Instead, the pavement is allowed to develop random transverse cracks, and the steel reinforcement holds the cracked sections together. The size and spacing of the cracks are influenced by the percentage of reinforcing steel used. Current practice calls for 0.6 to 0.7 percent of the slab cross-section area. The design of the reinforcement is covered in the AASHTO Pavement Design Guide. The thickness of the slab is determined the same way as for other concrete pavements.
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FIGURE 3.7 Typical preformed joint seal in rigid pavement. Conversion: 1 in = 25.4 mm.
