Unique aspects of the design and construction of the Bristol motor speedway CRC pavement

The reconstruction of the Bristol Motor Speedway (BMS) track surface presented some unique challenges to the placement of a continuously reinforced concrete (CRC) pavement. Due to the steep embankments of the radial sections, it was not feasible to use a traditional type of bond breaker to isolate the CRC from the subbase layer and so it was determined to bond the CRC to the base and eliminate the interlayer from the pavement section. Reflection cracking from the subbase was a concern and as a counter measure special crack control precautions were taken to insure the uniformity of the crack pattern using early aged crack control which required additional modifications to the sawing equipment to adopt it to the geometry of the track. The design of the steel was also configured to account for the bonded condition and the geometry of the track.