A Continuous Reinforced Concrete Pavement (CRCP) Overlay for the Torrejon By-pass

The article details the assessment and implementation of a Continuous Reinforced Concrete Pavement (CRCP) overlay for the Torrejon by-pass near Madrid, Spain. Initially built in 1966, this 7 km bypass was a jointed plain concrete pavement (JPCP) designed without expansion joints, with dowelled contraction joints placed at 6 m intervals. Over the years, various surveys and studies were conducted to assess the pavement's condition and determine the necessity and type of overlay required. The 1986 assessment suggested that the pavement performed better than expected, with no immediate need for an overlay, but recommended several maintenance actions to extend its service life. By 1994, further distress in the pavement prompted a reevaluation of overlay options. The final choice was a 24 cm CRCP overlay, selected for its long-term durability and economic feasibility compared to other solutions. This decision was made after considering the evolution of pavement distress, including joint and slab conditions, and conducting an economic analysis of potential overlays with lifespans ranging from 10 to 35 years. The chosen solution aimed at addressing the existing pavement's structural issues while ensuring compatibility with the widening necessary for increased traffic demands. The implementation of traffic management measures during construction was also detailed, highlighting the project's comprehensive approach to maintaining traffic flow while enhancing pavement performance and longevity. (Abstract generated by AI tool ChatGPT 4)