Field Study of Performance of Continuously Reinforced Concrete Pavements: Fid-Bau Portal

Field Study of Performance of Continuously Reinforced Concrete Pavements

K. Majidzadeh

In this report, the results of field observations of CRC pavements constructed in the state of Ohio are presented. The field performance parameters such as deflection, moduli variability, support conditions, crack spacing and pattern and drainage conditions are evaluated and related to pavement structural conditions. The results of pavement core strength data are utilized to develop interrelations between material properties and life expectancy of the CRC pavement structure. The concept of concrete maturity and the strength-maturity relations are used as a basis for a proposed design scheme. The results of field curing conditions and the effects of curing methods on the crack spacing and pattern have been investigated. This field study has shown that the crack spacing and pattern is independent of curing conditions and is mostly affected by the climatic condition prevailing during construction. It is also shown that in CRC pavements constructed using soil-cement or lime-flyash mixture, the transverse cracks in the pavement structure have, in all instances, penetrated into the base course. (Modified author abstract)