Modeling resilient modulus and temperature correction for Saudi roads

Temperature is one of the most important factors affecting the design and p erformance of pavement. Temperature variations within the pavement structur e contribute in many different ways to distress and possible failure of tha t structure. The structural performance of pavements is highly dependent on temperatures to which these pavements are exposed. Under loading condition s, the pavement temperature is a major factor affecting the deformation res ponse of bituminous structures. The load-spreading characteristics depend o n the moduli of temperature-sensitive layers whose strength is significantl y reduced by increased temperature. Variations of temperature across paveme nt depth must be considered in the back-calculation of flexible pavement la yer moduli. This paper presents the results of a comprehensive study that w as carried out to explore trends of temperature variation in an arid enviro nment and their implications on the moduli of flexible pavements. Temperatu re correction factors and resilient modulus estimation equations from basic material physical properties were developed using statistical procedures t o a high degree of reliability.