TEMPERATURE IMPACT ON PAVEMENT STRUCTURES IN HOT ARID ENVIRONMENT
Temperature is one of the most important factors affecting the design and performance of both flexible and rigid pavements. Temperature variations within pavement structure contribute in many different ways to distress and possible failure of that structure. Knowledge of temperature effects is essential for the determination of the design and maintenance requirements especially in the desert climates like most of Saudi environment.
This paper presents the results of different research studies that were carried out locally to explore the trends of temperature variation in both rigid and flexible pavement slabs in the arid Saudi environment and their implications on the design and material selection. Results indicated that temperature effects on both flexible and rigid pavements can not be ignored in design and analysis since high ranges were observed such as a maximum temperature differential of 15° C in rigid pavements whereas, flexible pavements are subjected to temperatures ranging between 3°C to 72°C. Maximum pavement temperature was recorded at a depth of 2 cm.
KEYWORDS: pavement, flexible, rigid, apron, curling stress, SHRP, ILLI-SLAB, temperature.