Temperature effects on a mixture of asphalt concrete

Abstract

This study aims to evaluate the impact of temperature on the stability and flow properties of asphalt concrete through tests conducted in accordance with the DLT Standard Specification No. 408/2532. The mix designs were prepared with air void contents of 3.0%, 3.1%, and a range between 3.4–5.0%. Specimens were tested at temperatures of 50°C, 60°C, and 70°C, respectively. The results indicate that the specimens tested at 50°C exhibited the highest stability across all air void levels. Conversely, the flow values showed an increasing trend with rising temperatures, with the highest flow observed at 70°C. These findings reveal a negative correlation between stability and temperature, highlighting the importance of considering temperature effects when designing asphalt concrete pavements, particularly for regions subjected to high thermal conditions.