Uniformity evaluation of asphalt pavements in hot and humid areas based on ground-penetrating radar

Abstract

Rapid and accurate detection of asphalt mixture state such as air void content and uniformity, is beneficial for enhancing the construction quality and efficiency. This study aims to effectively evaluate asphalt pavement uniformity using ground-penetrating radar in hot and humid environments. The results show that with an increase in the temperature and humidity of the asphalt pavement, the dielectric constant increased and the air void content decreased. The established dielectric constant–air void content model can be used to quickly detect the air void content of asphalt pavements. Separation evaluation indexes based on the air void content can be used to evaluate the uniformity of asphalt pavements in hot and humid areas. This study provides ideas for evaluating the uniformity of asphalt pavements in hot and humid areas and lays the foundation for accurate control of asphalt pavement construction quality.