Performance evaluation of tourmaline modified asphalt mixture based on grey target decision method

Abstract

Tourmaline modified asphalt mixture has the air purification effect and is an excellent low-carbon road material. However, previous studies mainly focused on the improvement of road performance for tourmaline modified asphalt mixture. There were few studies on its comprehensive performance evaluation. In order to further promote the application of tourmaline in the field of modified asphalt mixtures, tourmaline modified asphalt mixture was prepared. The comprehensive performance evaluation system for tourmaline modified asphalt mixture was established based on the grey target decision method. Based on two mixing methods, the road performance of tourmaline modified asphalt mixture were systematically analyzed, the comprehensive performance of tourmaline modified asphalt mixture was evaluated, the suitable content of tourmaline in the modified asphalt mixture was determined. The results show that the comprehensive performance evaluation system based on grey target decision method has good reliability and practicability. The comprehensive performance of tourmaline modified asphalt mixture achieves its best with 10% tourmaline.