Road Performance and Emission Reduction Effect of Graphene/Tourmaline-Composite-Modified Asphalt

Tengteng Guo,Aijiu Chen,Hao Fu,Qing Wang,Yuanzhao Chen,Haijun Chen,Zhenxia Li,Qian Chen,Chaohui Wang

doi:10.3390/su13168932

Abstract

The purpose of this study is to further improve the road performance and emission reduction effect of tourmaline-modified asphalt. Graphene was used to enhance the performance of tourmaline-modified asphalt, and graphene/tourmaline-composite-modified asphalt was prepared. The temperature susceptibility, high temperature, anti-aging properties and rheological performance of the modified asphalt were studied. The test method of emission reduction efficiency of the modified asphalt and its mixture was proposed. The emission reduction effect of different modified asphalts and its mixture was evaluated. The enhancement effect of graphene on the properties of tourmaline-modified asphalt was confirmed. It provides a reference for the performance enhancement of inorganic material modified asphalt. The results show that the temperature susceptibility, high temperature, anti-aging properties and rheological performance of the graphene/tourmaline-composite-modified asphalt are better than those of the tourmaline-modified asphalt and base asphalt. The asphalt fume reduction rate of graphene/tourmaline-composite-modified asphalt is higher than that of tourmaline-modified asphalt. With the increase of graphene content, the emission reduction performance increases gradually, and the enhancement effect of graphene on tourmaline performance is more obvious.

Highlights

With the vigorous development of highway transportation, people put forward higher requirements for the service performance and quality of pavement [1,2,3]
Most polymer modified asphalts need to be prepared at higher temperatures, which has the disadvantages of high cost, complex equipment and preparation process [4,5]
According to the orthogonal test scheme, graphene/tourmaline-composite-modified asphalt was prepared by using different process parameters

Summary

Introduction

With the vigorous development of highway transportation, people put forward higher requirements for the service performance and quality of pavement [1,2,3]. Most polymer modified asphalts need to be prepared at higher temperatures, which has the disadvantages of high cost, complex equipment and preparation process [4,5]. Inorganic material modifiers can improve the interface between asphalt and mineral aggregate and asphalt pavement performance, and has the characteristics of simple production process, low price, excellent performance and rich reserves. It has been more and more favored by pavement researchers [6,7,8,9,10,11]

Objectives

Methods

Results

Conclusion