High-performance modified asphalt based on graphene and manufacturing method

Abstract

The invention provides high-performance modified asphalt based on graphene and a manufacturing method. The high-performance modified asphalt consists of 70# matrix asphalt, graphene and stearamide; and the mass matching relationship of the 70# matrix asphalt, graphene and stearamide is as follows: the mass of the graphene is 20% that of the 70# matrix asphalt, and the mass of the stearamide is 1%that of the graphene. The high-performance modified asphalt has the beneficial effects that the high-performance modified asphalt based on graphene which is applicable to industrial production and themanufacturing method are provided.

Description

technical field [0001] The invention relates to a modified asphalt production technology, in particular to a graphene-based high-performance modified asphalt and a production method. Background technique [0002] Highway construction is an important indicator to measure the development of the national economy. In recent years, my country's highway construction has made great progress. By the end of 2014, the total mileage of my country's highways had exceeded 4.45 million kilometers, ranking first in the world; among all highway construction mileage, asphalt The pavement occupies the vast majority. Due to factors such as increased traffic volume, large-scale vehicles, heavy vehicle loads, and temperature differences, rutting and cracking on the asphalt pavement may occur from time to time, resulting in a decline in the performance of the asphalt pavement. Higher requirements are put forward for the performance and quality of the asphalt pavement. It is hoped that the applicati...

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Problems solved by technology

[0003] At present, the development of SBS modified asphalt is the most beneficial to the improvement of asphalt pavement; practice shows that adding SBS modifier to base asphalt can significantly improve the high temperature stability, fatigue resistance and temperature sensitivity of the pavement; but in practice In application, SBS modified asphalt has problems such as high requirements for preparation conditions, unstable storage (easy to delaminate, coagulate or segregate), and difficult mixing construction, which leads to poor controllability of the quality of asphalt and asphalt mixture, which affects to a certain extent performance on asphalt roads

[0004] Graphene is a nano-material with huge specific surface area and super surface activity. Experiments have proved that adding graphene to asphalt can have a special effect on the physical and chemical properties of asphalt, thereby improving the performance of asphalt; however, in In actual production, it is impossible to directly add graphene to asphalt: experiments have shown that when the amount of graphene added reaches a certain level, graphene will have serious agglomeration problems, and graphene cannot be dispersed evenly in asphalt, resulting in graphene being unable to Modification effect on asphalt

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