High-performance composite modified asphalt

Abstract

The invention which relates to high-performance composite modified asphalt belongs to the road traffic building field. The composite modified asphalt is characterized in that the composite modified asphalt comprises lake asphalt and rubber asphalt or modified rubber asphalt according to a weight ratio of 1-2:4-3. A production technology of the composite modified asphalt comprises the following steps: 1, heating the lake asphalt to above 175DEG C, and stirring it in each tank; 2, heating the rubber asphalt or the modified rubber asphalt to 170-185DEG C; and 3, pumping the lake asphalt and the rubber asphalt or the modified rubber asphalt into a stirring device according to a proportion, and stirring them for 25-50min to obtain a mixture which is the composite modified asphalt. By compositing and modifying natural asphalt (the lake asphalt) and the rubber asphalt in the invention, the composite modified asphalt has the following beneficial effects: the compatibility of the composite modified asphalt is good, and use performances of the asphalt-asphalt mixture are improved; and compared with polymer modified asphalt, the composite modified asphalt has unique advantages. So, the composite modified asphalt is a new approach and a new method to solve early-stage damages of asphalt pavements.

Description

technical field [0001] The invention belongs to the field of highway traffic construction. Background technique [0002] In recent years, with the completion of the high-grade highway network, the traffic volume has increased greatly. Due to the rapid development of highway construction, the proportion of passenger and cargo volume and passenger and cargo turnover completed by road transportation has increased significantly, which has promoted The rapid growth of our national economy. However, the ensuing heavy load and overloading phenomenon are becoming more and more serious, especially in the traffic composition of some important national highways, the proportion of heavy-duty vehicles is relatively large, and the overloading phenomenon is very serious. At the same time, it is affected by the geology, The influence of natural and human factors such as hydrology and meteorology causes the asphalt pavement to have early damage such as rutting, wrapping, and potholes. It a...

AI Technical Summary

Problems solved by technology

Since 2003, the direct economic loss caused by heavy loads in Beijing has reached 760 million yuan, and the phenomenon of heavy loads and overloads has caused the highway to enter the overhaul period ahead of time, greatly increasing the maintenance cost of the highway, which has affected the traffic efficiency, and the rutting depth of some road sections has reached 14cm, seriously Affect driving safety

These problems will have adverse effects on the development of modified asphalt