Road asphalt prepared by adding plant asphalt to petroleum asphalt and production method thereof

Abstract

The invention relates to a road asphalt prepared by adding plant asphalt to petroleum asphalt and a production method thereof, belonging to the field of communications and transportation. The road asphalt is prepared from the following raw materials in parts by weight: 100 parts of petroleum asphalt, 20-100 parts of plant asphalt, cellulose or starch, and rosin, wherein the ratio of cellulose or starch to plant asphalt is 0.01-0.1, and the ratio of rosin to plant asphalt is 0.01-0.03. The plant asphalt and petroleum asphalt (or rubber asphalt, rubber modified asphalt) have favorable compatibility under the actions of the stabilizer and tackifier, thereby improving the service performance of the asphalt and asphalt mixture; and thus, the invention provides a new way and new method for substituting for part of petroleum asphalt. The road asphalt provided by the invention has high viscosity and high softening point; and the on the premise of good mix design, the asphalt mixture has certain high-temperature stability, and can enhance the rutting deformation resistance of an asphalt concrete pavement with high temperature and heavy-load traffic.

Description

technical field [0001] The invention belongs to the field of transportation and relates to an improvement of road construction materials. Background technique [0002] According to the "Twelfth Five-Year Development Plan for Transportation" issued by the Ministry of Transport, my country plans to reach 108,000 kilometers of expressways by the end of the Twelfth Five-Year Plan, covering more than 90% of cities with an urban population of more than 200,000, and my country's population exceeds 20 Wan's cities will all be connected by highways. The mileage of secondary and above roads has reached 650,000 kilometers, the overall technical condition of national and provincial roads has reached a good level, and the total mileage of rural roads has reached 3.9 million kilometers. By the end of 2010, the mileage of my country's expressways had reached 74,000 kilometers, and 450,000 kilometers of highways above Class II. On the other hand, in recent years, with the completion of the...

AI Technical Summary

Problems solved by technology

Due to the heavy traffic and serious damage to road conditions, many completed highways have entered the period of overhaul and expansion. In the near future, there will be more and more reconstruction and expansion projects for existing highways, followed by The phenomenon of overloading and overloading is 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 phenomenon of overloading is very serious. With the increase of traffic volume and the increase of heavy-loaded and overloaded vehicles, the road surface The damage is serious, resulting in the continuous increase of the thickness of the domestic asphalt pavement, the continuous increase of the amount of asphalt, and the continuous increase of the cost of the pavement. With the long-term high level of international oil prices, the domestic asphalt price is higher