Asphalt warm-mixing agent

Abstract

Provided is asphalt warm-mixing agent. The invention relates to the technical field of engineering construction, in particular to asphalt material additive which is widely used in a highway and a bridge. The asphalt warm agent is achieved through the technical scheme which includes wet-mixing adding and dry-mixing adding. The wet-mixing adding includes the steps of heating asphalt to 130-160 celsius degrees, adding and stirring 0.1%-5% (asphalt percentage by weight) polyethylene-polypropylene copolymer for 1-2 hours, namely processing into warm-mixing asphalt, and achieving workability of low-temperature mixing and stirring, low-temperature paving and grinding under low temperature (about 160 celsius degrees) of the warm-mixing asphalt and aggregate. The dry-mixing adding includes that in the process of the mixing and stirring of the asphalt, 0.01%-1% (mixture percentage by weight) polyethylene-polypropylene copolymer is directly added, heating temperature decreases 20-30 celsius degrees compared with ordinary asphalt, mixing and stirring are conducted in normal time, and accordingly the workability of the low-temperature mixing and stirring and the low-temperature paving and grinding are achieved. The technology of the warm-mixing asphalt and the mixture is applied successfully so as to achieve saving of resource costs in highway construction, and reduce pollution on the environment. The technology of the warm-mixing asphalt and the mixture is the emerging technology with great prospect in the field of asphalt pavement materials.

Description

technical field [0001] The invention relates to the technical field of engineering construction, in particular to a road asphalt material additive that can be widely used in roads and bridges. Background technique [0002] Since human civilization began to exist, roads have extended infinitely under people's feet. From the rough trails stepped on by people to the sidewalks paved with cobblestones, from the concrete poured on the cement pavement to the asphalt pavement widely used today, it proves the development history of human civilization from one side. [0003] We know that the asphalt pavement that is widely used today has the advantages of good wear resistance, no dust, and good braking performance of motor vehicles. However, it also has the disadvantages of low melting point and poor low temperature performance. That is to say, in the hot summer, under the scorching of high temperature, the black road surface absorbs heat and softens. Under the rolling of motor veh...

AI Technical Summary

Problems solved by technology

However, low-melting organic solvents also damage the low-temperature properties of asphalt while changing the temperature-viscosity curve