Cold-recycling asphalt mixture

Abstract

The invention discloses a cold-recycling asphalt mixture, which is composed of the following ingredients (by weight): 75-95 parts of a waste asphalt mixture, 1-5 parts of gutter oil, 2-4 parts of diesel oil, 0.3-0.6 part of slaked lime, 0.5-1 part of lignin fiber, 2-3 parts of aluminium chloride, 3-5 parts of fly ash, 0.5-1 part of benzophenone, 0.2-0.3 part of p-toluenesulfonic acid and 0.3-0.6 part of aniline. By the use of a formula-improved cold-recycling mixture, a cold-recycling mixture having improved performance is obtained. A pavement milling material of the in-place cold-recycling mixture has high recycling rate and good construction performance. High-temperature stability and water stability of the in-place cold-recycling pavement are obviously enhanced. The technological flow is simplified. There is no need to consume fuel, and no exhaust gas is discharged. Thus, real cold-recycling of asphalt is realized, and mixture is beneficial to ''energy conservation and emission reduction'' and environmental protection.

Description

technical field [0001] The invention belongs to the field of road engineering materials, and in particular relates to a cold recycled asphalt mixture. Background technique [0002] With the rapid development of highway construction in my country, the total mileage of asphalt roads has increased year by year. At the same time, many asphalt roads built in the early stage have gradually entered the maintenance stage. The speed of construction and maintenance of asphalt roads has been basically the same. Traditional asphalt pavement maintenance adopts the method of excavating the surface layer and the base layer and then paving. Not only the cost of reconstruction is high and the construction period is long, but also the remaining value of the milled asphalt pavement materials cannot be fully utilized. [0003] Asphalt pavement regeneration technology enables the reuse of old asphalt pavement materials, reduces the use of new mineral materials, saves resources and energy, and i...

AI Technical Summary

Problems solved by technology

[0005] The existing technology cannot recycle the asphalt in the recycled asphalt pavement material (ie waste asphalt mixture) at room temperature, and the utilization of the asphalt in the recycled asphalt pavement material can only use the "hot melt" method

However, during the high-temperature heating process, a large amount of fuel is consumed, and the asphalt components in the mixture are further aged, which affects the technical performance of asphalt