Temperature-adjusted and modified recycled ascon composition for reusing 100% of waste ascon for road pavement, and method for manufacturing same

Abstract

Provided is a temperature-adjusted and modified recycled ASCON composition for reusing 100% of waste ASCON for road pavement, and a method for manufacturing same, wherein the composition is used in asphalt pavement as a material for the wearing course, surface course, binder course, and base course, and the method comprises: feeding 100 wt % of waste ASCON aggregate having up to a 53 mm particle size distribution into a mixer via a feeding inlet for new aggregate; adding 0.1 to 20 wt % of a recycling modifier and 0.1 to 20 wt % of a temperature-adjusting additive to the waste ASCON via the feeding via the inlet for new aggregate; and homogeneously mixing said materials at 5 to 180 DEG C for 0.5 to 3 minutes. The recycling modifier improves the physical properties of recycled ASCON, while the temperature-adjusting additive adjusts the temperatures for producing and constructing recycled ASCON. The present invention may provide economic, social and technological conveniences by improving the overall recycling technology of waste ASCON. The conveniences may be achieved by virtue of: cost-saving in production by using only waste ASCON without any new materials; saving waste disposal costs; preventing the destruction of nature to obtain aggregate; reducing the consumption of new asphalt; preventing environmental pollution through the reuse of waste products; preventing the early occurrence of plastic deformation and fatigue cracks due to improving the quality of the recycling modifier; economic benefits from the prolonged lifespan of road pavement; the possibility of being used as a material for the wearing course and surface course of major roadways; saving energy in the production and construction of recycled ASCON by adding the temperature-adjusting additive; and reducing greenhouse gas emissions.

Description

technical field [0001] Generally speaking, asphalt concrete is made by heating and mixing asphalt binder, coarse aggregate, fine aggregate and filler at high temperature (160-180°C), and is widely used in the pavement construction of various roads, airport runways and parking lots . During the use of this kind of asphalt pavement, the asphalt binder on the pavement surface slowly reacts with the oxygen in the air, gradually loses its original softness and gradually hardens. This phenomenon is called oxidative aging of asphalt pavement. With the increase of the service time of the pavement, the oxidative aging proceeds for a long time, severe cracks occur on the pavement surface, and finally, the pavement life ends. [0002] When the asphalt pavement has serious problems in use (plastic deformation or fatigue cracks, etc.), when the pavement is maintained and repaired, or when the asphalt pavement of the road is expanded, or excavated for the purpose of burying sewer pipes, wi...

AI Technical Summary

Problems solved by technology

However, the above-mentioned invention also has a series of problems, the problem of material supply when the waste asphalt concrete is insufficient, the solution to the high temperature of production, that is, the problem of oxygen aging caused by high temperature heating, the problem of occurrence of greenhouse gas and waste of energy, etc.

Images