Asphalt concrete prefabricated part based on solid waste material and preparation method of asphalt concrete prefabricated part

Abstract

The invention belongs to the field of recycling of renewable resources (road engineering), and particularly relates to an asphalt concrete prefabricated part based on a solid waste material and a preparation method of the asphalt concrete prefabricated part. According to the invention, after the waste pavement reclaimed material and the waste plastic powder are mixed according to a certain proportion, microwave heating is carried out to prepare the asphalt concrete prefabricated part, so that 100% utilization of the pavement milling material is realized, the waste fine material with high asphalt content is fully utilized, the use amount of new asphalt is saved, and the production cost is greatly reduced; the microwave heating mode is adopted, compared with the traditional heating mode, the microwave heating mode has the advantages that the heating speed of the mixture is high, the secondary aging of the new and old asphalt is reduced, the softening and melting effects of the heated waste plastic powder can be improved, the heating uniformity is good, and the curing effect is prevented from being influenced by non-uniform heating of the waste materials. The emulsified asphalt slurry seal mixture is used for carrying out surface treatment on the prefabricated part, so that the water resistance and corrosion resistance of the prefabricated part can be improved, and meanwhile, the mechanical property of the prefabricated part is also improved.

Description

technical field [0001] The invention belongs to the field of recycling of renewable resources (road engineering), and in particular relates to an asphalt concrete prefabricated component based on solid waste materials and a preparation method thereof. Background technique [0002] The transportation industry is the pioneer of the development of the national economy. As an important part of the transportation industry, highways have developed rapidly in recent years. As of April 2021, my country has built the world's largest expressway network, with a total expressway mileage of 160,000 kilometers, ranking first in the world. Asphalt pavement is the most widely used in the construction of expressways in our country because of its advantages of smooth surface, good comfort, strong durability and convenient maintenance. Due to the long-term use of the expressways built in the early days, a large number of ruts, cracks and other diseases have occurred on some asphalt pavements,...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low utilization rate of road milling materials and basically coarse aggregate in the above-mentioned prior art, the present invention provides a solid waste material-based asphalt concrete prefabricated component and its preparation method. The present invention realizes RAP 100% utilization of materials, making full use of recycled fine materials with relatively high asphalt content, eliminating the addition of new asphalt in the preparation process, greatly reducing costs; adding waste plastic powder and adopting microwave heating, on the one hand, can fully Using the curing effect of thermoplastic materials to improve the strength of prefabricated components, on the other hand, a large number of waste plastics can be used to reduce white pollution

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