Construction technology of in situ thermal regeneration

Abstract

The invention discloses a construction technology of in situ thermal regeneration. The construction technology comprises the following steps that firstly pre-construction preparation is conducted; then pavement heating is conducted; pavement milling is conducted, and a regenerant and new asphalt are sprayed; reclaimed materials are remixed; paving of the reclaimed materials is conducted; rolling of the reclaimed materials is conducted; then a finished-product road section is detected; and finally traffic is opened. According to the construction technology of in situ thermal regeneration, one-time forming of a new pavement can be achieved, the use ratio of original pavement materials can reach to 100%, and waste is recycled and used; resources are saved, environmental pollution is reduced, and traffic is not closed in the operating process; the economic and social benefits are remarkable, marshalling type combined operation is conducted, the technology of heating, drying and stirring and mixing in the whole process ensures the quality of new and old regenerated mixtures, automated line production of pavement construction is achieved, the maintenance effect is good, and the road condition is good after maintenance is conducted.

Description

technical field [0001] The invention relates to the technical field of road maintenance and repair construction, in particular to a construction process of in-situ thermal regeneration. Background technique [0002] Asphalt pavement hot-in-place re-mixing and overlaying construction technology is mainly a maintenance technology for old asphalt pavement. It is re-mixed with materials such as heating in situ, raking, and adding admixtures to restore the original asphalt pavement function. It is a kind of recycling technology, and at the same time of its paving, the overlaying construction technology of a layer of asphalt concrete pavement structure layer is carried out simultaneously. A large number of highways in my country have entered the road maintenance period, and these roads are mostly asphalt roads, and more than 200 million tons of waste will be generated every year. Waste disposal will generate a large amount of industrial waste, and waste discharge will also cause l...

AI Technical Summary

Problems solved by technology

A large number of highways in my country have entered the road maintenance period, and these roads are mostly asphalt roads, and more than 200 million tons of waste will be generated every year. Waste disposal will generate a large amount of industrial waste, and waste discharge will also cause land occupation and pollution. The use of new pavement materials will also generate more energy waste and exhaust emissions

The road is damaged, and re-paving not only wastes resources but also causes re-pollution of the environment. At the same time, it is necessary to mill the original road surface and transport equipment and materials, which consumes a lot of manpower and material resources, greatly increases the cost, and affects the normal use of traffic roads. hamper traffic flow

[0003] The existing heat-in-place regeneration process of asphalt pavement generally does not recycle the asphalt mixture of the old road on site or needs to recycle the asphalt mixture of the old road before construction, and the construction is more troublesome

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