Construction method for in-situ cold regeneration of highway cement stabilized macadam base

Abstract

The invention discloses a construction method for in-situ cold regeneration of a highway cement stabilized macadam base, and belongs to the technical field of highway construction. The method comprises the following steps: S1, marking out a macadam spreading area boundary line by using white lime, loading macadam into a macadam spreading vehicle, and spreading the macadam onto an original road byusing the macadam spreading vehicle; and S2, manually spreading cement on the original road, and carrying out slicking treatment. According to the invention, optimized auxiliary material addition canbe determined through sampling, a better regeneration effect is achieved, excessive or insufficient auxiliary materials are avoided, the use performance and comfort of a road are guaranteed, meanwhile, in the construction process, milled old materials are directly utilized on site, the cost is saved, a construction period is short, and an exploitation amount of new materials is greatly reduced through utilization of the old materials; and the problems of transportation and stacking of old materials do not exist, and the requirement for environmental protection is fundamentally met.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a construction method for in-situ cold regeneration of a road cement-stabilized gravel base. Background technique [0002] Highways refer to public roads that can drive cars between cities, between urban and rural areas, and in rural areas that have been checked and accepted by the competent highway department. [0003] Most of the graded highways that have been built and are under construction in my country are water-stable semi-rigid base asphalt pavements. Semi-rigid base pavement has high strength and bearing capacity, and its late strength is high and has the characteristics of increasing with age, so semi-rigid base pavement has become one of the most important pavement structure types of high-grade highways in my country. With the increase of traffic volume and the increase of service life year by year, the overhaul of highways has become very urgent. How to bett...

AI Technical Summary

Problems solved by technology

[0004] Traditional road maintenance mainly uses milling machines to mill damaged road surfaces and re-pave new road surfaces. On the one hand, this method will prolong the construction period, and on the other hand, it will increase the cost. The old milled materials need to be processed, and it is very easy to stack them. Pollution to the environment, but the factory mixed cold recycling construction technology is adopted. This construction technology is to pull the milled old materials back to the recycling field, screen and remove the unqualified components in the old materials, add new materials and asphalt, Mixing and then transporting to the site again for paving will increase the difficulty of construction and also affect road traffic

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