Road surface construction and quality control method for quickly opening traffic in heavy traffic low-temperature environment

Abstract

A pavement construction and quality control method for quickly opening traffic in a heavy traffic low-temperature environment comprises the steps that firstly, the raw material ratio of a cold recycled mixture for a pavement is determined, raw materials comprise a first group of materials and a second group of materials, wherein the first group of materials comprise new aggregate, cement and asphalt mixture recycled materials, and the second group of materials comprises foamed asphalt and mixing water; and pavement cleaning, new aggregate spreading, cement spreading, regeneration operation, paving, compaction, joint jointing, maintenance and traffic opening are performed. The construction and quality control method for the specific foamed asphalt in-situ cold recycled material has the advantages that the separation of the mixture can be effectively avoided, the traffic can be quickly opened, and finally, the traffic can be quickly opened in the heavy traffic low-temperature environment of the lower surface layer of the high-quality asphalt pavement.

Description

technical field [0001] The application relates to the field of asphalt mixture technology, in particular to a road surface construction and quality control method for rapid opening of traffic (2 hours) in a heavy-traffic low-temperature environment (the lowest temperature can be realized at 10°C). Background technique [0002] According to the current situation of road construction in my country and according to the design life of asphalt pavement, a considerable proportion of asphalt pavement in my country has entered the period of large and medium maintenance. Traditional maintenance methods have problems such as unreasonable use of old materials, high consumption of pavement materials and energy, etc. , there is an urgent need for a more economical and applicable pavement regeneration technology that can not only maintain the normal operation of the road, but also reasonably dispose of waste pavement materials. Foamed asphalt cold recycling technology has emerged as the tim...

AI Technical Summary

Problems solved by technology

Its limitations are mainly reflected in: (1) The research on foamed asphalt cold recycled mixture is not deep enough, for example, the gradation range of the mixture is too wide, and the quality of the finished material cannot be effectively controlled; the performance evaluation index of the mixture cannot adapt to the specific (2) Based on the tire-type in-situ cold recycling machine, after milling and mixing, it is directly paved on the road, which inevitably produces segregation of the recycled mixture gradation; at the same time, the process requires a grader for leveling , the surface of the regeneration layer is prone to segregation, and the surface flatness is also difficult to control; (3) The width of regeneration at one time can only reach 2.4m, and the regeneration construction of a lane of 3.75m cannot be completed, resulting in more longitudinal and transverse joints. At the same time, the construction efficiency is low, and it is difficult to meet the construction requirements of large traffic roads

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