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Asphalt pavement paving method achieving quick construction and forming

A technology for asphalt pavement and asphalt surface layer, which is applied to roads, roads, and on-site coagulation pavement, etc., can solve the problems of large long-term performance impact of pavement, inability to achieve continuous construction, and increase construction costs, and achieve good long-term performance. The effect of using performance, saving waiting time and saving construction costs

Inactive Publication Date: 2014-04-23
山东省交通科学研究所
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AI Technical Summary

Problems solved by technology

However, adding early-strength agents can shorten the curing time, which cannot achieve continuous construction in the true sense, and increases construction costs. The side effect is that the early-strength agents can easily cause cracks in the base layer, which has a great impact on the long-term performance of the pavement.

Method used

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  • Asphalt pavement paving method achieving quick construction and forming

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Embodiment

[0029] A section of 4-lane 500-meter-long urban arterial road reconstruction project, due to the heavy traffic pressure of closed construction, the traffic management department requires that after the completion of underground pipelines and roadbed construction, the road surface construction and opening to traffic should be completed as quickly as possible.

[0030] The material type and thickness of subbase, lower base and upper base are determined by the method of the present invention, and the thickness and number of layers of asphalt are determined by known methods.

[0031] The pavement structure combination used is: 4cm asphalt mixture surface layer + 6cm asphalt mixture middle surface layer + 8cm asphalt mixture lower layer + 2×18cm lime fly ash macadam base (upper base + lower base) + 18cm lime powder Coal ash gravel subbase + soil foundation.

[0032] Through roadbed construction, the compacted roadbed modulus is greater than 80Mpa. The original subgrade soil is sof...

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Abstract

The invention discloses an asphalt pavement paving method achieving quick construction and forming, belonging to the field of road engineering. The method is characterized by paving a subbase, a lower base course and an upper base course made from lime-flyash macadam mixtures and a surface course made from asphalt mixtures on an earth base in sequence, carrying out gradation design on the lime-flyash macadam mixtures into a dense skeleton type structure, and forming the pavement once by adopting a continuous layered paving and compaction process during construction. Compared with the prior art, the paving method has the beneficial effects that the technical problem of quick construction and forming of the asphalt pavement is solved; the construction time and cost are effectively saved; the traffic pressure is eased; the aims of quick construction of the pavement, saving, durability and environment friendliness are achieved; therefore, the method has good popularization and application values.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a pavement method for rapidly constructed asphalt pavement. Background technique [0002] The technical specification for asphalt pavement construction requires semi-rigid materials (cement-stabilized macadam or lime-fly ash stabilized macadam) to be constructed, after rolling and forming, there must be a certain period of curing process, and then a layer of structural layer is paved. Usually, after the construction and rolling of each layer of semi-rigid material layer is completed, a 7-14 day health preservation process is required before the construction of the previous layer can be carried out. The requirements for health maintenance stem from two considerations. One is continuous construction without health maintenance, and construction machinery may cause damage to the base layer that is forming strength, especially the loose damage to the surface of the base layer; The str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/32E01C7/30C04B26/26C04B18/08
CPCY02W30/91
Inventor 韦金城付建村程钰马士杰余四新胡宗文董昭孙强胡家波
Owner 山东省交通科学研究所
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