Overlapping construction method and overlapping structure of new asphalt pavement and old asphalt pavement

A technology of asphalt pavement and construction method, applied in the directions of roads, roads, pavement details, etc., can solve the problems of low compaction at lap joints, compactness of lap joints, water damage, etc., and achieves separation of rain, snow and water The effect of infiltration path, prolonging service life and reducing the occurrence of early disease

Inactive Publication Date: 2017-09-19
江苏旭辰交通科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In most cases, the widening of expressways requires lapping of new and old asphalt pavements. Since the lap joints of new and old pavement

Method used

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  • Overlapping construction method and overlapping structure of new asphalt pavement and old asphalt pavement
  • Overlapping construction method and overlapping structure of new asphalt pavement and old asphalt pavement
  • Overlapping construction method and overlapping structure of new asphalt pavement and old asphalt pavement

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] In road widening, if the lapping of new and old asphalt pavement is not handled properly, it is easy to cause early pavement diseases in this part. Therefore, it is necessary to carry out watertight and anti-crack treatment on the overlapping joints.

[0068] figure 1 It is a schematic flow sheet of the new and old asphalt pavement lap construction method provided by Embodiment 1 of the present invention, as figure 1 As shown, a kind of new and old asphalt pavement overlapping construction method provided by the present embodiment comprises the following steps:

[0069] S101: Milling the overlapping edge of the old road surface and the new road surface into a stepped structure and cleaning the milled surface;

[0070] Specifically, both the old road surface and the new road surface are asphalt concrete road surfaces.

[0071] Specifically, before the milling of the overlapping edge of the old road surface and the new road surface into a stepped structure, it also inc...

Embodiment 2

[0098] Whether the preparation of the construction personnel is sufficient or not has a great influence on the quality of the construction. Before the construction, the construction technicians should do the following preparations:

[0099] One is the measurement of the existing road surface elevation, which specifically includes: the measurement position of the existing road surface elevation should be selected at a certain distance inward from the inner edge of the old road with the marking line, and measured once at a certain distance, and then according to the measurement results, Adjust the construction elevation and clearly mark it on the drawings, and construct in strict accordance with the drawings.

[0100] Second, the key to constructing the pavement is the elevation of the longitudinal section, specifically including: first, measure the elevation of the old road, and adjust the elevation of the new pavement according to the measurement results. Adjusting the elevati...

Embodiment 3

[0134] The present invention also provides a new and old asphalt pavement overlapping structure, including old pavement 5, new pavement 6, modified hot asphalt, polyester fiberglass cloth and anti-cracking paste, specifically, the old pavement and the new pavement All are asphalt-infiltrated pavements.

[0135] Figure 4 It is the joint schematic diagram of the old and new asphalt pavement provided by Embodiment 3 of the present invention, as Figure 4 As shown, the old pavement 5 includes an old pavement base 51 and an old pavement surface 52, and the edge of the old pavement 5 is provided with a stepped first lap surface; the new pavement 6 includes a new pavement base 61 and New road surface layer 62, the edge portion of described new road surface 6 is provided with the second overlapping surface that matches with described first overlapping surface; The seam of described first overlapping surface and described second overlapping surface It is stepped. Specifically, the ...

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PUM

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Abstract

The invention relates to the technical field of road traffic engineering construction, in particular to an overlapping construction method of a new asphalt pavement and an old asphalt pavement. The method comprises the following steps that the edges of overlapping of the new pavement and the old pavement are milled to be of a step-shaped structure, and the milling surface is cleaned; after a base layer of the new pavement is laid, modified hot asphalt is sprayed on the milling surface; a polyester fiberglass cloth is laid on the upper portion of a joint of the top surface of an old pavement base layer and the top surface of the old pavement base layer; and after a surface layer of the new pavement is laid, crack-resistant paste is laid on the upper portion of a joint of a surface layer of the old pavement and the surface layer of the old pavement. Meanwhile, the invention further discloses an overlapping structure of the new asphalt pavement and the old asphalt pavement. Operation is easy, occurrence of early-stage diseases on the asphalt pavements in the operation stage can be effectively reduced, the service lives of the pavements are prolonged, and saving of the curing cost is facilitated.

Description

technical field [0001] The invention relates to the technical field of road traffic engineering construction, in particular to a new and old asphalt pavement overlapping construction method and an overlapping structure. Background technique [0002] With the development of social economy, the traffic volume of expressways is increasing day by day, and the traffic volume of some expressways has reached saturation, and the congestion phenomenon is serious. In order to solve this phenomenon, widening expressways is an economical and effective way. In most cases, the widening of expressways requires lapping of new and old asphalt pavements. Since the lap joints of new and old pavements cannot be compacted as when hot mixtures are formed, the compactness of the lap joints is low and water seepage is serious. It is easy to form water damage later. Therefore, how to ensure the embedding effect of the old and new asphalt pavement, and improve the degree of compaction and water seep...

Claims

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Application Information

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IPC IPC(8): E01C11/02
CPCE01C11/02
Inventor 沈强儒曹慧
Owner 江苏旭辰交通科技发展有限公司
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