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Construction method for treating cracks of semi-rigid base asphalt pavement

A semi-rigid base and asphalt pavement technology, applied in the field of construction engineering, can solve the problems of large traffic interference, long closed traffic time, incomplete treatment, etc., and achieve the goal of improving construction quality, shortening construction period, reducing investment and labor cooperation. Effect

Active Publication Date: 2019-11-15
CHONGQING UNIV IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional methods for dealing with cracks in semi-rigid base asphalt pavement are as follows. One is the excavation maintenance method, which requires excavating the asphalt surface and semi-rigid base, and then re-paving in situ. One is to cover the cracks above the asphalt pavement without treating the cracks, and the overlay is directly above the original asphalt pavement. The third method is to use hot asphalt or self-adhesive tape for surface treatment. The above methods are harmful to traffic. Large interference impact, long construction period, long closed traffic time, incomplete treatment, etc.

Method used

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Embodiment 1

[0030] Conventional methods are mostly excavation-type maintenance, overlaying or pavement regeneration and other technologies, which require interruption of traffic, long construction period, and poor treatment effect. This embodiment provides a construction method for treating cracks in semi-rigid base asphalt pavement, comprising the following steps:

[0031] 1) Clean the cracks on the road surface, and use a high-power blower to clean the cracks and slots.

[0032] 2) Use 3D ground penetrating radar to detect the cracks on the pavement, and analyze the reflective cracks in detail combined with the detection results. Among them, the detection content of the three-dimensional ground penetrating radar is the position of the crack, the size of the crack and the disease condition of the parts below the base. The 3D ground penetrating radar grayscale image can display the transverse and vertical sections of the road surface and the radar images parallel to the road surface at d...

Embodiment 2

[0044] This embodiment provides a basic construction method for treating cracks in semi-rigid base asphalt pavement, including the following steps:

[0045] 1) Clean the cracks on the road surface.

[0046] 2) Use 3D ground penetrating radar to detect the cracks on the pavement, and analyze the reflective cracks in detail combined with the detection results.

[0047] 2.1) According to the design requirements, the three-dimensional ground penetrating radar is used to detect the road conditions within the detection range, and the gray-scale image of the radar parallel to the road surface and the gray-scale image of the horizontal and vertical sections are obtained.

[0048] 2.2) Determine the planar distribution of pavement cracks at different depths in the road structure layer based on the detected grayscale images parallel to the pavement.

[0049] 2.3) Determine the direction, opening and depth information of pavement cracks based on the detected grayscale image parallel to ...

Embodiment 3

[0058] The main steps of this embodiment are the same as in Example 2, wherein, in step 6), the permeable slurry is weighed according to the following raw materials in parts by weight: 100 parts of Portland cement, 25 parts of selected quartz sand, 35 parts of water, alkali 1 part of active agent and 10 parts of adhesive are mixed to obtain a penetrating slurry. The permeable slurry has low viscosity and good permeable type, and can permeate and diffuse well and cement road materials.

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Abstract

The invention provides a construction method for treating cracks of a semi-rigid base asphalt pavement. According to the construction method, firstly a three-dimensional ground penetrating radar is used for accurately detecting the cracks, according to the results of the three-dimensional ground penetrating radar, a special grouting pipe is arranged in a targeted mode, then the surfaces of the cracks are sealed, and finally, permeation grouting is implemented, so that the functions of improving construction process, shortening construction period and reducing construction machinery and personnel input are achieved.

Description

technical field [0001] The invention relates to the technical field of construction engineering, in particular to a construction method for treating cracks in semi-rigid base asphalt pavement. Background technique [0002] At present, my country's high-grade highway construction is in a stage of rapid development. By the end of 2018, the mileage of my country's high-speed kilometers has exceeded 140,000 kilometers. Semi-rigid base asphalt pavement is one of the main road structure types of high-grade highways. It is the most widely used in high-grade roads, accounting for more than 80% of the overall high-grade road surface. The semi-rigid base asphalt pavement used on my country's expressways is usually composed of semi-rigid base subbase and asphalt pavement. Due to the influence of various environmental factors such as structure type, climate, topography, and traffic load, cracks of different degrees and shapes will occur in semi-rigid base and asphalt surface, and these c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/09C04B28/04
CPCC04B28/04E01C23/0973C04B14/06C04B2103/44
Inventor 李松涛许胜捷李潇种海港
Owner CHONGQING UNIV IND TECH RES INST
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