Construction method for disposing road cracks by using waterborne polyurethane

A water-based polyurethane and construction method technology, applied in roads, roads, road repair and other directions, can solve problems such as unseen use in the field of road repair, and achieve the effects of solving road cracks and diseases, short gel time, and enhancing bearing strength

Pending Publication Date: 2021-04-06
ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no use has been seen in the field of road rehabilitation

Method used

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  • Construction method for disposing road cracks by using waterborne polyurethane
  • Construction method for disposing road cracks by using waterborne polyurethane
  • Construction method for disposing road cracks by using waterborne polyurethane

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0024] A construction method for treating road cracks with water-based polyurethane, the steps are:

[0025] Step 1, such as figure 1 , using a three-dimensional ground-penetrating radar to carry out non-destructive testing on the road 1, the pavement structure layer of the road 1 is an asphalt pavement surface layer, a cement stabilized gravel layer and a subgrade notoginseng ash layer from top to bottom. Analyze the characteristics of the radar spectrum of different pavement structural layers, start from the top surface of the pavement at the crack 2, analyze the shape, direction, buried depth and other characteristics of the crack 2, and draw a crack distribution map.

[0026] Step 2. Divide the construction operation area according to the crack distribution map, and cut and slot the cracks 2 with a width less than 3 mm along the development direction of ...

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Abstract

The invention discloses a construction method for disposing road cracks by using waterborne polyurethane. The method comprises the following steps: carrying out nondestructive testing on road cracks, drawing a crack distribution diagram, cutting and slotting cracks with the width of less than 3mm as required, drilling grouting holes at intervals along the trend of the cracks, installing grouting pipes, injecting water into the cracks; and then injecting a waterborne polyurethane grouting material, enabling the slurry to react with water in the cracks to generate gel to fill the cracks, sealing the grouting holes after grouting is completed, and finally performing rechecking to confirm that repairing is completed. The method has the advantages that visual detection of road cracks can be achieved, follow-up grouting repair is effectively guided, the characteristics that the waterborne polyurethane material is high in water reaction speed and short in gelation time are ingeniously utilized, roadbed and pavement cracks can be rapidly and comprehensively repaired, the material cannot generate a corrosion effect. And the road crack disease is effectively solved, and wide applicability is achieved.

Description

technical field [0001] The invention belongs to the technical field of road maintenance, and in particular relates to a construction method for treating road cracks with water-based polyurethane. Background technique [0002] At present, asphalt concrete pavement and cement concrete pavement are the main pavement forms in our country. However, with the increase of vehicle load, the damage to the road surface caused by overweight vehicles is increasing, and the roads built in the early stage have entered the maintenance stage ahead of schedule. Among many pavement diseases, pavement cracks are the most common and the most difficult to eradicate. After the pavement cracks, harmful impurities on the road surface will soak into the subgrade or base layer with the influence of water and vehicle driving, resulting in diseases such as mud pumping and hollowing out of the bottom of the slab, which will affect the driving comfort of the road surface. The generation of pavement crac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C23/09E01C23/01
CPCE01C23/01E01C23/0973
Inventor 李松涛郭运宏王晓靖唐华瑞闫然常驰赵亮
Owner ZHENGZHOU RAILWAY VOCATIONAL & TECH COLLEGE
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