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A method for detecting road base damage using acoustic emission technology

An acoustic emission technology, road base technology, applied in the field of road disease detection

Inactive Publication Date: 2019-01-22
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the road base layer is laid under the road surface layer and cannot be directly detected by using acoustic emission technology, and provides a method based on acoustic emission technology to detect damage to the road base layer by using a waveguide rod

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  • A method for detecting road base damage using acoustic emission technology
  • A method for detecting road base damage using acoustic emission technology
  • A method for detecting road base damage using acoustic emission technology

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Such as figure 1 with figure 2 As shown, the whole road composition that the present invention needs to detect comprises road surface layer a, road base layer b and road base layer damage 5; The detection equipment used in the present invention comprises acoustic emission sensor 1, acoustic emission acquisition device 2, drill plug 3 and Waveguide 4. The present invention needs to drill a hole on the lane line of road surface layer a with drilling machine, and general borehole diameter is 100mm and gets final product, and depth of drilling is preferably equal to road surface layer thickness.

[0023] Such as image 3 with Figure 4 As shown, the material of the waveguide 4 adopted in the present invention is low carbon steel, the diameter d is 16mm, the length is equal to the thickness L of the road surface layer a, and its upper end has a tapered boss; the...

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Abstract

The invention discloses a method for detecting damage of a roadbase by means of an acoustic emission technique. A road is composed of a road surface course, a roadbase and damage of the roadbase. A detection device comprises an acoustic emission sensor, an acoustic emission acquiring device, a drilling plug and a waveguide rod. The acoustic emission acquiring device and the acoustic emission sensor are connected through a shielded wire, the acoustic emission sensor is coupled to the surface of a boss of the waveguide rod, the waveguide rod is plugged into an inner hole of the drilling plug, the drilling plug is plugged into a hole in a lane line, and the hole in the lane line is drilled by a drilling machine and only exists in the road surface course. Acoustic emission detection is applied to road detection, so that the defect that the detection difficulty of detecting fine diseases by ground penetrating radar is relatively great is overcome.

Description

technical field [0001] The invention belongs to the field of road disease detection, and in particular relates to a method for detecting road base layer damage by using an acoustic emission technology, which is mainly used in advance forecasting of road diseases and is a non-destructive detection method. Background technique [0002] The semi-rigid base has the advantages of good integrity, high strength, and low cost. Most of the high-grade asphalt pavement roads in my country's high-grade highways use semi-rigid bases. As the road is put into use, the road continues to have diseases that affect normal operation, such as cracks, water content, etc. In order to report road diseases in advance, reduce road maintenance costs, and ensure normal operation of roads, non-destructive testing of roads is particularly important. At present, the non-destructive detection method of road diseases is mainly ground-penetrating radar. Ground-penetrating radar detection is often used to de...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D1/00
CPCE02D1/00E02D2600/10
Inventor 李胜利毋光明石鸿帅
Owner ZHENGZHOU UNIV