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Method for testing and evaluating properties of bonding layer of asphalt pavement

A kind of asphalt pavement and evaluation method technology, which is applied in the direction of measuring devices, instruments, and mechanical devices, etc., can solve the problem that there is no effective test method for the interlayer adhesion of drainage asphalt pavement surface layers

Inactive Publication Date: 2018-03-20
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no effective test method for how to evaluate the interlayer adhesion of drainage asphalt pavement.

Method used

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  • Method for testing and evaluating properties of bonding layer of asphalt pavement
  • Method for testing and evaluating properties of bonding layer of asphalt pavement
  • Method for testing and evaluating properties of bonding layer of asphalt pavement

Examples

Experimental program
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Embodiment 1

[0039] This embodiment is based on the 2015 Ningjing Salt Drainage Asphalt Pavement Interlayer Bonding Material Selection Project in Jiangsu Province, and the present invention is applied to detect the rubber asphalt synchronous crushed stone seal layer bonding layer material combined with a variety of different materials, and a preferred one is selected. A combination of one or more effective drainage asphalt pavement adhesive course materials.

[0040] Table 1 Structural composition of drainage asphalt pavement

[0041]

[0042] 40mmPAC means 40mm thick, porous asphalt mixture (Porous Asphalt Concrete). AC-20 means asphalt mixture, in which the nominal maximum particle size of the aggregate is 19.0mm. I indicates the type of compound.

[0043] This implementation case is a test and evaluation of rubber asphalt synchronous crushed stone seal layer bonding layer materials combined with various materials in the test section of the road maintenance in Huaiyin District, Jian...

Embodiment 2

[0059] Based on the drainage type asphalt concrete overlay project of Ningsu-Xu Expressway in 2016, the cohesion between the core samples of the new pavement was analyzed and verified.

[0060] In this embodiment, a set of core samples includes core samples taken from three locations, namely, the right wheelmark of the driving lane, the right wheelmark of the overtaking lane, and the right wheelmark of the emergency lane. Other steps are with embodiment 1.

[0061] Table 3 Structural composition of Ningsuxu drainage pavement

[0062]

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Abstract

The invention discloses a method for testing and evaluating properties of a bonding layer of an asphalt pavement. The method comprises the following steps: drilling an asphalt pavement so as to obtaincore samples, cutting the core samples, retaining cut parts of asphalt surface layers, bonding layers and lower surface layers which are 2-10cm thick, performing pull-out tests on one group of test parts by using a universal testing machine, performing shearing testing on another group of test parts, analyzing data, comparing and analyzing tension testing results and shearing results, and evaluating interlayer bonding strength of the core samples. By adopting the method disclosed by the invention, a common material mechanical testing instrument is used, pavement core samples of which the diameters are 100mm are adopted as test parts, indoor operation can be implemented conveniently, the method is an indoor testing method which is high in feasibility, and valuable instructions to selectionand on-site construction of interlayer bonding materials of water drainage asphalt pavements are provided.

Description

technical field [0001] The invention belongs to the technical field of highway engineering, in particular to a method for testing the performance of asphalt pavement. Background technique [0002] The disease of asphalt pavement, especially the early disease, shows that the test of the bond performance between asphalt pavement layers is extremely important. If the adhesive force is insufficient, the pavement is prone to common diseases such as cracks, wrapping, rutting, chipping, and falling off. The theoretical research and practical research on the interlayer cohesion in our country are not perfect, resulting in the premature failure of a large number of pavements due to improper material selection and design of the adhesive waterproof layer. [0003] Asphalt pavement usually consists of a permeable course, an adhesive course and a seal course. The permeable layer is a thin layer formed by pouring emulsified asphalt, coal tar pitch or liquid asphalt on the base layer to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N19/04
Inventor 曹东伟范勇军平树江李明亮尘福涛
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
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