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Method for evaluating high-temperature performance of hot pouring type crack pouring sealant

A technology of high temperature performance and seam filling glue, applied in the direction of material inspection products, etc., can solve the problem that the high temperature performance of seam filling glue cannot be well reflected, and achieve the effect of easy equipment and test environment, and clear test results.

Active Publication Date: 2016-12-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem that the current high-temperature performance evaluation method of hot-filling joint-filling adhesives cannot well reflect the high-temperature performance of the hot-filling joint-filling joints under real road conditions, and provides a method for evaluating the high-temperature performance of hot-filling joint-filling joints. method

Method used

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  • Method for evaluating high-temperature performance of hot pouring type crack pouring sealant
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  • Method for evaluating high-temperature performance of hot pouring type crack pouring sealant

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine Figure 1-6 , this embodiment is a method for evaluating the high-temperature performance of hot-filling joint-filling glue, which is specifically carried out according to the following steps:

[0025] 1. Pavement basic data survey: investigate and obtain the basic data of the actual asphalt pavement;

[0026] 2. Preparation of rutting slabs: prepare asphalt mixture with the same basic data according to the basic data of the actual asphalt pavement obtained in step 1, then put it into the mold, and prepare a 300mm× 300mm×50mm rectangular rutting plate specimen, and there is a rectangular parallelepiped groove at the center line of one of the surfaces with a size of 300mm×300mm to simulate cracks on the asphalt pavement. The length of the rectangular parallelepiped groove is 300mm, and the width and depth are the same as the actual The width and depth of the slotting and slotting of the asphalt pavement are the same, and the cen...

specific Embodiment approach 2

[0031] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the basic data of the asphalt pavement described in step 1 is the type of asphalt pavement surface layer mixture, the gradation of the asphalt mixture, and the type of aggregate in the mixture and grades of asphalt mixtures. Others are the same as the first embodiment.

specific Embodiment approach 3

[0032] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the mold described in step two is a hollow cuboid without a cover, the depth of the inner hollow is 50mm, and the length and width are 300mm. A bump is set in the middle of the bottom surface, the length of the bump is 300mm, and the width and height of the bump are respectively the same as the width and depth of the actual asphalt pavement groove. Others are the same as the first embodiment.

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Abstract

The invention discloses a method for evaluating the high-temperature performance of hot pouring type crack pouring sealant, and relates to a method for evaluating the performance of hot pouring type crack pouring sealant. The method aims to solve the technical problem that a traditional method for evaluating the high-temperature performance of the hot pouring type crack pouring sealant cannot favorably reflect the high-temperature performance under the real road surface state of the crack pouring sealant. The method comprises the following steps: 1) carrying out road surface basic data investigation; 2) preparing a track plate; 3) carrying out crack pouring; 4) carrying out a track experiment, and comparing a deformation situation. The method has the following beneficial effects that the invention provides an effective new method capable of evaluating the high-temperature performance of the crack pouring sealant. On the basis of the traditional high-temperature performance evaluation of the crack pouring sealant, the track experiment can be used for simulating the practical situation of a scene to further evaluate the wheel sticking and detrainment situation of the crack pouring sealant, and the deficiencies of a traditional experiment are made up; equipment and experiment environment can be easily realized, the method that the track experiment is used for evaluating the high-temperature performance of the crack pouring sealant reasonably utilizes the traditional equipment of a laboratory, and new equipment does not need to be additionally developed. Two evaluation indexes of the high-temperature performance of the crack pouring sealant are provided, and an experiment result is clear, wherein the two evaluation indexes are independently the deformation length L and the deformation area S of the crack pouring sealant. The method is applied to the traffic field.

Description

technical field [0001] The invention relates to a method for evaluating the high-temperature performance of hot-filling joint-filling glue. Background technique [0002] Cracks are a relatively common pavement disease. At present, the method to deal with pavement cracks is usually to fill the cracks. As a common filling material, hot-filling joint-filling adhesives are widely used by maintenance departments. Hot pouring joint glue (hereinafter referred to as joint glue) is made of modified asphalt polymer material, and a good joint glue material should have good high temperature performance. The high-temperature stability of the joint glue means that it is stable, does not flow, and does not stick to the wheel under high temperature conditions. It is mainly manifested that it will not be taken out by the wheel under the repeated action of the wheel load. Although caulking glue is widely used, the test method for evaluating the high temperature performance of caulking glue n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/42
CPCG01N33/42
Inventor 曹丽萍刘胜强刘忠骥
Owner HARBIN INST OF TECH
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