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Method for measuring cohesive force between ice pavement and asphalt pavement

A technology of asphalt pavement and measurement method, which is applied to measurement devices, instruments, and mechanical devices, etc., can solve problems such as inconsistent water film thickness, large pull-off area, and asphalt pavement residues, so as to achieve true measurement results and controllable measurement accuracy. , good sealing effect

Pending Publication Date: 2021-06-08
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the ice-asphalt pavement adhesion measurement method of the prior art, because the water film area cannot be controlled, causes the water film thickness in each test process to be inconsistent; When the interface between the layer and the asphalt pavement is separated, the pull-off area is likely to be larger than the test area or due to the existence of air bubbles inside the ice layer, the ice layer itself will break, leaving a large amount of ice on the asphalt pavement.
[0011] However, the cohesion loss caused by ice layer fracture cannot be deducted. Therefore, the cohesion value between the ice-asphalt pavement detected by the measurement method of the prior art is actually the bond between the real ice layer and the asphalt pavement. force and the cohesive force when the ice layer breaks itself, the resultant force of the two
[0012] That is to say, the measuring method of prior art, its test result is untrue, imprecise

Method used

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  • Method for measuring cohesive force between ice pavement and asphalt pavement
  • Method for measuring cohesive force between ice pavement and asphalt pavement
  • Method for measuring cohesive force between ice pavement and asphalt pavement

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Present embodiment relates to a kind of measurement method of cohesive force between ice-asphalt pavement, such as figure 2 with image 3 Shown: Include the following steps:

[0037] The first step is to use hydrophilic quartz sand cement mortar to make the spindle 1 used in the test, with a molding height of 68mm and a diameter of 101mm, and connect the spindle to the screw rod of the XH-40 concrete strength puller of Beijing Tiandi Xinghuo Technology Development Co., Ltd. 2 Pre-fixed in cement mortar during molding, with a pre-embedded depth of 50mm;

[0038] In the second step, the polyester felt 4 with a circular metal plate 3 with a diameter of 101mm is combined with the spindle through epoxy resin and curing agent. The thickness of the polyester felt is 3mm, and the width around it is 15mm and four 5mm are reserved. The fixing metal ring 5 of the screw hole and the M5 screw 6 of 20mm are fixed on the spindle 1;

[0039] The third step is to determine four circ...

Embodiment 2

[0046] Present embodiment relates to a kind of measurement method of cohesive force between ice-asphalt pavement, such as figure 2 with image 3 Shown: Include the following steps:

[0047] Except that the third step AC-5 is replaced by AC-13 rutting plate, other steps are the same as in embodiment 1. Table 1 compares prior art with test result of the present invention:

[0048] Table 1

[0049]

[0050]

[0051] It can be seen from Table 1 that the measurement results of the prior art are more discrete, and the measurement results of the present invention are more accurate, real and stable. Depend on Figure 4 It can be seen from the figure that the area of ​​the water film in the prior art is inconsistent, resulting in uncontrollable thickness of the ice layer, and more ice remains on the surface of the specimen. These factors will inevitably lead to large errors in measurement results and unstable data. The measurement method of the present invention can ensure...

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Abstract

The invention provides a method for measuring cohesive force between an ice pavement and an asphalt pavement. The area of the test area is fixed by the nail-free glue, so that the thickness of the water film is consistent in each test process; the metal plate and the drawing spindle are bonded together through epoxy resin and a curing agent, the metal plate and the polyester felt are bonded together through super glue of the metal plate, and by means of the water absorption of the polyester felt and the reinforcement effect of fibers on the surface of the polyester felt on ice, when the drawing device exerts pulling force, only interface separation between the ice layer and the asphalt pavement occurs at the interface. The technical problems that the thickness of the water film cannot be controlled, and the measured value of the binding force between the ice layer and the asphalt pavement is actually the resultant force of the real binding force between the ice layer and the asphalt pavement and the cohesive force when the ice layer is broken in the prior art are ingeniously solved. The measurement result is real and accurate, and the method has universality.

Description

technical field [0001] The invention belongs to the field of testing the anti-ice and snow performance of materials, and in particular relates to a method for measuring the cohesive force of ice-asphalt pavement. Background technique [0002] With the development of road ice and snow removal technology, the research on antifreeze sticky road surface and snowmelt road surface is gradually in-depth. In order to better promote this kind of functional pavement materials, the research on corresponding evaluation methods is also very important. Due to the early start of research on this technology in Japan and Europe, the corresponding evaluation methods have formed a relatively mature system. However, in recent years, this type of evaluation method has not been updated. It can’t meet the new materials that are changing with each passing day; most of the evaluation methods proposed in China in recent years are based on large-scale instruments, which have single functions, poor pra...

Claims

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Application Information

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IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 邢明亮王郭勇陈华鑫李祖仲周晓伟吴永畅尹艳平张心攀赵曦
Owner CHANGAN UNIV
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