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A device and method for evaluating factors affecting rutting of asphalt pavement

A technology of asphalt pavement and influencing factors, applied in the field of asphalt pavement rutting, can solve the problems of influence, inability to completely control the error of test results, inability to perform rutting at the same time, etc., and achieve the effect of accurate test results

Active Publication Date: 2021-11-26
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) It is impossible to use one test piece to complete the comparative test of the wrong test conditions, and it is impossible to completely control the error of the test results caused by the different test pieces;
[0005] (2) The influence of rutting on the same asphalt pavement under different test conditions cannot be carried out at the same time;
[0006] (3) The research on the factors affecting the generation and development of asphalt pavement is not thorough enough;
[0007] (4) There is a lack of a set of systematic evaluation indicators to evaluate the influence of different test conditions on the formation and development of rutting on asphalt pavement

Method used

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  • A device and method for evaluating factors affecting rutting of asphalt pavement
  • A device and method for evaluating factors affecting rutting of asphalt pavement
  • A device and method for evaluating factors affecting rutting of asphalt pavement

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0036] Example 1: Exploring the effect of different temperatures on asphalt pavement rutting

[0037] Firstly, the asphalt mixture used in the test was kept at 160°C for two hours to simulate the short-term aging in the production process of asphalt mixture, and then it was shaped by a wheel compactor, and the concavity was set through the control panel 5 and the central controller. The load of the concave wheel 7 is a N, the inflation pressure of the rubber tube is b kpa, the operating frequency of the concave wheel 7 is c Hz, that is, c round trips / minute, and the test time is t.

[0038] Place the formed test piece 6 on the rubber base 18, adjust the position of the isolation plate 14, so that the bottom of the rubber slot 17 is in close contact with the test piece 6 to achieve airtight effect; open the temperature control device 16, through the control panel 5 and the central control Input the required test temperature T 1 , observe the value in the first display panel 4,...

example 2

[0043] Example 2: Exploring the effect of different precipitation on asphalt pavement rutting

[0044] First, the asphalt mixture used in the test was kept at 160°C for two hours to simulate the short-term aging during the production process of asphalt mixture, and then it was shaped by a wheel compactor, and the setting was input through the control panel 5 and the central controller 7 The load of the concave wheel is a N, the inflation pressure of the rubber tube is b kpa, the operating frequency of the concave wheel 7 is c Hz, that is, c round trips / minute, and the test time is t.

[0045] Place the formed test piece 6 on the rubber base 18, adjust the position of the isolation plate 14, so that the bottom of the rubber slot 17 is in close contact with the test piece 6 to achieve the airtight effect; open the water inlet 12, and supply water through the external water source through the rubber water pipe. The control panel 5 and the central controller input and set the prec...

example 3

[0050] Example 3: Exploring the influence of different axes on asphalt pavement rutting

[0051] Firstly, the asphalt mixture used in the test was kept at 160°C for two hours to simulate the short-term aging in the production process of asphalt mixture, and then it was shaped by a wheel compactor, and the concavity was set through the control panel 5 and the central controller. The load of the shaped wheel 7 is a N, the inflation pressure of the rubber tube is b kpa, the operating frequency of the concave wheel 7 is c Hz, that is, c round trips / minute, and the test time of the left part of the test chamber is t 1 and the test time t in the right part of the test chamber 2 .

[0052] Place the formed test piece 6 on the rubber base 18, adjust the position of the isolation plate 14, make the bottom of the rubber slot 17 closely contact with the test piece 6 to achieve the airtight effect; start the test through the control panel 5 and the central controller, and the test box 9 ...

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Abstract

The present invention is a device and method for evaluating factors affecting asphalt pavement rutting. The control box of the device is located at the lower part of the device, and contains a power device and a temperature control device inside. The operation box is located above the control box, and contains a first display panel and a control box inside. The control panel, the central controller and the second display panel, the test piece is located above the operation box and placed on the rubber base; the concave wheel is the pressure device for the test, and the power shaft is the power device that drives the concave wheel to move back and forth; the test box It is used for testing; the method of the present invention adopts a test piece to complete the comparative test of different test conditions, so as to realize the control of the variable produced by the different test pieces so as to obtain accurate test results; it is possible to study the generation and development of various influencing factors on asphalt pavement rutting A complete set of evaluation indicators was established to evaluate the influence of different test conditions on the formation and development of asphalt pavement rutting.

Description

technical field [0001] The invention relates to the field of asphalt pavement rutting, in particular to a device and method for evaluating factors affecting asphalt pavement rutting. Background technique [0002] Asphalt pavement has the advantages of comfortable driving, low noise, fast construction speed, and convenient maintenance, so asphalt pavement is basically used in expressway construction. Statistics show that more than 95% of the highways built in my country use asphalt pavement. While asphalt pavement is being paved in large quantities, the problem of asphalt pavement disease is highlighted. Ruts are one of the main ones. Compared with cracking and water damage, rutting is more harmful and directly endangers traffic safety. At the same time, the maintenance of rutting damage is the most difficult, because rutting not only occurs on the surface, but also often endangers the middle and lower layers. All countries in the world have always put the prevention of r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/00
Inventor 丁建明王虹霁
Owner SOUTHEAST UNIV