Bituminous mixture circuit wheel tracking test device and test method

A technology of asphalt mixture and rutting test, which is applied in the directions of measuring devices, analyzing materials, and using stable tension/compression to test the strength of materials, etc. The rutting test time is short and other problems, so that the rutting test results are true and reliable, the efficiency is improved, and the operation is convenient.

Active Publication Date: 2016-09-21
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current methods used to test the rutting test of asphalt mixture mainly have many shortcomings. The conventional rutting test time is generally too short, the thickness of the rutting specimen is too thin, and the size is too small, which cannot simulate the actual stress state of the road well. There are certain limitations in evaluating the permanent deformation performance of asphalt mixture

Method used

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  • Bituminous mixture circuit wheel tracking test device and test method
  • Bituminous mixture circuit wheel tracking test device and test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Depend on figure 1 It can be seen that the asphalt mixture ring road rutting test device of the present embodiment is composed of a working platform 1, a power assembly 2, a temperature control box 3, a placement platform 4, a ring test mold 5, a lifting bracket 6, a pressure sensor 7, a displacement sensor 8, The load fixing rod 9, the wheel load 10, the transmission shaft 11, the acceleration wheel group 12, the controller 14 and the annular guide rail 13 are composed in combination.

[0036]The working platform 1 of the present embodiment provides an installation environment for the whole device, and the power assembly 2 is installed inside the working platform 1, and the controller 14 for controlling each sensor to collect data and the work of the power assembly 2 is installed on the working platform 1, The power assembly 2 includes a lifting motor, a rotating motor and a chain transmission mechanism installed at the power output end of the lifting motor. The power ...

Embodiment 2

[0049] The asphalt mixture ring road rutting test device of this embodiment is the same as that of Embodiment 1, wherein the annular test mold 5 is a single-layer unit test mold, which is used to realize the molding of a single-layer test piece.

[0050] Use the asphalt mixture loop rutting test device to form the rutting test piece first, and then use the device to realize the asphalt mixture loop rutting test method, as follows:

[0051] The method for forming a rutting specimen consists of the following steps:

[0052] (1) Install the roller on the load fixing rod 9 and set the rolling pressure of the roller, open the temperature control box 3, set the rolling forming temperature of the test piece according to the type and performance of the asphalt, and preheat the roller;

[0053] (2) After the temperature control box 3 is preheated to the set rolling temperature, mix the mixture and spread it evenly in the ring test mold 5. After the paving is completed, adjust the heigh...

Embodiment 3

[0061] The rutting test device of the asphalt mixture ring road in this embodiment is the same as that in Embodiment 1, and the annular test mold 5 is composed of four layers of unit test molds laminated, which can realize the forming of the multi-layer composite structure test piece.

[0062] Use the asphalt mixture loop rutting test device to form the rutting test piece first, and then use the device to realize the asphalt mixture loop rutting test method, as follows:

[0063] The method for forming a rutting specimen consists of the following steps:

[0064] (1) Install the roller on the load fixing rod 9 and set the rolling pressure of the roller, open the temperature control box 3, set the rolling forming temperature of the test piece according to the type and performance of the asphalt, and preheat the roller;

[0065] (2) After the temperature control box 3 is preheated to the set rolling temperature, mix the mixture, spread it evenly in the ring test mold 5 in sections...

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Abstract

The invention relates to a bituminous mixture circuit wheel tracking test device and test method. The device comprises a working platform and a temperature control box, and a power assembly and a controller are disposed on the working platform. The controller is connected with a computer, and a circular rail is disposed on the bottom of the temperature control box. A placing platform connected with the power assembly by a transmission shaft is disposed in the temperature control box, and the placing platform runs at low speed driven by the power assembly with the transmission shaft. An acceleration wheel group is installed on the bottom of the placing platform, and a circular testing mold is disposed on the top of the placing platform. A lifting support is disposed on the top of the circular testing mold, and a pressure head or a wheel load is connected with the middle part of a beam of the lifting support by a load fixed link. The device and the method can realize the moulding of the test pieces with different structure types and function integration of the moulding and the wheel tracking test, and the test pieces drive the wheel to rotate by performing circling motion in single direction, so that the circuit in single direction formed in the test pieces by the wheel is guaranteed which accords with the actual stressing state in road driving, and the wheel tracking test result is real and reliable.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixture performance research, in particular to an asphalt mixture ring road rutting test device and a test method. Background technique [0002] With the rapid development of expressways in my country, more and more attention has been paid to the performance of asphalt pavement. Rutting not only reduces the service life of the pavement, but also seriously affects the driving safety. Rutting has become the main disease of asphalt pavement. The permanent deformation of asphalt mixture at high temperature, the rutting test is a simple and easy method to evaluate the high temperature deformation of asphalt mixture. [0003] The rutting test method was originally developed by TRRL in the UK. Because the test method itself is relatively simple, the test results are intuitive and have a good correlation with the rutting of the actual asphalt pavement, so it has been widely used. The rutting test is an en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/16
CPCG01N3/16G01N2203/0075G01N2203/0222
Inventor 张久鹏朱存贞谭好奇刘卧龙屈甜裴建中胡壮
Owner CHANGAN UNIV
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