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Rutting plate forming device with shear resistance testing function

A technology for testing function and molding device, which is applied in the direction of measuring device, preparation of test samples, and testing material strength by applying stable shear force, which can solve the problem of inconvenient demoulding, unrealistic temperature of rutted plate specimens, and complicated molding. and other problems, to achieve the effect of simple demoulding, avoiding damage, and reducing experimental errors

Pending Publication Date: 2020-02-07
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantages of complicated molding of asphalt mixture rutting slab specimens in the prior art, inconvenient demoulding, and unrealistic temperature of the rutting slab specimens during the shear test, and to provide a method for testing shear performance. Functional rut plate forming device

Method used

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  • Rutting plate forming device with shear resistance testing function
  • Rutting plate forming device with shear resistance testing function
  • Rutting plate forming device with shear resistance testing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Example 1: Single-layer rut plate forming and non-destructive demoulding

[0075] According to the test regulations of "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTGE20-2011), rut plates with different thicknesses were formed. Before use, preheat the rolling wheel 1-3 and the trial mold, and complete the steps 1 to 5 of the "forming and demoulding of single-layer rutting slabs" according to the above-mentioned "rutting slab forming" process, and in step 3 Set the rolling parameters as follows: total load 9kN, rolling twice in the same direction, so far the single-layer rutting slab is formed; after the specimen is cooled for 12 hours, complete step 6 of "single-layer rutting slab forming and demoulding" to the single-layer The demoulding of the rut plate is completed.

Embodiment 2

[0076] Example 2: Double-layer rutting plate forming and non-destructive demoulding

[0077] According to the test regulations of "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTGE20-2011), rut plates with different thicknesses were formed. Before use, preheat the rolling wheel 1-3 and the test mold, and complete the steps 1 to 7 of the "double-layer rutting plate forming and demoulding" according to the above-mentioned "rutting plate forming" process, and set in step 3 Rolling parameters are: total load 9kN, rolling twice in the same direction, so far the double-layer rutting slab is formed; after the specimen is cooled for 12 hours, complete step 8 of "forming and demoulding of the double-layer rutting slab", and the double-layer rutting slab is now formed. The demoulding of the rut plate is completed.

Embodiment 3

[0078] Embodiment 3: Asphalt mixture shear performance test

[0079] According to the test procedure of "Technical Specifications for Construction of Highway Asphalt Pavement" (JTGF40-2004), according to the above-mentioned "asphalt mixture shear performance test" process, the shear performance of asphalt mixture is tested, and the maximum shear when the specimen is damaged is recorded. stress.

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Abstract

The invention belongs to the field of road engineering and discloses a rutting plate forming device with a shear resistance testing function. The device comprises a rolling and loading component, a forming and heating component, a supporting and demolding component, a movable driving component, a driving supporting motor, a shearing component and a control component. According to the device, single-layer and double-layer rutting plate forming and shear resistance tests are realized, the internal temperature and the interlayer stress state of the asphalt pavement under actual working conditionsare simulated, the problems that an asphalt mixture rutting plate test piece is complex in forming and inconvenient to demold, stress and temperature of the test piece are inconsistent with reality and the like are solved, the forming efficiency of the test piece is improved, the test error of a traditional shear test is reduced, and the development prospect is wide.

Description

technical field [0001] The invention belongs to the field of road engineering and relates to a rutting plate forming device with the function of testing the shear resistance. Background technique [0002] With the rapid growth of traffic volume, the asphalt pavement is prone to rutting, hugging, pushing and other diseases under the long-term action of vehicle load. These diseases are mainly caused by the lack of shear performance between asphalt mixture and pavement, so the shear performance of asphalt mixture is usually tested by single-layer rutting board, and the shear performance of asphalt pavement is tested by double-layer rutting board. . However, in the process of forming the test piece, there are problems such as complicated manufacturing process, difficult demoulding, and damage to the internal structure of the test piece; in the shear performance test between asphalt mixture and asphalt pavement, there are problems such as the force of the test piece and the temp...

Claims

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Application Information

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IPC IPC(8): G01N1/36G01N1/44G01N3/24
CPCG01N1/36G01N1/44G01N3/24G01N2203/0676
Inventor 王梦浩王朝辉宋亮董刚孙泽强徐岩李永刚樊振通
Owner CHANGAN UNIV
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