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Testing device and evaluation method of antistrip performance of bituminous mixture

A technology of asphalt mixture and testing device, which is applied in the direction of measuring device, using mechanical device, analyzing materials, etc., to achieve the effect of high accuracy, simple structure and intuitive evaluation method

Inactive Publication Date: 2014-08-06
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no similar related equipment and evaluation method for testing the spalling performance of asphalt mixture at home and abroad.

Method used

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  • Testing device and evaluation method of antistrip performance of bituminous mixture
  • Testing device and evaluation method of antistrip performance of bituminous mixture
  • Testing device and evaluation method of antistrip performance of bituminous mixture

Examples

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Comparison scheme
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Embodiment

[0036] a kind of like figure 1 Shown is the anti-stripping performance test device of asphalt mixture of the present invention. The test device includes a base platform 6, a column 1 and a liftable platform 5. The column 1 is connected to the base platform 6. The liftable platform 5 is installed on the column 1. The lifting platform 5 is equipped with a reducer 3 connected to the motor 4. The reducer 3 is connected with the wire brush 8 located below the liftable platform 5 through a coupling 9. The densely distributed steel wires 83 on the wire brush 8 are facing the base platform 6. The set test piece placement groove 13.

[0037] In the test device of the present embodiment, the liftable platform 5 is equipped with a timer 2 capable of recording the scraping time between the wire brush 8 and the surface of the test piece 7 . A temperature control box 10 covering a wire brush 8 and a test piece placement groove 13 is installed on the base platform 6 , and a temperature cont...

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PUM

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Abstract

The invention discloses a testing device of antistrip performance of bituminous mixture. The testing device comprises a base platform, a vertical column, a liftable platform and a steel wire brush, wherein the vertical column is arranged on the base platform, the liftable platform is installed on the vertical column, a motor and a speed reducer are installed on the liftable platform, the speed reducer is connected with the steel wire brush through a coupler, and steel wires densely distributed on the steel wire brush right face a test piece placing groove on the base platform. The invention further discloses an evaluation method which comprises the following steps of drying a test piece to be tested to constant weight, weighing the test piece and fixing the test piece; staring a temperature controller to enable the inner temperature of the test piece to reach the test temperature; placing the steel wire brush on the surface of the test piece and sleeving an annular counter weight on the steel wire brush; staring the motor, driving the steel wire brush to rotate on the surface of the test piece through the speed reducer and the coupler, and performing counting; taking out the test piece to perform weighing after set time; and finally evaluating the antistrip performance of the test piece according to a formula of peeling rate per unit area. The evaluation method has the advantages of being simple and easy to operate, visual, accurate and reliable in evaluation result, and the like.

Description

technical field [0001] The invention relates to a test device and an evaluation method for the physical and mechanical properties of asphalt materials, in particular to a test device and an evaluation method for the anti-stripping ability of asphalt materials. Background technique [0002] When the car is running on the asphalt road surface, in addition to the vertical load on the road surface, it will also produce horizontal force. Under the action of this horizontal force, the asphalt mixture on the road surface will cause abrasion of asphalt mortar and peeling of aggregates, which will affect the roughness and flatness of the asphalt pavement surface, thereby affecting driving safety and durability of asphalt pavement. [0003] When the bonding performance of the asphalt binder is poor, or there is less asphalt binder around the aggregate (such as large-pore water-permeable asphalt mixture, or the area where there are relatively more coarse aggregates caused by constructi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04
Inventor 田小革黄学文于斌
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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