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A torsional shear test device for asphalt pavement materials and structures

A technology for asphalt pavement and shear testing, which is applied in the direction of testing the ductility of materials, measuring devices, analyzing materials, etc., and can solve problems such as the inability to accurately reflect the mechanical behavior of asphalt mixture pavements.

Inactive Publication Date: 2011-12-28
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In summary, the existing shear test methods cannot accurately reflect the pavement mechanical behavior of asphalt mixture.

Method used

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  • A torsional shear test device for asphalt pavement materials and structures
  • A torsional shear test device for asphalt pavement materials and structures
  • A torsional shear test device for asphalt pavement materials and structures

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Embodiment Construction

[0025] refer to figure 1 , is a torsional shear test device for asphalt pavement materials and structures of the present invention. An ambient temperature box 2 is arranged on its support 1, a reaction force frame 3 is fixed in the environment temperature box 2, a worm gear mechanism 13 is arranged at the bottom of the reaction force frame 3, and the worm screw input end of the worm gear mechanism 13 is connected to a pressure motor 14, The output end of the worm gear is connected to the lower support plate 12 for clamping the test piece, and the lower support plate 12 is provided with a pressure sensor 11 . The vertical movement of the lower support plate 12 can be realized by the pressure motor 14 and the worm gear mechanism 13, and the vertical pressurization function of the lower support plate 12 on the test piece can be completed.

[0026] At the same time, a torque motor 5 is fixed on the top of the ambient temperature box 2, a bearing 7 is fixed on the top plate of the...

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Abstract

The invention relates to the research field of asphalt pavement materials and structures in highway engineering, and discloses a torsional shear test device for asphalt pavement materials and structures, which is characterized in that it includes a machine base, a reaction force frame arranged on the machine base, and a The worm gear mechanism at the bottom of the reaction force frame, the worm input end of the worm gear mechanism is connected to the pressure motor, the output end of the worm gear is connected to the lower support plate for clamping the test piece, and the pressure sensor is arranged on the lower support plate; the reaction force frame A torque motor is arranged on the top, and the output shaft of the torque motor is connected downwards to the disc torque sensor and the upper support plate for clamping the specimen in turn.

Description

technical field [0001] The invention relates to the research field of asphalt pavement materials and structures in highway engineering, in particular to a torsional shear test device for asphalt pavement materials and structures. Background technique [0002] The pavement paved with asphalt mixture has the advantages of smoothness, anti-skid, comfort, shock absorption and other good performance, high degree of mechanized construction, short construction period, convenient maintenance, etc., and is widely used in highway pavement and airport pavement. Asphalt mixture is a composite material with viscoelastic rheological properties, which is composed of asphalt, coarse aggregate, fine aggregate, mineral powder and external admixture. Due to the origin of the constituent materials, the difference in particle shape, quality, and mix ratio, combined with the pavement structure and functional requirements, different types of mixture compositions can be formed, showing different me...

Claims

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Application Information

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IPC IPC(8): G01N3/26G01N3/28
Inventor 李祖仲陈拴发苑瑞星房建宏熊锐姚运仕岳丹
Owner CHANGAN UNIV
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