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Pavement coupled temperature test device and test method under coupled load and temperature

A technology of temperature test and test method, which is applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve problems such as excessive precision, and achieve the effects of simple structure, high degree of automation and convenient use.

Active Publication Date: 2016-01-06
CHANGAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] A technical problem to be solved by the present invention is to overcome the shortcomings of the existing road surface coupling temperature test device and test method under the coupling effect of load and temperature, and to provide a test method with high test accuracy, good stability, simple operation and high degree of automation. Pavement coupling temperature test device under the coupling effect of load and temperature

Method used

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  • Pavement coupled temperature test device and test method under coupled load and temperature
  • Pavement coupled temperature test device and test method under coupled load and temperature
  • Pavement coupled temperature test device and test method under coupled load and temperature

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Embodiment 1

[0033] exist figure 1 Among them, the test device for road surface load and temperature coupling of the present invention consists of a base 1, a laser 2, a simulation box 3, a fluorescent lamp 4, a temperature sensor 5, a counterweight 6, a support frame 7, a roller 8, a guide rail 9, a stepping motor 10, An optical fiber temperature sensor 11, an open heat-insulated container 12, a computer 14, a programmable controller 15, a spectrometer 16, a coupler 17, and a heater 18 are connected to form.

[0034]An open heat insulating container 12 is placed on the base 1, and the open heat insulating container 12 is a transparent glass vessel, and a road test piece 13 is placed inside the open heat insulating container 12, and an optical fiber temperature sensor is horizontally embedded in the upper layer of the road test piece 13 11. The incident end and the outgoing end of the optical fiber temperature sensor 11 are respectively exposed through the two sides of the road test piece ...

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Abstract

The invention discloses a pavement coupling temperature test device under coupling of load and temperature, and a test method. According to the test device and the test method, the design that a receiving fringe moves due to the fact that laser is influenced by temperature change and pressure change in spreading in an optical fiber is utilized; the temperature of the test device is controlled by heaters and an ambient temperature sensor; the load is applied by a loading device and rollers; and the temperature change of a pavement specimen under the load is tested by an optical fiber temperature sensor. The test device is reasonable in design, simple in structure, convenient to use, high in testing accuracy and high in automation degree.

Description

technical field [0001] The invention belongs to the application technical field of temperature coupling effect testing under the coupled action of road surface load and temperature field, and in particular relates to a road surface coupled temperature test device and a test method under the coupled action of load and temperature field. Background technique [0002] Asphalt mixture is the most commonly used base material in road paving, but it is also a temperature sensitive material. When the external environment temperature changes, the unstable heat flow in the pavement forms the temperature field and temperature gradient of the pavement structure, causing the pavement material to undergo temperature deformation. When temperature deformation is restricted and cannot be released, temperature stress will be generated inside the pavement structure. If the temperature stress generated is greater than the strength of the material, it will lead to material failure. However, in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18
Inventor 张久鹏贺明明杜慧黎宇阳孙昌乐陆瑞国刘乙丁刘虎军张梦丽王凯任仲山裴建中李蕊
Owner CHANGAN UNIV