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Method for testing accelerating and loading of main drive wheel type pavement materials and device

A pavement material, accelerated loading technology, used in measuring devices, using repetitive force/pulse force to test the strength of materials, analyzing materials, etc. Simple, wide range of application, convenient test operation effect

Inactive Publication Date: 2009-09-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The impedance tube method is an indirect measurement method, and the test results are greatly affected by the frequency of the incident wave, so it is difficult to accurately control the test temperature
Another potential problem is how to limit sound to only travel through porous surfaces to avoid energy loss

Method used

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  • Method for testing accelerating and loading of main drive wheel type pavement materials and device
  • Method for testing accelerating and loading of main drive wheel type pavement materials and device
  • Method for testing accelerating and loading of main drive wheel type pavement materials and device

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Embodiment Construction

[0038] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] Asphalt concrete specimen specification of the present invention is long 300mm * wide 300mm * thick 50mm; Driving wheel adopts 4.00-8 tire, and rotating speed is 0~300r / min; Driven wheel external diameter 1100mm, deep groove 100mm, width is 315mm, so that for Sufficient space is reserved for the lateral deformation of the specimen, and the rotational speed is 0-121r / min; the pressurization range of the hydraulic device is 0-1.0MPa; the temperature range of the constant temperature chamber is 25-70°C.

[0040] Such as Figure 1 to Figure 5 As shown, the main drive wheel type pavement material accelerated loading test device of the present invention includes a console 1, a PLC control box 2, an electric box 3, a hydraulic device 4, a motor 5, a brake 6, a transmission chain and a sprocket 7, and a drive Wheel 8, driven wheel 10, water ba...

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Abstract

The invention discloses a method for testing accelerating and loading of main drive wheel type pavement materials and a device thereof. The device comprises a control console, a PLC control box, an electronic box, a hydraulic device, a motor, a brake, a driving chain and chain wheel, a drive wheel, a driven wheel, a water bath tank, a circulated air inlet duct, a thermostatic chamber, a test cabinet and a circulated air outlet duct; the control console is positioned on the outside of the test cabinet; the hydraulic device is connected with the driven wheel; the motor is connected with the drive wheel via the driving chain and chain wheel; the drive wheel is fixed on a bracket; the driven wheel is positioned in a guide slot; the water bath tank is arranged right below the driven wheel; a ranging laser is positioned on one side of the driven wheel; one end of the drive wheel is provided with a microphone and the bottom thereof is provided with a torque sensor; the contact surface of the drive wheel and a test piece is provided with a pressure sensor; two tachometers are fixed on the bracket and are respectively positioned on the outsides of the drive wheel and the driven wheel. The device has simple structure, low prices, flexible use and good reliability.

Description

technical field [0001] The invention relates to an accelerated loading test method and device for a main drive wheel type pavement material, belonging to the field of material testing. Background technique [0002] The main modes of action of the wheel load on the asphalt pavement are: the vertical pressure transmitted to the road surface by the wheels, resulting in permanent deformation or rutting of the road surface; the horizontal force exerted on the road surface due to braking, speed change, steering and overcoming various resistances in the process of advancing, making the road surface Shear damage such as pushing deformation occurs, and the surface of the aggregate is gradually polished, resulting in a decline in the anti-skid performance of the asphalt pavement surface; due to the unevenness of the road surface, the bumping of the car and the vibration of the car parts, the impact force and vibration force applied to the road surface, With the friction between the ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01N3/56G01N3/34G01N5/00G01N19/02G01B11/16
Inventor 王端宜雷超旭
Owner SOUTH CHINA UNIV OF TECH
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