Bitumen-like material creep test device

A creep test and asphalt technology, applied in the field of testing equipment, can solve the problems of high complexity of equipment, expensive equipment, and high equipment maintenance cost, and achieve the effect of shortening design size, simple equipment and easy maintenance.

Inactive Publication Date: 2015-09-09
HEBEI UNIV OF ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although electro-hydraulic servo testing machines and pneumatic testing machines have high precision, the complexity of the equipment is relatively high. Once the equipment stops, professionals need to repair it. The daily maintenance cost of the equipment is high, and it is difficult to popularize due to expensive equipment. application

Method used

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  • Bitumen-like material creep test device
  • Bitumen-like material creep test device
  • Bitumen-like material creep test device

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Experimental program
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Embodiment Construction

[0019] The research idea of ​​the present invention is to adopt a three-stage turn-back lever booster system, and to apply a constant external force through weight loading and a lever structure, so as to realize the creep performance test of asphalt materials. At the same time, the angle feed system is used to compensate the small deformation of the specimen during the creep process, so that the lever booster mechanism maintains better working performance. The finite element method is used to calculate and analyze the internal force and deformation of the creep testing machine, and check the component stress, so as to ensure that the machine has good strength and stiffness characteristics.

[0020] like image 3 Shown is the working principle diagram of the foldback three-stage series booster three-stage lever booster structure. The device is mainly composed of three-stage series booster levers and a dowel bar in the middle. If a downward force F is applied to the right end ...

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Abstract

The invention discloses a bitumen-like material creep test device comprising a test table, a support, a pressure head component, a three-stage lever reinforcement structure and a temperature control mechanism. The support comprises a front pillar and a rear pillar; the three-stage lever reinforcement structure comprises a first lever, a second lever, a third lever, a first pillar, a second pillar and a tray; the tray is hinged to the first lever, the first lever and the third lever are hinged to the front pillar, and the second lever is hinged to the rear pillar; the first pillar is hinged to the first lever and the second lever, respectively; the upper and lower ends of the second pillar are hinged to the second lever and the third lever, respectively; the third lever is hinged to the pressure head component used for clamping a sample, the sample is disposed inside the temperature control mechanism. The device has the advantages that the applied force is amplified, the range of a lever creep system is increased, the running state of equipment is controlled through a micro-displacement compensation system, the structure of the device is simple, and the disassembly and maintenance of the device are easy.

Description

technical field [0001] The invention relates to the technical field of detection equipment, in particular to an asphalt material creep test device. Background technique [0002] Asphalt is a typical viscoelastic material, which leads to rutting deformation of asphalt concrete at high temperature, which affects the performance of asphalt pavement. In addition, under low temperature environment, the viscoelastic properties of asphalt will affect the relaxation properties of asphalt concrete, thereby reducing the cracking of asphalt pavement [1] . Therefore, studying the viscoelastic deformation characteristics of asphalt and asphalt concrete is an effective way to evaluate the high and low temperature performance of asphalt pavement. [0003] Creep test is an effective method to evaluate the deformation characteristics of viscoelastic materials. For a long time, in order to explore the creep performance of asphalt materials, many scholars have used different test equipment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01N3/02
Inventor 郭庆林孟文清李黎丽王志青高颖董辉韩晓斌吴平川卞艳山
Owner HEBEI UNIV OF ENG
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