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Evaluation device and method for reflection crack resistance of asphalt mixture

An asphalt mixture and anti-reflection technology, which is applied in the direction of applying repeated force/pulsation force to test the strength of materials, can solve the problems of technology selection and use blindness, and there is no evaluation method for the anti-reflection crack ability of the comparison system, so as to reduce reflection Cracks and the effect of prolonging the service life

Inactive Publication Date: 2014-08-06
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0008] The purpose of the present invention is to provide an evaluation equipment and method for anti-reflection cracks of asphalt mixture, aiming to solve the problem that there is no relatively systematic evaluation method for anti-reflection cracks in my country, which makes the selection and use of related technologies blind.

Method used

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  • Evaluation device and method for reflection crack resistance of asphalt mixture
  • Evaluation device and method for reflection crack resistance of asphalt mixture

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] figure 1 and figure 2 Shown is the structure of the asphalt mixture anti-reflection crack evaluation equipment of the present invention, as shown in the figure, the present invention is realized in this way, a kind of asphalt mixture anti-reflection crack evaluation equipment comprises a vertical loading device 1, a fixed plate 3 , sliding plate 4, positioning iron block 5, horizontal sliding device 6, workbench 7; fixed plate 3 and sliding plate 4 are installed on the described workbench 7, and positioning iron block 5 is placed between the fixed plate and the sliding plate, horizontally ...

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Abstract

The invention discloses an evaluation device and method for reflection crack resistance of an asphalt mixture. The evaluation device comprises a vertical loading device, a fixed plate, a sliding plate, a horizontal sliding device and a workbench; the fixed plate and the sliding plate are mounted on the workbench; the horizontal sliding device is mounted on the workbench and connected to the sliding plate; the vertical loading device is vertically mounted on the workbench and is positioned above a bearing plate; a test piece is placed on the fixed plate and the sliding plate, and below the vertical loading device. Through the adoption of the evaluation device and method, the number of reflection cracks in an asphalt pavement is reduced, the service life of the asphalt pavement is prolonged, and the evaluation device and method are of great significance.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to an evaluation device and method for anti-reflection cracks of asphalt mixture. Background technique [0002] Reflective cracks are one of the main damage types of asphalt pavement at present, that is, there are initial cracks in the structural layer under the asphalt pavement, and stress concentration will occur under the action of driving, which will cause upward reflection and expansion to cause cracking of the asphalt layer. The initial cracks of the structural layer under the asphalt surface generally include two aspects: when using a semi-rigid base, because the semi-rigid materials such as cement stabilized gravel are a volume shrinkage process in the process of strength formation, a certain amount of cracks will inevitably occur. Secondly, when roller compacted concrete and cement concrete are used as the base, or when the asphalt layer is added to the old cemen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/36
Inventor 魏建国李平方薇高新文丁吉喜郑瑞红白爱明郭香红刘庭
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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