Forming device for testing specimens of fretting wear between particles of open-graded water-stabilized gravel
A water-stabilized gravel and fretting wear technology, which is applied in the field of material performance testing and cement concrete performance testing research, can solve the problems of poor quality and low precision, and achieve the effects of simple structure, reduced interference, and simple operation
Active Publication Date: 2021-06-25
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0006] The purpose of the present invention is to provide a fretting abrasion test sample forming device between open-graded water-stabilized gravel particles to solve the problems of low molding precision and poor quality of the samples used for the study of microscopic properties between open-graded water-stabilized gravel particles. Realize the micron-level precision control of the fretting wear test sample forming between the open-grade water-stabilized gravel particles
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[0040]The present invention will be clearly and completely described below in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it needs to be particularly pointed out that: the technical solutions and technical features provided in each part of the present invention, including the following description, in the case of no conflict, these technical solutions and Technical features can be combined with each other.
[0041] In addition, the embodiments of the present invention referred to in the following descriptions are usually only some of the embodiments of the present invention, not all of the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection ...
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Abstract
The invention discloses a sample forming device for fretting abrasion testing among particles of open-graded water-stabilized crushed stone, and relates to the technical field of material performance testing and research. It is characterized in that it is mainly composed of three parts: a distance adjusting device, a forming device, and a leveling and shock absorbing device. The distance adjusting device includes a transmission rod, a bracket for fixing the transmission rod, a coarse adjustment mechanism and a fine adjustment mechanism of the transmission rod, and a dial indicator connected to the top of the transmission rod; the forming device includes a grouting device and a fixer, a ball sample is fixed in the fixer, a mold is placed below the vertical line of the ball sample, and the mold is placed inside the curing box; the leveling and shock absorbing device includes the lower part of the curing box The support, the top surface of the support is arranged with two axially vertical long vials with an accuracy of 2 seconds, the bottom surface of the support is provided with a leveling base, and a rubber pad is provided under the leveling base. The invention can realize the micron-level control of the formation of the micron-level test sample for the fretting wear between the particles of the open-graded water-stabilized crushed stone.
Description
technical field [0001] The invention relates to the technical field of material performance testing and research, in particular to the technical field of cement concrete performance testing and research, in particular to a sample forming device for fretting abrasion testing between grading water-stabilized gravel particles. Background technique [0002] Open-graded cement-stabilized macadam with a porous internal structure (for ease of expression, collectively referred to as "open-graded water-stabilized macadam" in the manual) has good mechanical properties and excellent water permeability, and is one of the most commonly used permeable base types for permeable pavements. one. Permeable pavement usually allows vehicles to pass through a small axle load. In addition to the stress diffusion effect of the surface layer, the upper traffic load transmitted from the surface layer on the open-grade water-stabilized gravel permeable base is relatively small in magnitude, which is a...
Claims
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IPC IPC(8): G01N1/36
CPCG01N1/36G01N2001/366
Inventor 陈德沈明亮周仲荣莫继良王泗钱蜻蜓刘玮郭敏茹袁吕曹雪梅张浩然吴太恒娄星宇钱康凯吴景攀
Owner SOUTHWEST JIAOTONG UNIV