Method for determining discrete hardness of different phases of road stones
A determination method and technology of stone materials, applied in the direction of testing material hardness, material analysis using radiation diffraction, material analysis using wave/particle radiation, etc. Differences in hardness, etc.
Inactive Publication Date: 2020-06-05
山西省交通科技研发有限公司
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[0004] The Mohs hardness was proposed by the German mineralogist Moss to indicate the relative hardness of the material. The hardness of the hardest natural diamond is used as the standard, and it is set as 10 grades. The hardness of other materials is between 1 and 10 grades. In this way, the Mohs hardness test is subjective, and it is relatively rough to evaluate the difference in hardness between different substances, and cannot quantitatively analyze and evaluate the hardness between different substances
[0005] Microhardness can quantitatively evaluate the hardness of different substances. The Vickers hardness is measured using a microhardness tester. The measured value of hardness has a large dispersion, and it is impossible to quantitatively evaluate the overall hardness of road stones.
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0038] see figure 1 , the invention provides a method for determining the discrete hardness of different phases of road stones, comprising the following steps:
[0039] 1) Use XRD (X-ray diffraction, X-ray diffraction) to determine the composition and proportion of different phases in the road stone, specifically: use an X-ray diffraction analyzer to obtain the spectrum of the bauxite clinker powder, and analyze the aluminum based on the spectrum. The proportion of each component in the bauxite clinker powder, similar test methods that can obtain the proportion of the phase composition are applicable.
[0040] Taking six kinds of bauxite clinker A, B, C, D, E, and F as examples, the XRD pattern analysis of bauxite clinker powder is carried out to determine the proportion of bauxite clinker phase composition, and the test results are listed below figure 2 ....
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The invention belongs to the technical field of water conservancy and civil engineering, and relates to a method for determining discrete hardness of different phases of road stones, which comprises the following steps: 1) determining composition and proportion of different phases in road stones; 2) determining the hardness of each mineral component in the road stone or determining the nano hardness of each phase in the road stone; 3) determining the overall average hardness of the stone according to the proportion of each phase and the hardness corresponding to each phase; and 4) finally determining the overall hardness discrete value of the stone according to the obtained average hardness, the proportion of each phase and the hardness corresponding to each phase. The invention provides the method for determining the discrete hardness of different phases of the road stone, which can objectively evaluate the overall hardness of the stone and the dispersion of the hardness of the stone,and provides scientific basic theoretical data for evaluating the skid resistance and the polishing resistance of the road aggregate.
Description
technical field [0001] The invention belongs to the technical field of water conservancy and civil engineering, and relates to a method for determining the properties of pavement materials, in particular to a method for determining the discrete hardness of different phases of road stone materials. Background technique [0002] For hardness, there is no uniform and clear definition including all experimental methods in China. It can be "the ability of a material to resist residual deformation and damage", or "the ability of a material to resist elastic deformation, plastic deformation or damage." . In summary, hardness is a measure of the ability of an object to resist immersion by another object. [0003] Because the hardness test is the most economical and rapid method in the mechanical performance test, and the results of the hardness test can sensitively reflect the differences in the chemical composition, structure and heat treatment process of the material. Therefore,...
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Login to View More IPC IPC(8): G01N3/40G01N23/207
CPCG01N3/40G01N23/20G01N2203/0078G01N2203/0098G01N2203/0218
Inventor 吴喜荣孔繁盛谢立安郭宏杜月林高学凯贺文栋畅晓钰成志强马旭文王芳王帅田静王磊张敏
Owner 山西省交通科技研发有限公司