Method based on atomic force microscope for researching microscopic characteristics of asphalt

Abstract

The invention provides a method based on an atomic force microscope for researching microscopic characteristics of asphalt. The method comprises the following steps: preparing an asphalt sample for atomic force microscope observation, imaging surface morphology, performing high-precision and quantitative analysis on roughness and analyzing adhesion; (1) preparing the asphalt sample so as to enable the asphalt sample to meet observation requirements of the atomic force microscope; (2) imaging the surface morphology: observing the size and density of a honeycomb structure in a selected area on the surface of the asphalt sample from a two-dimensional angle and with a high resolution by using the atomic force microscope; (3) performing high-precision and quantitative analysis on the roughness: acquiring a roughness parameter in the image area of the atomic force microscope by using proper data analysis software; (4) analyzing the adhesion: acquiring a force curve by using the atomic force microscope, and acquiring an adhesion value through the force curve; (5) quantitatively evaluating the adhesiveness and self-healing performance of the asphalt according to the roughness and adhesion. The method provides an effective way for recognizing and analyzing material properties from a microscopic view for researchers.

Description

technical field [0001] The invention relates to the field of asphalt microscopic performance evaluation, in particular to a research method based on an atomic force microscope for studying the change of asphalt material form before and after modification or aging, and evaluating the adhesion and self-healing ability of the asphalt. Background technique [0002] In recent decades, researchers have conducted extensive and in-depth research on the macroscopic properties of asphalt materials. However, due to the limitations of research scales and methods, these research results are mostly phenomenological and one-sided. If you want to fully understand the properties of asphalt and make physical and chemical modifications for a certain characteristic to design materials that meet actual needs, you must study asphalt from the micro level and deduce the macro and micro laws from the micro perspective. With the advancement of science and technology, more and more instruments make th...

AI Technical Summary

Problems solved by technology

[0002] In recent decades, researchers have conducted extensive and in-depth research on the macroscopic properties of asphalt materials. However, due to the limitations of research scales and methods, these research results are mostly phenomenological and one-sided.

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