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Method for preparing asphalt micro-meso analysis sample by adopting silicone mold

A technology for asphalt and samples, which is used in the field of preparing asphalt micro-analysis samples using silicone molds, and achieves the effects of high flatness, good elasticity and strong tear resistance.

Inactive Publication Date: 2015-04-08
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing asphalt microscopic analysis samples using silica gel molds in order to overcome the limitations of the current asphalt microscopic observation method

Method used

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  • Method for preparing asphalt micro-meso analysis sample by adopting silicone mold
  • Method for preparing asphalt micro-meso analysis sample by adopting silicone mold

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0018] a. Prepare the mould: pour the silica gel into the master mold to form, and obtain the sample preparation mold (2) and the fixed mold (1) after demoulding, and keep the groove of the sample preparation mold (2) smooth;

[0019] b. Heating pouring: put the asphalt in an oven and heat it to a fluid state. The heating temperature of the base asphalt is 120-140°C, and the heating temperature of the modified asphalt is 160-180°C. Then pour the heated asphalt into the sample preparation at room temperature. In the mold (2), make the heated asphalt slightly higher than the surface of the sample preparation mold (2), and then place it in an incubator at 0°C to cool, and the cooling time is 3-5min;

[0020] c. Scraping with a hot knife: heat the scraper to 140-160°C, scrape off the spilled asphalt above the surface of the sample preparation mold (2) with a heating scrap...

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Abstract

The invention discloses a method for preparing an asphalt micro-meso analysis sample by adopting a silicone mold. According to the technical scheme, the method comprises the steps of preparing a mold; heating and pouring; scraping by utilizing a heat knife; carrying out secondary heating; fixing a mold glass slide; cooling and demolding; testing and observing. The mold is prepared by utilizing the characteristics of no toxicity, no odor, stable chemical property, good elasticity, high tensile strength, high temperature resistance, easiness in forming and demolding, and the like of silicon, the prepared analysis sample has a smooth surface, is high in flatness and uniform in thickness, various analysis samples meeting different requirements can be obtained by adjusting the shape, specification and size of a sample preparation mold, so that the specification requirement of test instruments such as a scanning electron microscope, an atomic force microscope and the like for different analysis samples can be met. According to the method, the operation is convenient, the analysis sample forming efficiency is high, the consumption of asphalt is controllable, and the method is ideal for preparing the asphalt micro-meso analysis sample.

Description

technical field [0001] The invention relates to a method for preparing samples of base asphalt or modified asphalt commonly used in road engineering, in particular to a method for preparing asphalt microscopic analysis samples by using a silica gel mold, and belongs to the field of building material detection. Background technique [0002] In the 21st century, with the rapid development of the automobile industry, the expressway has become the inevitable product of the world's economic development. As a continuous road without joints, asphalt pavement is widely used for its stable and comfortable driving, no dust, low noise, and convenient maintenance. According to statistics, more than 90% of the new high-grade pavement in my country is asphalt pavement. The microstructure and interface properties were studied. At present, domestic and foreign codes have specific requirements and control standards for the macro indicators of asphalt materials, and are widely used in practi...

Claims

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Application Information

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IPC IPC(8): G01N1/28
Inventor 崔亚楠韩吉伟张淑艳王乐李震
Owner INNER MONGOLIA UNIV OF TECH
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