Method for testing surface energy of asphalt material

A test method and technology of asphalt materials, which are applied in the field of road engineering, can solve the problems of lack of test methods and evaluation indicators, and achieve the effects of short test time, simple data processing, and easy test conditions

Inactive Publication Date: 2014-02-05
TONGJI UNIV
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Problems solved by technology

At present, domestic research on the water damage of asphalt pavement mainly focuses on the exploration of the macroscopic test methods and indicators of asphalt-aggregate adhesion and water stability of the mixture, and the analysis of the water stability of the asphalt mixture in the microscopic aspect is still lacking. Corresponding test methods and evaluation indicators

Method used

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  • Method for testing surface energy of asphalt material
  • Method for testing surface energy of asphalt material
  • Method for testing surface energy of asphalt material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1. Prepare the glass sheet used for the test. The size is 50mm in length, 24mm in width and 0.15mm in thickness. Soak it in the pre-prepared alcohol solution (ethanol content ≥ 95%) for 1 day and take it out.

[0026] 2. Rinse the taken out glass piece with clean water and then soak it in distilled water for 1 day to ensure that the active ions on the glass piece are completely removed.

[0027] 3. Take out the glass piece, wipe off the water on the glass piece with gauze or lens cleaning paper, and hang it on the hook for later use. Be careful not to touch the glass with your fingers during the wiping process, so as not to leave fingerprints.

[0028] 4. After the preparation of the glass sheet is completed, the asphalt glass sheet sample is made. First heat the asphalt sample to be tested to a melting state, then immerse the glass plate in the asphalt sample for 1-3 seconds, and the immersion depth is 10-15mm to ensure that the glass plate is fully in contact with t...

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Abstract

The invention relates to a method for testing the surface energy of an asphalt material. The method comprises the following steps: (A) preparing a glass sheet for testing; (B) preparing an asphalt sample; (C) selecting and checking a testing solution, and performing subsequent testing after the checking is passed; and (D) opening testing software, regulating a sample table, starting testing, recording testing data, and calculating a contact angle value. The sample is treated prior to the testing under the conditions that the heat insulation treatment temperature is 120 DEG C, the heat insulation treatment time is 2 hours, the maintenance time is 2 days at the temperature of 25 DEG C and the testing time in a testing process is controlled to be 20-60 seconds. The method for testing the surface energy of the asphalt material, provided by the invention, has the advantages of simple previous preparation process, controllable testing conditions, short testing time, simplicity in data processing, low testing variable coefficient and high data reproducibility. The method lays a testing foundation for accurately acquiring surface energy parameters of the asphalt material.

Description

technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a method for testing the surface energy of asphalt materials. Background technique [0002] With the popularity of asphalt pavement, many engineering examples have proved that the water damage of asphalt pavement will seriously reduce the performance of pavement. The current evaluation methods and indicators are to judge the water stability of asphalt mixture from the macroscopic level, but rarely analyze the water damage process of asphalt mixture from the mechanism of water action, influencing factors, and water stability improvement measures and mechanisms. Research. In response to this problem, foreign scholars have found that the use of surface energy theory and testing methods to study the water stability of asphalt mixtures has very good results through continuous exploration. At present, domestic research on the water damage of asphalt pavement mainly focuse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/00G01N1/28
Inventor 李立寒孙瑜
Owner TONGJI UNIV
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