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Computer simulation based method for evaluating interaction of asphalt and mineral powder

An evaluation method and computer technology, applied in the direction of calculation, computational theoretical chemistry, special data processing applications, etc., can solve problems that cannot directly characterize the interaction between asphalt and mineral powder, and achieve low human influence, simple and convenient operation, and high precision. Effect

Inactive Publication Date: 2017-01-11
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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Problems solved by technology

At present, there are no corresponding related tests and characterization parameters for the interaction ability of asphalt-mineral powder, and the existing test technology cannot directly characterize the interaction between bitumen-mineral powder

Method used

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  • Computer simulation based method for evaluating interaction of asphalt and mineral powder
  • Computer simulation based method for evaluating interaction of asphalt and mineral powder
  • Computer simulation based method for evaluating interaction of asphalt and mineral powder

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Embodiment Construction

[0021] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.

[0022] A method for evaluating the interaction between bitumen and mineral powder based on computer simulation, the specific steps are as follows:

[0023] (1) Construction of asphalt molecular structure model

[0024] The composition, structure and existence form of asphalt are very complicated, adopt average molecular model to set up asphalt polymer model among the present invention, and its average molecular formula is C 64 h 52 S 2 , the average molecular structure of asphalt can be edited by referring to the relevant parameters.

[0025] In order to obtain a polymer molecular structure with a reasonable conformation, the Amorphous Cell module can be used. Throug...

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Abstract

The invention discloses a computer simulation based method for evaluating the interaction of asphalt and mineral powder. The method includes the following steps: S1, constructing asphalt molecular structure model; S2, building calcium carbonate supercell model; S3, constructing asphalt-mineral powder structure model; S4, calculating the interaction energy, evaluating the interaction of asphalt and mineral powder according to the interaction energy parameter E and the change angle phi of a molecular plane configuration. The computer simulation based method for evaluating the interaction of asphalt and mineral powder makes up the insufficiency of experiment, and through the computing mechanism modeling, dynamic simulation can be conducted, the method is high in precision, small in man-made influences and reliable results, and the operation is simple and convenient; The interaction energy parameter E and change angle phi between asphalt molecules and CaCO3 can reflect the bond strength of asphalt molecules and CaCO3 to a certain extent, the adhesion of asphalt and mineral powder under different temperature can be further evaluated.

Description

technical field [0001] The invention belongs to the technical field of performance evaluation of road asphalt pavement materials, and in particular relates to an evaluation method for the interaction between asphalt and mineral powder. Background technique [0002] Studies have shown that the damage of asphalt pavement has a great relationship with the properties of the interface area between asphalt and mineral powder. The interaction ability between asphalt and slag powder directly affects the properties of asphalt mixture. The stronger the interaction ability between asphalt and slag powder, the tighter the interface structure between asphalt and slag powder, and the better the overall performance of asphalt mixture. It is of great significance to prolong the service life of the pavement to study the interaction mechanism of asphalt-mineral powder, so as to effectively solve the problems of early failure of asphalt pavement. At present, there are no corresponding tests a...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16C10/00
Inventor 徐霈谭巍王伟李菁若王全磊章一颖辛顺超金军伟
Owner CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
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