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Method for evaluating aging performance of asphalt material and method for evaluating ageing property of asphalt material

An asphalt material and evaluation method technology, which is applied in the field of asphalt material aging performance evaluation and asphalt material aging property evaluation field, can solve the problems of inability to accurately simulate asphalt aging, inability to accurately evaluate asphalt performance, lack of evaluation methods, etc. Wide range, avoid the influence of material properties, evaluate the effect of accurate results

Inactive Publication Date: 2019-04-05
HUBEI UNIV OF ARTS & SCI
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Problems solved by technology

The traditional thin film aging test cannot accurately simulate the aging of asphalt under on-site construction conditions. Due to the rheological properties of asphalt, it has different viscosity values ​​at different shear rates. The viscosity without shear rate limitation is used It is also not advisable to evaluate the viscous performance of asphalt
[0003] The existing methods for evaluating the aging performance of asphalt materials cannot accurately evaluate the performance of asphalt under actual working conditions, so that operators lack accurate evaluation of the performance of materials such as asphalt, especially the aging performance under working conditions method

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0030] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention provides a method for evaluating an aging performance of an asphalt material and a method for evaluating an ageing property of an asphalt material, and relates to the technical field ofan engineering material. The method for evaluating the ageing property of the asphalt material tests rheological performance indexes of the material, draws a principal curve of the rheological performance indexes, and solves a displacement factor of the rheological performance indexes based on the principal curve. A qualitative relationship between the displacement factor, the temperature and a reaction activation energy is combined to obtain a relationship between the aging performance, the activation energy and a reaction rate. The activation energy in different aging states is inconsistent;the greater the activation energy, the lower a temperature sensitivity and the lower the aging performance; the greater the reaction rate in the different aging states, the less stable the rheological state of the material, and the lower the aging performance. The method for evaluating the ageing property of the asphalt material evaluates accurately the aging performance of the asphalt material by calculating chemical reaction kinetic parameters such as the activation energy, a pre-exponential factor and the reaction rate of the asphalt material in the different aging states.

Description

technical field [0001] The invention relates to the technical field of engineering materials, in particular to a method for evaluating the aging performance of asphalt materials and a method for evaluating the aging properties of asphalt materials. Background technique [0002] In conventional methods, there are many deficiencies in the evaluation of asphalt aging. The traditional thin film aging test cannot accurately simulate the aging of asphalt under on-site construction conditions. Due to the rheological properties of asphalt, it has different viscosity values ​​at different shear rates. The viscosity without shear rate limitation is used It is also not advisable to evaluate the viscous performance of asphalt by using the value. [0003] The existing methods for evaluating the aging performance of asphalt materials cannot accurately evaluate the performance of asphalt under actual working conditions, so that operators lack accurate evaluation of the performance of mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/42
CPCG01N33/42
Inventor 王元元郭诗言曹林涛
Owner HUBEI UNIV OF ARTS & SCI
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