Method for quantifying new-old asphalt interface fusion degree based on performance of asphalt mixture

A technology of asphalt mixture and old asphalt, which is applied in the field of road engineering-asphalt pavement material regeneration application, can solve the problems of high probability of road surface disease, fluctuation of road performance, ambiguity and uncertainty, etc., to achieve scientific and clear methods, increase speed and effect , the result is accurate and effective

Active Publication Date: 2020-10-02
SHANDONG JIAOTONG UNIV
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Problems solved by technology

However, the existing technology cannot scientifically and clearly quantify and characterize the new-old asphalt interface fusion degree DOB (Degree of Blending, referred to as DOB) in the recycled mixture. Leading to large fluctuations in road performance and high probability and high risk of road surface diseases in actual recycled asphalt pavement projects

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  • Method for quantifying new-old asphalt interface fusion degree based on performance of asphalt mixture
  • Method for quantifying new-old asphalt interface fusion degree based on performance of asphalt mixture
  • Method for quantifying new-old asphalt interface fusion degree based on performance of asphalt mixture

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[0028] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0029] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0030] In the case of no conflict, the embodiments and the features in the embodiments of the present invention ...

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Abstract

The invention discloses a method for quantifying the new-old asphalt interface fusion degree based on the performance of an asphalt mixture. The method comprises the steps of pretreating RAP, and determining synthesis design gradation and the optimal asphalt consumption; screening conventional performance indexes capable of being used for quantitatively calculating the new-old asphalt interface fusion degree DOB, and determining the change relationship of the performance indexes along with the asphalt consumption; determining performance index test results P1, P2 and P3 of the concrete sampleand effective asphalt contents x1, x2 and x3 in a black stone state, an actual regeneration state and a 100% complete fusion state of a new-old asphalt interface; and calculating to obtain the new-oldasphalt interface fusion degree in the actual regeneration state according to the effective asphalt content proportion relationship in different states. According to the method, high-end instrumentsand equipment are not needed, the new-old asphalt interface fusion degree DOB of the recycled mixture can be obtained through a mix proportion design process in a simple and crude engineering field laboratory, and engineering field construction personnel can conveniently judge the RAP regeneration performance in time.

Description

technical field [0001] The invention relates to the technical field of road engineering-asphalt pavement material regeneration application, in particular to a method for quantifying the fusion degree of new-old asphalt interface based on the performance of asphalt mixture. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] At present, the asphalt pavement of high-grade roads has entered a development stage and mode in which construction and maintenance go hand in hand. As the service life of the completed asphalt pavement is approaching alternately and under the action of repeated driving loads, temperature and humidity environmental cycles and other comprehensive factors, the performance of asphalt pavement materials will deteriorate significantly. Traditionally, the asphalt pavement material RAP (Reclaimed Asphalt Pavement, RAP) with degra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C20/30E01C7/18
CPCG16C20/30E01C7/18Y02W30/91
Inventor 陈龙陈宏斌李朋
Owner SHANDONG JIAOTONG UNIV
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