Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Quantitative evaluation method for water-resistant stripping performance of asphalt and aggregate

A water-stripping, asphalt mixture technology, applied in the direction of removing certain components such as weighing, measuring devices, analyzing materials, etc., can solve the problem that the comprehensive stripping of asphalt aggregates cannot be fully reflected.

Inactive Publication Date: 2018-12-28
CHINA GEZHOUBA GRP HIGHWAY OPERATION CO LTD
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of asphalt stripping, peeling will occur between the asphalt and the asphalt and between the asphalt and the aggregate interface. The method of visually measuring the exposed area of ​​the aggregate can only reflect the peeling of the asphalt-aggregate interface, and there is a large error , cannot fully reflect the comprehensive stripping of asphalt aggregates in the boiling process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Quantitative evaluation method for water-resistant stripping performance of asphalt and aggregate
  • Quantitative evaluation method for water-resistant stripping performance of asphalt and aggregate
  • Quantitative evaluation method for water-resistant stripping performance of asphalt and aggregate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example

[0060] Implementation case: Select five common aggregates (basalt, limestone, diabase, hornshanite, broken gravel) and two kinds of matrix asphalt in road engineering, which are recorded as A and B respectively, and carry out the test according to the above steps.

[0061] Table 1 A bitumen test results (%)

[0062]

[0063] Table 2 B asphalt test results (%)

[0064]

[0065]

[0066] It can be seen from the test results that no matter it is A or B asphalt, the ranking of the comprehensive stripping rates of the five aggregates is: basalt<limestone<granite<quartz sandstone<broken gravel, which shows that basalt has better water stripping resistance and broken gravel The water stripping performance is poor, which is consistent with the actual situation in the project.

[0067] In the test results of asphalt B, the bare areas of basalt, limestone, and granite surfaces are all close to 0%, and it is difficult to evaluate the performance of water stripping by observing th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a quantitative evaluation method for water-resistant stripping performance of asphalt and aggregate. The quantitative evaluation method comprises the steps of acquiring aggregate with grain sizes being 13.2-19 millimeters, and marking mass as m0; uniformly stirring the aggregate and hot asphalt to form an asphalt mixed material, marking mass as m1; performing water bath one asphalt mixed material, and weighing and marking mass as m2 after drying; acquiring asphalt mass loss rate T1 according to a formula: T1=(m1-m2) / (m1-m0)*100%, wherein the T1 is used for representingstripping condition between asphalt membranes; determining surface exposure rate T2 of the aggregate, wherein the T2 represents stripping condition between the asphalt membranes and aggregate pastinginterface; and obtaining integral stripping rate T according to a formula: T=(T1+T2) / 2. According to the method, the water-resistant stripping capability is evaluated in a quantitative form, and personal error is reduced to the greatest extent; and therefore, the stripping conditions between the asphalt membranes and between the asphalt membranes and the aggregate surface are comprehensively considered, and the evaluation result is more comprehensive and objective.

Description

technical field [0001] The application relates to the technical field of highway engineering tests, in particular to a method for quantitatively evaluating the water-stripping resistance of asphalt and aggregates. Background technique [0002] Most of the highways in our country are asphalt pavement. The water-stripping performance of asphalt and aggregates directly affects the water damage resistance of asphalt mixture. How to accurately evaluate the water-stripping ability of asphalt and aggregates is the raw material of road engineering. An important question in the experiment. [0003] The current "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" stipulates that the evaluation can be carried out by boiling or water immersion, and the adhesion can be reflected by observing the peeling degree of the asphalt film. Although this method is simple and easy to implement, it has large human errors. In the process of asphalt stripping, peeling will occu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N21/84
CPCG01N5/04G01N21/84
Inventor 郑松松屈庆余李振珂郭璞
Owner CHINA GEZHOUBA GRP HIGHWAY OPERATION CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com