Asphalt and ore material adhesion evaluation method based on wetting theory

An evaluation method, asphalt technology, applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems that there is no uniform standard for the surface roughness of mineral materials, affecting asphalt spreading, and the stability of test temperature cannot be guaranteed.

Inactive Publication Date: 2016-05-11
RES INST OF HIGHWAY MINIST OF TRANSPORT +1
View PDF7 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Limited by the test conditions, there is no unified standard for evaluating the adhesion of asphalt and mineral aggregates under high temperature using the wetting theory: the test methods are confusing, and different researchers have adopted different methods and different test standards. Some research results have also been obtained, but the experimental conclusions drawn by different test methods are difficult to unify; the measurement of the contact angle between aspha

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
  • Asphalt and ore material adhesion evaluation method based on wetting theory
  • Asphalt and ore material adhesion evaluation method based on wetting theory
  • Asphalt and ore material adhesion evaluation method based on wetting theory

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the examples.

[0026] According to content of the present invention, concrete implementation steps are as follows:

[0027] Step 1: Select raw materials

[0028] Qinhuangdao 70# matrix asphalt is selected as the asphalt, and the performance indicators of the asphalt are shown in Table 1; Yunluo limestone is selected as the mineral material, and its performance indicators meet the requirements of the physical project used or follow the "Technical Specifications for Highway Asphalt Pavement Construction" (JTGF40-2004) requirements.

[0029] Table 1: Asphalt Performance Index

[0030]

[0031] Step 2: Specimen Preparation

[0032] The lying drop method requires the surface of the sample to be smooth and clean. For the mineral material, this test is to cut the mineral material with a particle size greater than 36mm into thin slices about 3mm thick with a precision cutter, and then use...

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 relates to an asphalt and ore material adhesion evaluation method based on the wetting theory and belongs to the technical field of highway performance measurement. The method is used for evaluating asphalt and ore material adhesion under a condition of high temperature. The method comprises the following steps: measuring the surface tension of high-temperature liquid asphalt by virtue of a pendant-drop method, and measuring the contact angle of the asphalt with the surface of an ore material at the same temperature by virtue of a sessile drop method; and calculating the adhesion work of the asphalt and the ore material so as to evaluate the asphalt and ore material adhesion. Through utilizing the method to evaluate the asphalt and ore material adhesion under the condition of high temperature, the influence of the high-temperature liquid asphalt on the wetting capability of the ore material and the stability of an asphalt mixture can be reflected.

Description

technical field [0001] The invention relates to a method for quantitatively evaluating the adhesion between asphalt and mineral material based on the wetting theory under high temperature conditions, that is, by measuring the surface tension of asphalt and the contact angle of asphalt on the surface of mineral material at the same high temperature and the same set temperature, Furthermore, the adhesion work of asphalt and mineral aggregate is obtained to quantitatively evaluate the adhesion performance of asphalt and mineral aggregate, so as to reflect the influence of asphalt on the wettability of aggregate and the stability of asphalt mixture when it is liquid at high temperature. Background technique [0002] In recent years, the water damage of asphalt pavement has attracted more and more attention. Water damage has greatly reduced the performance and service life of the pavement. The asphalt mixture molding process involves multiple stages of adhesion process, and the a...

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
IPC IPC(8): G01N19/04
CPCG01N19/04
Inventor 王筵铸王旭东张玉贞张蕾周兴业杨光张岩
Owner RES INST OF HIGHWAY MINIST OF TRANSPORT
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap