A kind of workability index tester and test method of asphalt mixture

A technology of asphalt mixture and tester, which is applied in the direction of instruments, flow characteristics, measuring devices, etc., can solve the problems of unfavorable popularization and application, high manufacturing cost, complicated design, etc., and achieve wide applicability, low manufacturing cost and simple structure Effect

Active Publication Date: 2015-08-05
CHANGAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the testing and evaluation of the workability of asphalt mixtures abroad has made great progress, most of the current research in China is still focused on the viscosity test of asphalt, and there are very few existing ones that can pass the workability index of asphalt mixtures. Instruments for directly evaluating the workability of asphalt mixtures, such as Chinese patent CN101251529A, are not conducive to popularization and application because of their complex design and high manufacturing costs

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
  • A kind of workability index tester and test method of asphalt mixture
  • A kind of workability index tester and test method of asphalt mixture
  • A kind of workability index tester and test method of asphalt mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 1 , figure 2 with image 3 As shown, the asphalt mixture and workability index tester of this embodiment includes a bucket 1, a mixing shaft 5, and a torque wrench 7. The top of the bucket 1 is provided with a bucket cover 2, and the bucket cover 2 is provided with a feeding port 4. The stirring shaft 5 is rotatably connected with the barrel cover 2 through a bearing 3, the upper end of the stirring shaft 5 is connected with a torque wrench 7 through a conversion joint 8, and the lower end of the stirring shaft 5 penetrates the barrel cover 2 and extends into the barrel 1 A mixing blade 6 is installed at the lower end of the mixing shaft 5; the torque wrench 7 is a digital torque wrench or a pointer type torque wrench.

[0034] In this embodiment, the bearing 3 is an open deep groove ball bearing. The inner diameter of the bearing 3 is 20 mm, and the outer diameter of the bearing 3 is 52 mm. The conversion joint 8 is an inner hexagon socket joint, and the...

Embodiment 2

[0043] The asphalt mixture and the workability index tester of this example are the same as those of Example 1.

[0044] The method of using the asphalt mixture and workability index tester of this embodiment to test the workability index of the asphalt mixture is the same as in Example 1, except that the asphalt mixture is AC-13 SBS modified Asphalt mixture.

[0045] The workability index K data of the asphalt mixture measured by the asphalt mixture and workability index tester of this embodiment are shown in Table 1.

[0046] Table 1 Test results of workability index K of asphalt mixtures of Example 1 and Example 2 of the present invention

[0047]

[0048] It can be seen from Table 1 that the workability index of the AC-13 base asphalt mixture measured in Example 1 and the workability index of the AC-13 SBS modified asphalt mixture measured in Example 2 all increase with temperature And under the same test temperature and test conditions, the workability index of the AC-13 type SB...

Embodiment 3

[0050] The asphalt mixture and workability index tester of this embodiment is the same as that of embodiment 1, except that the inner diameter of the bearing 3 is 25 mm, and the outer diameter of the bearing 3 is 72 mm. The inner diameter of the barrel 1 is 300 mm, and the depth of the barrel 1 is 300 mm. The number of the mixing blades 6 is three, and the three mixing blades 6 are arranged equidistantly along the axial direction of the mixing shaft 5, and the distance between two adjacent mixing blades 6 is 50 mm. The shape of the stirring blade 6 is rectangular parallelepiped, and the length of the stirring blade 6 is 100 mm, the width is 40 mm, and the thickness is 5 mm. The distance h between the bottom end of the mixing blade near the bottom of the bucket 1 and the bottom of the bucket 1 among the three mixing blades 6 is 50 mm.

[0051] The method for testing the workability index of the asphalt mixture by using the asphalt mixture and workability index tester of this embo...

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

PropertyMeasurementUnit
depthaaaaaaaaaa
lengthaaaaaaaaaa
widthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a tester for a workability index of a bituminous mixture. The tester comprises a charging basket, a mixing shaft and a torque wrench, wherein a barrel cover is arranged on the top of the charging basket; a feeding hole is formed in the barrel cover; the mixing shaft is rotationally connected with the barrel cover through a bearing; the upper end of the mixing shaft is connected with the torque wrench through a conversion joint; the lower end of the mixing shaft penetrates through the barrel cover and stretches into the charging basket; a mixing blade is arranged at the lower end of the mixing shaft; the torque wrench is a digital display type torque wrench or a pointer type torque wrench. The invention also discloses a method for testing the workability index of the bituminous mixture by utilizing the tester. The method comprises the following steps: 1, adding the bituminous mixture into the charging basket; 2, calibrating the torque wrench; 3, rotating the torque wrench to obtain a torque value; and 4, calculating to obtain the workability index of the bituminous mixture by utilizing the torque value. The tester is novel and reasonable in design, wide in application range, good in using effect, high in actionability and convenient to popularize.

Description

Technical field [0001] The invention belongs to the technical field of asphalt mixture and workability index testing, and specifically relates to an asphalt mixture and workability index tester and a testing method. Background technique [0002] The workability of the asphalt mixture is the basic characteristic that characterizes the mixing, paving and compaction performance of the asphalt mixture, and it has a significant impact on the production temperature and construction quality of the asphalt mixture. The poor workability of the asphalt mixture will seriously affect the compaction performance of the asphalt pavement, thereby affecting the construction quality of the asphalt pavement. [0003] At present, the research on the workability of asphalt mixtures at home and abroad is mainly focused on its testing and evaluation methods. As there is no unified standard for testing and evaluating the workability of asphalt mixtures so far, most studies have used asphalt viscosity tes...

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 Patents(China)
IPC IPC(8): G01N11/14
Inventor 刘红瑛阮妨王春汪海年
Owner CHANGAN UNIV
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