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A method and device for measuring the fluidity improvement coefficient of regenerant

A measurement method and regenerant technology, applied in the direction of measuring devices, flow characteristics, specific gravity measurement, etc., can solve the problems of inability to adapt to asphalt mixture, etc., and achieve the effect of simple, feasible and high operability in the testing process

Active Publication Date: 2021-04-09
FOSHAN TRANSPORTATION SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet this test method is only suitable for the very strong cement slurry of fluidity, can't adapt to the viscous asphalt mixture in the present invention

Method used

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  • A method and device for measuring the fluidity improvement coefficient of regenerant
  • A method and device for measuring the fluidity improvement coefficient of regenerant
  • A method and device for measuring the fluidity improvement coefficient of regenerant

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Embodiment 1

[0071] This embodiment provides a method for determining the fluidity improvement coefficient of the regenerant, which includes:

[0072] (1) Take the first regenerated asphalt mixture without adding regenerant and the second regenerated asphalt mixture with regenerated agent added;

[0073] (2) Measure the maximum theoretical density γ of the first recycled asphalt mixture respectively 1 and the maximum theoretical density of the second recycled asphalt mixture γ 2 ;

[0074] Specifically, the maximum theoretical density is measured by the T-0711 method in JTG E20-2011; the measured γ 1 =2.36 g / cm 3 ; 2 =2.34g / cm 3 .

[0075] (3) Take the weight as m 1 Add the first recycled asphalt mixture into the conical test cylinder, and use a scraper to scrape the top of the conical test cylinder;

[0076] Among them, m 1 =0.9k 1 Vγ 1 =0.9×1.02×0.024×2.36×1000=52.00kg;

[0077] Specifically, the conical test cylinder is frusto-conical, with a bottom angle of 81.41° and a bot...

Embodiment 2

[0085] Get commercially available regenerant A and regenerant B, measure according to the method of embodiment 1. The measurement results are as follows:

[0086] Type of regenerant Regenerant fluidity improvement coefficient% Regenerant A 21.24 Regenerant B 38.5

[0087] According to the above results, it can be seen that regenerant B has a greater coefficient of improvement in the fluidity of recycled asphalt mixture, and a better effect on improving the fluidity of recycled asphalt mixture. Therefore, regenerant B can be selected as the actually used regenerant.

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Abstract

The invention discloses a method for measuring the fluidity improvement coefficient of a regenerant, which comprises: taking the first regenerated asphalt mixture without adding a regenerant and the second regenerated asphalt mixture with a regenerated agent, and measuring the maximum theoretical density of the two ; Then put the first regenerated asphalt mixture without regenerated agent and the second regenerated asphalt mixture added with regenerated agent into the conical test cylinder, heat to 130-180°C, keep warm for 1-3 hours, and lift the cone to test Measure the slump area of ​​both cylinders; finally calculate the fluidity improvement coefficient of the regenerant based on the slump area. The invention also discloses a measuring device capable of implementing the measuring method. The invention provides a method for testing the improvement effect of the regeneration agent on the second recycled asphalt mixture, provides quantitative test data, and provides a reference for optimizing and selecting the regeneration agent.

Description

technical field [0001] The invention relates to the field of waste asphalt regenerants, in particular to a method and device for measuring the fluidity improvement coefficient of regenerants. Background technique [0002] The designed service life of asphalt pavement is 10 to 15 years. Nearly one fifteenth of the asphalt pavement in my country needs to be overhauled every year, which will mill a large amount of waste asphalt mixture. These waste asphalt mixtures can be re-paved into the road surface after recycling, which not only saves resources but also protects the environment. After many years of use of asphalt pavement, the aging asphalt penetration of the waste asphalt mixture is low. Therefore, in the process of recycling, it is easy to cause the problems of poor fluidity of the recycled asphalt mixture and easy segregation during the paving process. Therefore, regenerants have been developed in the industry to improve various properties such as the penetration, visc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N11/00G01N33/42G01N9/00
CPCG01N9/00G01N11/00G01N33/42
Inventor 周敏曾国东孟华君常荣华陈忠云李珏池禹卓杰方杨
Owner FOSHAN TRANSPORTATION SCI & TECH CO LTD