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Asphalt content detection method

A technology of asphalt content and detection method, applied in the direction of removing certain components such as weighing, measuring device, material weighing, etc., can solve the problems of limited hitting and strong pertinence, and achieve high sensitivity, accurate distance recognition, Measure precise effects

Pending Publication Date: 2021-05-04
CHONGQING COMM CONSTR GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for detecting asphalt content, which solves the problem of strong pertinence and limitations of the existing indoor rapid asphalt content detection method. Using thermogravimetric analysis method is a relatively reliable analysis method, which can control the temperature rise by program Speed, and real-time weighing, the balance used for weighing has high sensitivity, accurate measurement, real-time research on the relationship between mass and temperature changes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Asphalt content detection method, comprises the following steps:

[0032] (1) Crushing the retrieved asphalt and pavement mixed samples; wherein the particle diameter of the crushed asphalt and pavement mixed samples is less than 3 mm; the crushing method is dry crushing, direct grinding, and cannot be heated and the temperature of the sample cannot be too high;

[0033] (2), stir the broken mixed sample evenly, spread the stirred mixed sample on a piece of clean white paper; the flattened shape is a regular rectangle;

[0034] (3) Randomly sample from the samples on the white paper; that is, random sampling is sampling using the five-point method, one sample is taken at the center point, four samples are taken at the same distance from the center point, and then the obtained samples are Mixed into a sample, proceed to the next step;

[0035] (4) Put the sample into the thermogravimetric analyzer, set the thermogravimetric test conditions, and perform thermogravimetric...

Embodiment 2

[0039] Asphalt content detection method, comprises the following steps:

[0040] (1) Crushing the retrieved asphalt and pavement mixed samples; wherein the particle diameter of the crushed asphalt and pavement mixed samples is less than 3 mm; the crushing method is dry crushing, direct grinding, and cannot be heated and the temperature of the sample cannot be too high;

[0041] (2), stir the broken mixed sample evenly, spread the stirred mixed sample on a piece of clean white paper; the flattened shape is a regular square;

[0042] (3) Randomly sample from the samples on the white paper; that is, random sampling is sampling using the five-point method, one sample is taken at the center point, four samples are taken at the same distance from the center point, and then the obtained samples are Mixed into a sample, proceed to the next step;

[0043] (4) Put the sample into the thermogravimetric analyzer, set the thermogravimetric test conditions, and perform thermogravimetric an...

Embodiment 3

[0047] Asphalt content detection method, comprises the following steps:

[0048] (1) Crushing the retrieved asphalt and pavement mixed samples; wherein the particle diameter of the crushed asphalt and pavement mixed samples is less than 3 mm; the crushing method is dry crushing, direct grinding, and cannot be heated and the temperature of the sample cannot be too high;

[0049] (2), stir the broken mixed sample evenly, spread the stirred mixed sample on a piece of clean white paper; the flattened shape is a regular rectangle;

[0050] (3) Randomly sample from the samples on the white paper; that is, random sampling is sampling using the five-point method, one sample is taken at the center point, four samples are taken at the same distance from the center point, and then the obtained samples are Mixed into a sample, proceed to the next step;

[0051] (4) Put the sample into the thermogravimetric analyzer, set the thermogravimetric test conditions, and perform thermogravimetric a...

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Abstract

The invention relates to the technical field of asphalt highway detection, in particular to an asphalt content detection method. The method comprises the following steps of: crushing a taken asphalt and pavement mixed sample; uniformly stirring the crushed mixed sample, and paving the stirred mixed sample on a piece of clean white paper; randomly sampling the sample on the white paper; putting the sample into a thermogravimetric analyzer, setting thermogravimetric test conditions, and carrying out thermogravimetric analysis; and automatically analyzing a thermal weight loss curve by an instrument to obtain the asphalt content. The problems that an existing indoor rapid asphalt content detection method is high in pertinence and high in limitation are solved, a thermogravimetric analysis method is used, the heating rate can be controlled through a program, real-time weighing is achieved, a balance used for weighing is high in sensitivity and precise in measurement, the change relation between mass and temperature is researched in real time, and the method is not limited to samples of special types. Therefore, in the rapid asphalt content detection technology, the coverage is wider, the universality is higher, and the analysis on the asphalt content of highways with unknown asphalt types is effective.

Description

technical field [0001] The invention relates to the technical field of asphalt road detection, in particular to a method for detecting asphalt content. Background technique [0002] The development of highway asphalt pavement makes the paved pavement not only have a certain bearing capacity, but also have good durability against natural factors. Pavement asphalt content is one of the important factors affecting pavement structure and disease degree. In order to ensure the quality of the asphalt pavement during the re-construction process, it is necessary to regularly test the asphalt content of the pavement. The "Code for Design of Highway Asphalt Pavement" (JTG D50-2017) recommends the use of methods such as core sampling and laboratory experiments to analyze the pavement interlayer structure and disease degree. At present, in China, core sampling, centrifugal separation or combustion furnace method are usually used to analyze and test the content of asphalt. In order to...

Claims

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Application Information

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IPC IPC(8): G01N25/20G01N5/00G01N5/04
CPCG01N25/20G01N5/00G01N5/04
Inventor 严刚刘国强王彬张庆明谭敏李云付白龙飞唐强
Owner CHONGQING COMM CONSTR GRP
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