Rapid detection method for SBS modified asphalt modifier contents

A technology of modified asphalt and detection methods, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of complicated sample preparation, large equipment volume, inconvenient to carry, etc., achieve accurate measurement results, meet the measurement requirements, and cover a wide range Effect

Active Publication Date: 2016-03-02
内蒙古自治区交通运输科学发展研究院 +3
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Problems solved by technology

The following introduces some existing related technologies, but they all have their own defects: In order to test the SBS content, Diefender proposes a method of using elastic recovery as the characterization index of SBS content, and inferring the SBS content by establishing the elastic recovery-SBS content relationship curve
Due to the large number of asphalt and SBS grades, there are differences in the infrared spectra of different grades of asphalt and SBS. Therefore, the working curve established by using a certain grade will produce deviations when detecting the SBS content of other grades.
In general, the SBS grade in unknown samples is unknown, which will lead to detection bias
Therefore, the above-mentioned technology is only limited to the situation that the on-site SBS modifier and the base asphalt for modification are both known modified asphalt on-site processing. Base asphalt, will produce detection bias
[0004] All in all, the infrared spectroscopic test method is the method of testing the content of SBS modified asphalt modifier with the least interference factors, but the traditional infrared spectroscopic test method still has complex sample preparation, large equipment volume, and inconvenient portability. Quantitative analysis and other issues

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  • Rapid detection method for SBS modified asphalt modifier contents

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Embodiment 1

[0039] A) the comparison SBS modified asphalt sample is composed of a calibration set and the infrared spectrum data of the contrast SBS modified asphalt sample is collected;

[0040] Among them, different qualities of SBS (the product of LG501 produced by South Korea’s LG Chemical) were added to the base asphalt (the product of Shell AH-90 produced by Shell China), and 12 samples with evenly distributed SBS content were prepared. The SBS content of the SBS modified asphalt samples were 3.0%, 3.3%, 3.6%, 3.9%, 4.0%, 4.2%, 4.5%, 4.7%, 5.0%, 5.3%, 5.7%, 6.0%. Select 10 of them as the calibration set samples (i.e., select 10 of them as the reference SBS modified asphalt samples to form the calibration set), and measure the attenuated total reflection infrared spectra of these control modified asphalt samples respectively (i.e., use the attenuated total reflection method Determination of the infrared spectrum data of these contrast SBS modified asphalt samples), wherein the corres...

Embodiment 2

[0050] A) the comparison SBS modified asphalt sample is composed of a calibration set and the infrared spectrum data of the contrast SBS modified asphalt sample is collected;

[0051] Among them, different qualities of SBS (the product of LG411 produced by Korean LG Chemical) were added to the base asphalt (the product of SKAH-90 produced by SK of South Korea), and 12 SBS with uniform distribution of SBS content were prepared. Modified asphalt samples, the SBS content were 3.0%, 3.3%, 3.6%, 3.9%, 4.0%, 4.2%, 4.5%, 4.7%, 5.0%, 5.4%, 5.7%, 6.0%. Select 10 of them as the calibration set samples (i.e., select 10 of them as the reference SBS modified asphalt samples to form the calibration set), and measure the attenuated total reflection infrared spectra of these control modified asphalt samples respectively (i.e., use the attenuated total reflection method Determination of the infrared spectrum data of these contrast SBS modified asphalt samples), wherein the corresponding SBS co...

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Abstract

The invention relates to a rapid detection method for SBS modified asphalt modifier contents. The method comprises the steps that comparison SBS modified asphalt samples are constituted into a calibration set, and infrared spectroscopy data of the comparison SBS modified asphalt samples are collected; SBS content data in the comparison SBS modified asphalt samples and the infrared spectroscopy data of the comparison SBS modified asphalt samples are subjected to regression analysis with a chemometrics method, and a multivariate calibration model of the SBS contents in the comparison SBS modified asphalt samples is built; the SBS contents in to-be-tested SBS modified asphalt samples are obtained by combining the infrared spectroscopy data of the to-be-tested SBS modified asphalt samples and the multivariate calibration model, the rapid detection method for the SBS modified asphalt modifier contents can be applied in site quality control and supervision work for SBS modified asphalt of quality supervision institutions and project construction units, and asphalt pavement construction quality control work can be effectively instructed.

Description

technical field [0001] The invention relates to the field of SBS content detection, in particular to a rapid detection method for SBS modified asphalt modifier content. Background technique [0002] SBS modified asphalt is a blend of base asphalt and polymer modifier SBS (Styrene-butadiene-styreneblockcopolymer, styrene-butadiene block polymer), the content of SBS is an important factor determining the road performance of SBS modified asphalt one of the factors. The following introduces some existing related technologies, but they all have their own defects: In order to test the SBS content, Diefender proposed a method of using elastic recovery as a characterization index of SBS content, and inferring the SBS content by establishing an elastic recovery-SBS content relationship curve. However, the SBS content is not the only factor that determines the elastic recovery. Factors such as the preparation method of SBS modified asphalt, phase structure, additives and other factor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563
CPCG01N21/3563
Inventor 张洪伟魏道新张勇陈景赵蔚袁洪福朱宝林李喆刘振正宋春风郭朝阳李亚非李吉平王拥己
Owner 内蒙古自治区交通运输科学发展研究院
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