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Method for analyzing THFS-modified-asphalt temperature sensing performance based on CAM model

A technology of modified asphalt and model analysis, which is used in the analysis of materials, flow characteristics, and the use of stable shear force to test the strength of materials, etc., to achieve the effect of improving the utilization value.

Inactive Publication Date: 2019-01-04
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Application Information

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Problems solved by technology

[0010] It can be seen that most researchers use conventional indicators such as PI, PVN, VTS, GTS, and STS to study the temperature-sensing properties of different asphalt materials. Temperature-sensing properties, researchers have not yet involved

Method used

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  • Method for analyzing THFS-modified-asphalt temperature sensing performance based on CAM model
  • Method for analyzing THFS-modified-asphalt temperature sensing performance based on CAM model
  • Method for analyzing THFS-modified-asphalt temperature sensing performance based on CAM model

Examples

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Embodiment 1

[0102] In this example, the SK-90 base asphalt imported from South Korea was selected, and the relevant performance tests were carried out on the SK-90 base asphalt according to the relevant regulations in the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011). The test results are shown in the table 1.

[0103]

[0104] Table 1

[0105] Table 1: Properties of SK-90 (Tab.1 Physical Properties of SK-90).

[0106] It can be seen from Table 1 that the properties of the SK-90 base asphalt used in this example meet the relevant technical requirements in the "Technical Specifications for Construction of Highway Asphalt Pavement" (JTG F40-2004).

[0107] The DCLR selected in this example is a by-product produced by Baotou Coal Chemical Branch of China Shenhua Coal-to-Liquid Chemical Co., Ltd. in the direct coal liquefaction process, and its appearance is black powder. The performance of the DCLR was tested according to the relevant regulati...

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Abstract

The invention relates to a method for analyzing the THFS-modified-asphalt temperature sensing performance based on a CAM model. The method includes the following steps that 1) all performances of matrix asphalt and DCLR are tested; 2) through a soxhlet extractor, THF serves as an extracting solvent, the DCLR is extracted; 3) the THFS extracted from the DCLR serves as a modifying agent, and THFS modified asphalt is prepared; 4) the THFS modified asphalt with different mixing amounts at the different test temperatures is subjected to frequency scanning analysis through a dynamic shear rheometer;5) according to the time temperature equivalence principle, trial curves at the different test temperatures transversely move, and modulus master curves at some specific temperature are synthesized;6) multiple modulus G* master curves of the modified asphalt under the different THFS mixing amounts are subjected to fitting calculation based on the CAM model, and the temperature sensing characteristic of the THFS modified asphalt is evaluated through physical parameters in the CAM model; 7) the influence rules of the different THFS mixing amounts on the modified-asphalt temperature sensing performance are analyzed.

Description

technical field [0001] The invention belongs to the technical field of preparation of road construction materials, and relates to an evaluation method for the temperature-sensing performance of asphalt, in particular to a method for analyzing the temperature-sensing performance of THFS modified asphalt based on a CAM model. Background technique [0002] In recent years, smog has occurred frequently in many places in my country, and the burning of coal is one of the main culprits of smog. Therefore, it is of great significance to realize the clean and efficient use of coal and build a clean, low-carbon, safe and efficient modern energy system. Coal liquefaction technology is one of the effective means to achieve clean and efficient utilization of coal. It converts solid coal into liquid fuels, chemical raw materials and products through chemical reaction processes. It is an advanced clean coal technology, including direct liquefaction and indirect liquefaction. craft. Direct...

Claims

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Application Information

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IPC IPC(8): G01N11/00G01N3/24
CPCG01N3/24G01N11/00
Inventor 季节许鹰李辉卢九章石越峰索智徐世法
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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