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Asphalt and asphalt modified additive detection method

A technology of asphalt modification and detection method, which is applied in the field of detection, can solve difficult problems and achieve the effects of fast detection speed, high reliability of results, and simple operation

Active Publication Date: 2019-07-05
CHINA ACAD OF TRANSPORTATION SCI +2
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Problems solved by technology

After the test section of the new material is paved, the construction unit seldom actively uses it in order to ensure the quality of the project. Therefore, it is very difficult to further promote the application of these new materials

Method used

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  • Asphalt and asphalt modified additive detection method
  • Asphalt and asphalt modified additive detection method

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Embodiment Construction

[0015] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0016] refer to figure 1 , a method for detecting bitumen and bitumen modified additives according to the present invention, the method includes the steps of: scanning step S1: scanning and collecting the infrared spectrum of the bitumen sample and / or the bitumen modified additive sample. Specifically, the infrared spectrum of qualified samples can be collected by the HF-03 asphalt rapid analysis instrument produced by CPT (Beijing) Technology Co., Ltd. Set the parameters to the wavelength range of 650 ~ 4000cm -1 , resolution 4cm -1 , the number of scans is 32 times. After turning on the instrument and warming up for 30 minutes, take the measurement. First, clean the crystal surface of the instrument with a cotton swab, and collect the background; then apply the asphalt sample evenly to the crystal surface, and the sample needs to cover an...

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Abstract

The invention discloses an asphalt and asphalt modified additive detection method. The method includes the following steps of: scanning step; model library establishing step; recommendation thresholdvalue generating step: a first-order interactive verification method is adopted to calculate a recommendation threshold value in each sample model library; to-be-detected sample scanning step: infrared spectrum scanning is performed on a to-be-detected asphalt sample and / or asphalt modified additive sample; comparison step: a sample model library is selected, a spatial included angle formed between the infrared spectrum of the to-be-detected sample and the selected sample model library is calculated and is compared with the recommendation threshold value in the selected sample model library; and judgment step: the to-be-detected asphalt sample and / or asphalt modified additive sample is qualified is confirmed as a qualified product if the spatial included angle is smaller than the recommendation threshold value. The detection method of the invention has the advantages of high detection speed, high result reliability, simplicity in operation and the like.

Description

technical field [0001] The invention relates to a detection method, in particular to a detection method of highway engineering asphalt and asphalt modification additives. Background technique [0002] Asphalt and asphalt modified additives in highway engineering are petroleum by-products or petrochemical mixtures, which have complex chemical components, cumbersome testing and evaluation procedures, long testing cycles, and difficult evaluation of new products, which makes it difficult to carry out quality control work on site for these materials. Raw materials The effectiveness and engineering quality guarantee are poor. Taking asphalt as an example, asphalt is a deep-processing product of crude oil residue, and its chemical composition is complex. According to the existing "Technical Specifications for Construction of Highway Asphalt Pavement", the evaluation of all performance indicators involves 14 testing items, and the evaluation period is not less than 5 days. There a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/35
CPCG01N21/35Y02A30/30
Inventor 赵蔚袁洪福张洪伟魏道新陈景郭朝阳李喆陈千婷
Owner CHINA ACAD OF TRANSPORTATION SCI
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