Method for evaluating automobile exhaust degradation efficiency of semi-flexible pavement

A technology for semi-flexible pavement and automobile exhaust, which is applied in the analysis of gas mixtures, measuring devices, instruments, etc., can solve the problems of unintuitive test results, long exhaust gas test period, long test period, etc., and achieves low cost and strong anti-interference ability. , the effect of quick evaluation

Inactive Publication Date: 2017-11-17
NANJING FORESTRY UNIV
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Problems solved by technology

[0010] The purpose of the present invention is to provide an evaluation method for the efficiency of degrading automobile exhaust on semi-flexible pavements, which solves the problem of long test period, high cost, unintuitive test results, and difficulty in real-time and reliable direct presentation of light under different lighting conditions. The problem of ca

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  • Method for evaluating automobile exhaust degradation efficiency of semi-flexible pavement

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Embodiment Construction

[0018] The invention provides a method for evaluating the efficiency of degrading automobile exhaust on a semi-flexible road surface, and the specific implementation steps are as follows:

[0019] (1) Determine the gradation of the porous asphalt mixture skeleton of AC-13 gradation in the semi-flexible pavement structure and the amount of modified asphalt according to the aggregate screening results, and prepare asphalt with a porosity of 25% to 35% by rolling molding method Mixture rut plate specimens, stand at room temperature for 24 hours;

[0020] (2) Water, cement, photocatalyst TiO 2 The powder is added to the mixer for stirring, and the TiO-containing 2 Control the fluidity of the cement mortar for 9 to 11 seconds, pour the porous asphalt mixture rut plate, remove the excess cement mortar on the surface, expose the porous asphalt mixture, and keep it healthy for 7 days;

[0021] (3) Turn on the main engine of the automobile exhaust gas analyzer and debug it before the...

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Abstract

The invention is an evaluation method for the efficiency of degrading automobile exhaust on semi-flexible pavement, which belongs to the technical field of functional pavement, and solves the problem of long test period, high cost, unintuitive, difficult real-time and direct presentation of photocatalyst degradation for the evaluation of semi-flexible pavement degrading automobile exhaust. The question of effect. The present invention firstly prepares the asphalt mixture rutting slab test piece with a porosity of 25% to 35% and the cement mortar containing TiO2, pours the porous asphalt mixture rutting slab, and removes excess cement mortar on the surface; puts the test piece in the test room , start the gasoline engine, and press the test button of the automobile exhaust analyzer at the same time to monitor the concentration change of the automobile exhaust gas; when the concentration of each component of the exhaust gas reaches the predetermined initial concentration range, record the initial concentration of each component of the exhaust gas, turn on different light sources respectively, and record the components of the exhaust gas The concentration value was observed continuously for 2 hours, and the test results were analyzed to quickly and intuitively evaluate the degradation effect of semi-flexible pavement on automobile exhaust, providing a reliable evaluation method for the development of high-efficiency photocatalytic pavement.

Description

technical field [0001] The invention relates to an evaluation method for the efficiency of degrading automobile exhaust on a semi-flexible pavement, which belongs to the technical field of functional pavements. Background technique [0002] With the improvement of my country's urbanization level and the development of three-dimensional transportation, the total mileage of my country's urban roads has reached 400,000 kilometers, with a total area of ​​7.5 billion square meters. Because urban roads are affected by buildings along the street, the air flow is relatively poor, and the exhaust gas emitted by automobiles is difficult to circulate in a short period of time, and accumulates on the surface and upper space of urban roads, resulting in significantly high concentrations of automobile exhaust, high levels of toxic and harmful substances, and serious pollution environment and endanger the health of residents. Therefore, it is increasingly urgent to study new technologies ...

Claims

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Application Information

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IPC IPC(8): G01N33/00
CPCG01N33/0004
Inventor 许涛陈文华时爽黄凯健
Owner NANJING FORESTRY UNIV
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