Device and method for evaluating automobile exhaust degradation effect of OGFC mixture

A technology of automobile exhaust and evaluation device, which is applied in the direction of chemical analysis by means of catalysis, and can solve the problems that open-graded anti-skid wear layers cannot be applied, and achieve the effect of simple structure and convenient operation

Inactive Publication Date: 2015-07-29
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this evaluation method and test equipment are only suitable for evaluating the degradation effect

Method used

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  • Device and method for evaluating automobile exhaust degradation effect of OGFC mixture
  • Device and method for evaluating automobile exhaust degradation effect of OGFC mixture
  • Device and method for evaluating automobile exhaust degradation effect of OGFC mixture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Indoor hot-mix OGFC-16 asphalt mixture, the asphalt used is high-viscosity modified asphalt, the void ratio of the mixture is 21%, and the mineral aggregate gradation of OGFC-16 mixture is shown in Table 1.

[0065] Table 1 Mineral gradation of OGFC-16 mixture

[0066]

[0067] Under the above gradation, the optimal asphalt ratio of OGFC asphalt mixture is 4.1% through Schellenberg leak test and Kentburg fly test. The road performance of the designed mixture was verified, and after meeting the specification requirements, the rutting plate specimen of the nano-titanium dioxide asphalt mixture was formed, and the evaluation test of the OGFC mixture on the degradation effect of automobile exhaust was carried out.

[0068] Such as figure 1 Shown, according to an embodiment of the evaluation device of the OGFC mixture of the present invention to the automobile exhaust degradation effect, comprise airtight container 1, automobile engine 2, automobile exhaust analyzer 3 an...

Embodiment 2

[0103] According to the evaluation device of the OGFC mixture of the present invention to the degradation effect of automobile exhaust, its structure, connection relationship between each part, working principle and beneficial effect etc. are identical with embodiment one, difference is: three ultraviolet lamp tubes are set, Set a larger lampshade above the three lamp tubes; the vertical distance between the rut plate test piece and the ultraviolet lamp tube is 200mm; the sampling air pipe length of the automobile exhaust gas analyzer is 100mm; the air supply device is four fans, evenly arranged in an airtight container. Using the evaluation method of the evaluation device of this embodiment, its process and steps are the same as in Embodiment 1, the difference is: the TiO 2 Add it into the OGFC mixture, stir for 40s; degradation simulation step (3), close the intake valve, open the control valve and exhaust valve, then start the car engine, and discharge the car exhaust, the ...

Embodiment 3

[0105] According to the evaluation device of the OGFC mixture of the present invention to the degradation effect of automobile exhaust, its structure, connection relationship between each part, working principle and beneficial effect etc. are the same as embodiment one, and the difference is: five ultraviolet lamp tubes are set, Set a larger lampshade above the five lamp tubes; the vertical distance between the rut plate test piece and the ultraviolet lamp tube is 300mm; the sampling air pipe length of the automobile exhaust gas analyzer is 500mm; the air supply device is four fans, evenly arranged in an airtight container. Using the evaluation method of the evaluation device of this embodiment, its process and steps are the same as in Embodiment 1, the difference is: the TiO 2 Add it into the OGFC mixture, stir for 20s; degradation simulation step (3), close the intake valve, open the control valve and exhaust valve, then start the car engine, and discharge the car exhaust, t...

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Abstract

The invention discloses a device for evaluating the automobile exhaust degradation effect of an OGFC mixture. The device comprises a closed container, an automobile engine, an automobile exhaust analyzer, a track board test piece, and air supplying devices, wherein the air supplying devices are arranged in the closed container. The invention further discloses an evaluation method which comprises the following steps in sequence: preparing the track board test piece, and generating automobile exhaust; simulating the degradation of automobile exhaust on a pavement and testing the concentration of each gas in the automobile exhaust; processing data. The track board test piece is prepared from the OGFC mixture which is added with a photocatalytic material; the evaluation index, used for evaluating the automobile exhaust degradation effect, of the OGFC mixture is taken as the degradation rate. The evaluation device can simulate the automobile exhaust degradation processes of the OGFC mixture in different illumination conditions by controlling the number of ultraviolet lamp tubes. The evaluation method is accurate and reliable, and coincides with the automobile exhaust degradation situation on a real pavement.

Description

technical field [0001] The invention belongs to the technical field of road material engineering, and relates to an evaluation technology for the degradation effect of asphalt mixture on automobile exhaust, in particular to an evaluation device and evaluation method for the degradation effect of OGFC mixture on automobile exhaust. Background technique [0002] With the rapid development of the transportation industry, the application of motor vehicles has brought great convenience to people. However, the emission of automobile exhaust has seriously damaged the natural environment and ecological environment, and at the same time brought harm to human physical and mental health. Automobile exhaust contains carbon monoxide, carbon dioxide, hydrocarbons (HC), nitrogen oxides (mainly NO), etc. These substances are extremely harmful. In order to solve the serious problems caused by automobile exhaust emissions to the environment and human beings, people have launched research on a...

Claims

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Application Information

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IPC IPC(8): G01N31/10
Inventor 徐世法索智许鹰柳浩张涛汪京王晓晓
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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