Nondestructive detection method for congestion state of permeable asphalt pavement

A permeable asphalt, non-destructive testing technology, applied in the direction of material inspection products, test sample preparation, instruments, etc., can solve the problems of road surface damage, complex operation, test result distortion, etc., to achieve short time consumption, accurate measurement, and easy operation Effect

CN111537613APending Publication Date: 2020-08-14JILIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-08-14

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Abstract

The invention belongs to the technical field of permeable pavement congestion detection, and particularly relates to a nondestructive detection method for the congestion state of a permeable asphalt pavement. The pavement noise growth rate is calculated by standardly testing the pavement noise value of the initial permeable asphalt pavement and the permeable asphalt pavement put into use for a period of time; if the pavement noise growth rate is larger than or equal to 5.5%, it can be judged that the pavement congestion degree is serious, and cleaning and maintenance need to be conducted; therelation between the pavement noise of the permeable asphalt pavement and the pavement gap state is used for detecting the permeable pavement gap congestion state. Implementation is easy and convenient, the pavement is not damaged, and the congestion degree of the permeable asphalt pavement can be accurately detected.
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Description

Technical field

[0001] The invention belongs to the technical field of permeable pavement silt detection, and in particular relates to a non-destructive detection method for the silt state of permeable asphalt pavement. Background technique

[0002] After the permeable pavement is open for traffic for a period of time, due to road surface sediments, road damages, etc. entering the pavement voids, different degrees of siltation will occur, resulting in the loss of drainage and water storage capacity of the pavement, and it becomes as impervious as ordinary roads. . In order to restore the water permeability of the blocked road surface, professional equipment and professional methods are required to maintain the road surface.

[0003] Among them, in the process of clearance and maintenance of the permeable asphalt pavement, the detection of the blockage of the pavement gap is involved.

[0004] At present, the commonly used methods to detect the degree of siltation of permeable aspha...

Examples

Embodiment Construction

[0018] The principle of the method of the present invention is: the noise reduction effect of the permeable asphalt pavement is obvious. For the same pavement and the same test conditions, the main influencing factors of the noise level of the pavement are the void ratio and void shape, and the void ratio is the fundamental factor affecting the water permeability of the pavement. the reason. Based on this, the following tests are made:

[0019] Step 1: Carry out the indoor Marshall specimen silting simulation test to explore the changes in the quality, porosity and water permeability of the Marshall specimen when the water permeability is basically lost, and judge various indicators when the permeable asphalt pavement is seriously blocked;

[0020] (1) Three Marshall test pieces are formed:

[0021] Each Marshall test piece is mixed with SBS high-viscosity modified asphalt and alkaline limestone that meets the screening requirements at a ratio of 4.8% to stone, and is formed by doub...