Device and method for measuring water permeability coefficient of asphalt pavement

A technology for measuring device and water permeability coefficient, which is used in measuring device, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of gas can not be discharged, sealing can not be guaranteed, test failure, etc., to achieve a simple installation process Reliable, improve the success rate of measurement, the effect of smooth and sufficient exhaust

Active Publication Date: 2015-08-19
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The detection device cannot detect roads and bridges with large slopes
On the asphalt pavement with large longitudinal and transverse slopes, due to the existence of the slope, the water seepage meter is placed on the road surface in an inclined state, so that there is an angle between the water surface in the water measuring cylinder and the scale of the measuring cylinder, resulting in test errors
[0005] 2. The exhaust problem of the detection device
The exhaust function of the exhaust port is difficult to grasp. If the exhaust valve is tightened too tightly, the gas cannot be discharged and the test process cannot be carried out normally; If the exhaust valve is too loose, it is likely to cause the test water to overflow through the exhaust valve, and the test will fail.
[0006] 3. The sealing problem of the detection device
When the road surface is uneven, the leakproofness between the base of the water seepage meter and the road surface cannot be guaranteed, which will

Method used

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  • Device and method for measuring water permeability coefficient of asphalt pavement
  • Device and method for measuring water permeability coefficient of asphalt pavement
  • Device and method for measuring water permeability coefficient of asphalt pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] for image 3 with Figure 4 The structural form of the sealing leveling ring 4 shown, the measuring method of the asphalt pavement water seepage coefficient measuring device is to carry out as follows:

[0053] Step 1. On the test area of ​​the road surface, remove the dust in the road surface and the gaps of the road surface, and place the measuring device;

[0054] Step 2: Use ring-shaped sealing material to seal and smooth the road surface gap in the area corresponding to the rubber suction cup 412, use the rubber suction cup 413 to form a seal between the road surface and the base 7, and adjust the bolt 4a vertically so that the horizontal air bubbler 4b The air bubble is centered; during the adjustment process, first adjust the three vertical height adjustment bolts 4a to the minimum height, align the rubber suction cup 412 with the annular sealing material and press, and then use the air pump 414 to extract the air in the horn chamber 413 to detect After there i...

Embodiment 2

[0062] for Figure 5 with Image 6 The structural form of the sealing leveling ring 4 shown, the measuring method of the asphalt pavement water seepage coefficient measuring device is to carry out as follows:

[0063] Step 1. On the test area of ​​the road surface, remove the dust in the road surface and the gaps of the road surface, and place the measuring device;

[0064] Step 2. Adjust the vertical height adjustment bolt 4a so that the air bubbles in the horizontal bubbler 4b are centered, complete the leveling of the base 7, and use the up and down movable performance of the annular baffle 421 to make the bottom surface of the annular baffle 421 contact the road surface. At the local gap between the bottom surface of the annular baffle plate 421 and the road surface, use a sealing material to fill the gap; then turn on the power switch 424, and the solid wax in the wax tank 422 will melt after being heated and ooze out from the wax tank 422. Sealing is formed between the...

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Abstract

The invention discloses a device and a method for measuring the water permeability coefficient of an asphalt pavement. The device is characterized in that a measuring cylinder is vertically arranged in the center of the top of a base provided with a hollow cavity; a quick-opening valve is arranged at the bottom of the measuring cylinder; the measuring cylinder is communicated with the hollow cavity of the base by the opened quick-opening valve; four graduated exhaust pipes which have equal diameters are vertically and evenly distributed at the periphery of the measuring cylinder; the bottom ends of the exhaust pipes pass through the top surface of the base and are communicated with the hollow cavity of the base; the pipe orifices on the tops of the exhaust pipes are higher than the liquid level of the top of the measuring cylinder; the bottom of the base is provided with a sealing leveling ring which is sealed with the ground and is capable of adjusting the base to be horizontal. The device and the method are used for measuring a water permeating system of the asphalt pavement; after the device and the method are used, the test process is simplified, the test accuracy is improved, and the consistency of test data is guaranteed.

Description

technical field [0001] The invention relates to a pavement water seepage coefficient measuring device and a measuring method thereof, more specifically to an asphalt pavement water seepage coefficient measuring device and a measuring method. Background technique [0002] The pavement water seepage coefficient is one of the key technical indicators to measure the drainage performance of the road surface. The pavement water seepage coefficient is related to the traffic safety of the road surface in rainy days and the degree of road water damage. [0003] The pavement seepage measurement in the prior art has the following problems in the process of implementing according to the specifications: [0004] 1. The detection device cannot detect roads and bridges with large slopes. On the asphalt pavement with large longitudinal and transverse slopes, due to the existence of the slope, the water seepage meter is placed on the road surface in an inclined state, so that there is an an...

Claims

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Application Information

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IPC IPC(8): G01N15/08
Inventor 刘凯王子硕王芳张明伟黄智慧张楚领章治
Owner HEFEI UNIV OF TECH
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