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Asphalt mixture pressure type permeameter and method for measuring permeability

A technology for asphalt mixture and permeability performance, which is applied in permeability/surface area analysis, measuring devices, scientific instruments, etc., can solve the problems of long time, large deviation of test results of asphalt mixture water permeability meter, and poor reproducibility, etc., and achieves the test time. The effect of shortening, short working cycle and small test volume

Inactive Publication Date: 2014-06-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The technical problem to be solved by the present invention is to overcome the defects of large deviation, time-consuming and poor reproducibility of the test results of the above-mentioned asphalt mixture water seepage meter, and provide a kind of asphalt mixture air pressure type seepage meter with short test time, high test efficiency and water saving

Method used

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  • Asphalt mixture pressure type permeameter and method for measuring permeability
  • Asphalt mixture pressure type permeameter and method for measuring permeability
  • Asphalt mixture pressure type permeameter and method for measuring permeability

Examples

Experimental program
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Effect test

Embodiment 1

[0047] see figure 1 , the asphalt mixture air pressure type permeation instrument of the present invention is composed of an inflator 1, an electromagnetic inlet valve 2, a pressure sensor 3, a controller 4, a timing device 5, an electromagnetic outlet valve 6, a conduit 7, a counterweight 8, a sealing cover 9. The air storage bag 10 is connected and formed.

[0048]An electromagnetic intake valve 2 is arranged at the air intake end of the air storage bag 10, and the air storage bag 10 communicates with the inflator 1 through the conduit 7. The inflator 1 of the present embodiment selects an air compressor to compress the air and output it to the air storage bag 10. An electromagnetic outlet valve 6 is arranged at the air outlet end of the air storage bag 10, and communicates with the top of the sealing cover 9 through the conduit 7. The vertical section of the sealing cover 9 is arc-shaped, and the whole is in the shape of a spherical crown. The sealing cover 9 is arranged o...

Embodiment 2

[0059] The asphalt mixture air pressure type permeameter in this embodiment is composed of an inflator 1, an electromagnetic inlet valve 2, a pressure sensor 3, a controller 4, a timing device 5, an electromagnetic outlet valve 6, a conduit 7, a counterweight 8, a sealing The cover 9 and the air storage bag 10 are connected to form.

[0060] The timing device 5 of the present embodiment adopts a stopwatch and is manually controlled. Other components and the coupling relationship of the components are the same as in Embodiment 1. The working principle of this embodiment and the testing method of the permeability of asphalt mixture are the same as those of Embodiment 1.

[0061] In order to verify the beneficial effect of the present invention, the inventor has adopted the asphalt mixture air pressure type permeameter prepared in Example 1 of the present invention and the asphalt mixture permeability test method and the water seepage detection method in the prior art to carry o...

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Abstract

An asphalt mixture pressure type permeameter comprises a controller air storage sac, wherein the air inlet end of the air storage sac is communicated with an air-filling device through an electromagnetic air inlet valve which is installed on a guide pipe, the air outlet end of the air storage sac is communicated with a sealing cover through an electromagnetic air outlet valve which is installed on the guide pipe, the electromagnetic air inlet valve and the electromagnetic air outlet valve are connected with a controller through leads, and a pressure sensor which is connected with the controller through the lead is arranged on the side wall of the air storage sac. The asphalt mixture pressure type permeameter further comprises a timing device and a counter weight which is arranged on the edge of the sealing cover. Air is taken as medium, the controller controls the air inlet valve and the air outlet valve of the air storage sac, so the compressed air passes by an asphalt mixture test piece which is linked with the sealing cover, the pressure sensor sends the pressure signal to the controller, the controller converts the pressure signal into time signal, the timing device displays the time for reducing the air storage sac from one fixing air pressure to another fixing air pressure, so the permeability of the test piece is measured, the test time is greatly shortened, the efficiency is high, and water resources are saved.

Description

technical field [0001] The invention relates to an air-based asphalt pavement permeameter and a test method for permeation performance. Background technique [0002] The water permeability of the asphalt mixture has an important influence on the durability of the asphalt pavement, and the early damage of the pavement is quite serious due to the water seepage of the asphalt pavement. When the asphalt pavement is covered with water, water enters the interior of the asphalt mixture through the interconnected void ratio of the asphalt mixture. Under the action of external vehicle loads, the asphalt film gradually peels off from the surface of the aggregate, resulting in loose asphalt pavement, spalling, pits, etc. The damage phenomenon, even the failure caused by water infiltration from the asphalt mixture to the base layer, which causes the bearing capacity of the base layer to decrease, accounts for a considerable proportion of early failures. [0003] At present, it is more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
Inventor 郝培文蒋锦毅苏东兰
Owner CHANGAN UNIV
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