CN2615668Y - Air-filling pavement infiltration test instrument - Google Patents
Air-filling pavement infiltration test instrument Download PDFInfo
- Publication number
- CN2615668Y CN2615668Y CN 03251688 CN03251688U CN2615668Y CN 2615668 Y CN2615668 Y CN 2615668Y CN 03251688 CN03251688 CN 03251688 CN 03251688 U CN03251688 U CN 03251688U CN 2615668 Y CN2615668 Y CN 2615668Y
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- CN
- China
- Prior art keywords
- gas
- tyre
- water
- measuring device
- road surface
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- Expired - Fee Related
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Abstract
The utility model provides a gas-charged pavement seepage measuring device comprising a water seepage measuring device made of a measuring cylinder, a filter pulp tube and a gland bush. The water seepage measuring device is arranged on the core sample mold chamber. A gas-charged annular tyre is equipped in the core sample mold chamber. The road core sample can be placed on the middle portion of the tyre. The interspace between the side wall of the mould and the testing sample and the interspace between the side wall and the core piece can be blocked by elasticity of the tyre and expansibility formed after gas-charging of the tyre. Using elasticity of the tyre and expansibility formed after gas-charging of tyre to block the interspace between the side wall and the core piece avoids that water may return to road surface through the communicated interspace to affect test result. So the gas-charged pavement seepage measuring device can ensure whether road surface is leaky of water. The gas-charged pavement seepage measuring device can be used in water seepage test in the design with asphaltum and beton mixed with a mix ratio, and can be used in water seepage test of the sampling core piece of SMS road surface and in water seepage test of asphaltum road surface with dense suspending structure. The gas-charged pavement seepage measuring device is characterized in that it is simple to manipulate, the data is reliable, the fittings are easy to get, and the device is easy to maintain.
Description
Technical field:
The utility model is the improvement to existing road surface water test instrument, discloses a kind of inflatable road surface water test instrument, belongs to highway subgrade pavement detection equipment technical field.
Background technology:
According to the water penetration test method JTJ059-95 " highway subgrade road surface on-the-spot test rules " of routine (T0971-95), it is the infiltration coefficient that to measure SMA, its reason is the SMA rough surface, the edge is difficult to seal with encapsulant, water may return on the road surface from the space that is communicated with, do not penetrate in the structural sheet at all, therefore, can't confirm whether the road surface seeps water.
Existing infiltration instrument can not be measured SMA road surface infiltration coefficient, because water passes through from the edge connected component, can't obtain accurate test findings, also can't measure simultaneously the infiltration coefficient that hits real test specimen in the infiltration coefficient of getting the core test specimen and the measuring cell.
Summary of the invention:
The utility model discloses a kind of inflatable road surface water test instrument, has solved existing infiltration instrument and has measured inaccurate problem.
Technical solution of the present utility model is as follows: constitute the infiltration measuring mechanism by graduated cylinder, soakaway trench, base, and device is on core sample mould chamber, it is characterized in that: be provided with inflatable ring-type tire in the core sample mould chamber, the road core can be placed on the middle part of tire, utilize the bulging force that forms after the elasticity of tire and the inflation to seal space between mould chamber sidewall and the test specimen, prevent that current from flowing out from sidewall, influences testing result.
For the sealing effectiveness between fortified tyre and the core sample mould chamber, the core sample mould chamber inwall also is provided with groove, can make tire and core sample mould chamber become the face contact by contacting, and has strengthened tightness greatly.
The utility model in use, coat vaseline and put into pneumatic tyre cleaning out around the road core test specimen, give inflation of tire, make tire closely contact cover lid with test specimen and mould chamber outer wall, put O-ring seal after the inversion (if it is too low to get core test specimen height, add the altimetric compensation piece), the water penetration test instrument base that combines is pressed and fix, close the valve of soakaway trench, inject water, total amount is 600 milliliters; Rapidly valve is all opened, water begins to flow out from the soakaway trench bottom, when treating that the underwater is reduced to 100 milliliters, starts stopwatch immediately, every interval 60 seconds, the record scale once, till the water surface descends 500 milliliters the time.In the test process, if water oozes out, illustrate that the sealing of base and road surface is bad between base and encapsulant, dry pavement goes out operation again near should moving to, and very slow if the water surface descends, since 100 milliliters, the water percolating capacity of measuring 3 minutes can stop; To a certain degree the back is basic keeps motionless if the underwater drops to, and illustrates that the road surface is waterproof substantially or not permeable.
Good effect of the present utility model is: utilize the bulging force that forms after the elasticity of tire and the inflation to seal space between mould side wall and the chipware, avoided water to return on the road surface from the space that is communicated with, influence test findings, whether seep water on the affirmation road surface.This testing tool is measured infiltration coefficient with succinct, reliable method to the core test specimen of getting on SMA road surface, has solved a focus difficult point problem in the highway engineering practice.This instrument carries out water penetration test when being used in the mixture ratio of asphalt concrete design; Also can get the core test specimen to the SMA road surface carries out water penetration test and the bituminous pavement of closely knit suspension structure is carried out water penetration test.Easy and simple to handle, data are reliable, and accessory is easy to get, and are convenient to maintenance.
Description of drawings:
Fig. 1 is the utility model structure principle chart.
Embodiment:
According to shown in Figure 1, core sample mould chamber 5 middle parts are provided with inflatable ring-type tire 6, can inflate it by valve inside 8, the bottom of core sample mould chamber 5 is provided with observation panel 7, top is gland 4, gland 4 be provided with soakaway trench 2, can communicate the graduated cylinder 1 of another termination measuring mechanism of soakaway trench 2 with mould chamber 5, device has valve 10 on the soakaway trench 2,1 infiltration of control graduated cylinder also is provided with bolt latch mechanism 9 on the core mould 5, measuring mechanism closely can be connected with core sample mould chamber 5, on the inwall of core sample mould chamber 5, also be provided with wide 15mm, the groove of dark 1mm is provided with O-ring seal 3 between gland 4 and the core sample mould chamber 5, has strengthened the tightness of mould chamber greatly.
Claims (2)
1, a kind of inflatable road surface water test instrument, constitute the infiltration measuring mechanism by graduated cylinder, soakaway trench, gland, and device is on core sample mould chamber, it is characterized in that: be provided with inflatable ring-type tire in the core sample mould chamber, the road core can be placed on the middle part of tire, utilizes the bulging force that forms after the elasticity of tire and the inflation to seal space between mould side wall and the test specimen.
2, the described tester of claim 1, it is characterized in that: the core sample mould chamber inwall is provided with annular recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03251688 CN2615668Y (en) | 2003-05-28 | 2003-05-28 | Air-filling pavement infiltration test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03251688 CN2615668Y (en) | 2003-05-28 | 2003-05-28 | Air-filling pavement infiltration test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2615668Y true CN2615668Y (en) | 2004-05-12 |
Family
ID=34253284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03251688 Expired - Fee Related CN2615668Y (en) | 2003-05-28 | 2003-05-28 | Air-filling pavement infiltration test instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2615668Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519860A (en) * | 2012-01-04 | 2012-06-27 | 中水东北勘测设计研究有限责任公司 | Impermeability test method for asphalt concrete with impermeable function |
| CN102645524A (en) * | 2012-04-20 | 2012-08-22 | 中国农业大学 | Soil water evaporation simulation device |
| CN103091224A (en) * | 2013-01-11 | 2013-05-08 | 浙江驰成建设有限公司 | Water permeable rate test method for water-permeable concrete pavement |
| CN103091223A (en) * | 2013-01-11 | 2013-05-08 | 浙江驰成建设有限公司 | Water permeable rate test device |
| CN107462505A (en) * | 2017-07-03 | 2017-12-12 | 宁波工程学院 | A kind of test device and method of testing for being used to test porous pavement coefficient of permeability |
-
2003
- 2003-05-28 CN CN 03251688 patent/CN2615668Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519860A (en) * | 2012-01-04 | 2012-06-27 | 中水东北勘测设计研究有限责任公司 | Impermeability test method for asphalt concrete with impermeable function |
| CN102645524A (en) * | 2012-04-20 | 2012-08-22 | 中国农业大学 | Soil water evaporation simulation device |
| CN102645524B (en) * | 2012-04-20 | 2015-06-03 | 中国农业大学 | Soil water evaporation simulation device |
| CN103091224A (en) * | 2013-01-11 | 2013-05-08 | 浙江驰成建设有限公司 | Water permeable rate test method for water-permeable concrete pavement |
| CN103091223A (en) * | 2013-01-11 | 2013-05-08 | 浙江驰成建设有限公司 | Water permeable rate test device |
| CN107462505A (en) * | 2017-07-03 | 2017-12-12 | 宁波工程学院 | A kind of test device and method of testing for being used to test porous pavement coefficient of permeability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |