CN209624309U - A kind of road section permeability performance measurement experimental rig - Google Patents
A kind of road section permeability performance measurement experimental rig Download PDFInfo
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- CN209624309U CN209624309U CN201920111447.4U CN201920111447U CN209624309U CN 209624309 U CN209624309 U CN 209624309U CN 201920111447 U CN201920111447 U CN 201920111447U CN 209624309 U CN209624309 U CN 209624309U
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Abstract
The utility model discloses a kind of road section permeability performances to measure experimental rig, belong to field of road, the technical problems to be solved in the utility model is the practical permeability performance for how effectively measuring road surface section or surface layer interlayer, effectively avoid damage to road surface section bonding, the technical solution of use are as follows: its structure includes support base and pedestal arranged in parallel, at least two long columns are provided between pedestal and support base, graduated cylinder is provided with above support base, core sample rack is provided with below support base, core sample rack is for placing road surface core sample, the upper end of core sample rack is connected with the lower end of graduated cylinder.
Description
Technical field
The utility model relates to field of road, specifically a kind of road section permeability performance measurement test dress
It sets.
Background technique
The water stability of asphalt is one of main pavement performance of asphalt, if arranging not in time after the water inlet of road surface
Out, flowing pressure is formed under the action of traffic load, dynamic water washes away repeatedly to gather materials and cementitious matter, causes cementitious matter to fall off, most
End form influences Pavement Performance, threatens traffic safety, while causing the loss of social economy at damages such as road surface pit slot, purt slurries.
Usually occur in practice, superficial layer is almost impermeable, but since section binding material spread is uneven or lower part
Road surface voidage is big, causes section adhesive layer position or section position voidage big, and at this moment moisture will not penetrate into road from superficial layer
Face, it will obtain position from median strip and bituminous pavement is entered by section or cross section place, destroy road surface section bonding, cause
Road surface loses globality, finally road surface is caused to destroy, therefore in pavement structure, section is the position for being easiest to seep water
Set, at present evaluate pavement seepage mainly superficial layer is evaluated, how to the road surface section or interlayer covered into
The measurement of row permeability performance is current technical problem urgently to be solved.
The patent document of Patent No. CN103698260A discloses a kind of new-old pavement binder course water permeability detection side
Method and detection device, the method includes obtaining old pavement core sample and dry indoors；The processing of core sample surface cleaning；In core sample
Upper surface is laid with binder course and forms detection test specimen；Detection test specimen is placed in detection device；Water on detection test specimen is imposed centainly
Air pressure, detection infiltration situation.Described device includes applying for top board, lower platen, connector, connecting tube, air valve and built-in water
Pressure vessel, pressure container and top board are tightly connected, and detection test specimen is placed between top board and lower platen, the connector connection
Upper and lower pressing plate, top board are tightly connected with the corresponding contact surface of detection test specimen, and the connecting tube is connected on pressure container and locates
Above the water level in pressure container, the air valve is arranged on adapter tube.The technical solution is for measuring new-old pavement binder course
Water permeability cannot effectively measure the practical permeability performance of road surface section or surface layer interlayer.
The patent document of Patent No. CN104849196A discloses a kind of bituminous pavement infiltration coefficient measurement device and survey
Determine method, graduated cylinder is set in upright in the center of top of the pedestal with hollow cavity, quck-opening valve, graduated cylinder are set in the bottom of graduated cylinder
It is connected to by the quck-opening valve of unlatching with the formation of the hollow cavity of pedestal；In the periphery of graduated cylinder, four etc. are directly evenly distributed with directly in vertical
Diameter exhaust pipe with a scale, the bottom end of each exhaust pipe are run through the top surface of pedestal and are connected to the formation of the hollow cavity of pedestal, exhaust pipe
Top nozzle be higher by the top liquid level height of graduated cylinder；Setting can form with ground and seal and can adjust bottom at the top of the base
Seat levels circle in horizontal sealing.The technical solution is to be directed to road surface, top-down a certain independent surface layer permeability performance,
The practical permeability performance of road surface section or surface layer interlayer cannot effectively be measured.
Summary of the invention
The technical assignment of the utility model is to provide a kind of road section permeability performance measurement experimental rig, come solve how
The effectively practical permeability performance of measurement road surface section or surface layer interlayer, effectively avoids moisture from passing through section from median strip position
Or section bedding void enters bituminous pavement, destroys road surface section bonding, causes road surface to lose globality, finally road surface is caused to send out
Raw the problem of destroying.
The technical assignment of the utility model realizes in the following manner, a kind of road section permeability performance measurement test dress
It sets, including support base and pedestal arranged in parallel, at least two long columns, support base is provided between pedestal and support base
Top is provided with graduated cylinder, and the axle center of graduated cylinder and support base coincides, and is provided with core sample rack, core sample rack below support base
For placing road surface core sample, the upper end of core sample rack is connected with the lower end of graduated cylinder, it is ensured that water when infiltration test, in graduated cylinder
It can smoothly flow on the core sample of road surface.
Preferably, the core sample rack be oppositely arranged by core sample upper bracket and core sample lower bracket form it is rectangular in
Hollow structure.
More preferably, the core sample upper bracket and core sample lower bracket include square base, are offered on square base arc-shaped recessed
Slot, the circular groove for the core sample upper bracket being oppositely arranged and the circular groove of core sample lower bracket form core sample putting hole, core
Sample putting hole is for placing road surface core sample；
The square base of core sample lower bracket is mounted on the base, and the square base of core sample upper bracket is mounted on support by short column
On seat, short column is provided at least two.
More preferably, the lower end of the graduated cylinder is provided with cylinder one, and the internal diameter of cylinder one and the internal diameter of graduated cylinder are identical；
The lower end of cylinder one is provided with cylinder two, and the inside of outer diameter and cylinder two that the outer diameter of cylinder two is less than cylinder one is in
Helical form.
More preferably, the square base upper surface of the core sample upper bracket offers water seepage hole, and water seepage hole penetrates through core sample upper bracket
Square base；
The square base upper surface of core sample upper bracket is provided with connecting cylinder, and connecting cylinder lower end is connected to water seepage hole, on connecting cylinder
End is connected through support base and with cylinder two, and cylinder two is threadedly coupled with connecting cylinder.
More preferably, the square base of the core sample upper bracket and connecting cylinder junction are provided with exhaust valve, are arranged on connecting cylinder
There is control valve, control valve is located between support base and core sample upper bracket.
More preferably, the long column lower end is connect with tube chamber welds with base, and long the upper end of the column passes through wing bolt and support base spiral shell
Line connection, it is ensured that long column and support base are easy for assemble or unload；
The lower end of short column and the square base of core sample upper bracket are welded to connect, and the upper end of short column passes through wing bolt and branch
It supports seat to be threadedly coupled, it is ensured that short column and support base are easy for assemble or unload；
Long column is located at the two sides of square base length direction, short column and the ipsilateral setting of long column, long column and support base
Junction and short column be located on the same line with support base junction, the position of core sample putting hole is vacated, it is convenient
Pick and place road surface core sample.
More preferably, it is provided with graduation mark on the graduated cylinder and graduated cylinder is using transparent organic glass cylinder；
Support base is in disk form and support base uses glass supporting seat；
Pedestal is in disk form.
The road section permeability performance measurement experimental rig of the utility model has the advantage that
(1), the utility model road pavement core boring sampling progress section permeability performance is measured, by certain time
Water percolating capacity and infiltration areal calculation section infiltration index, this method can effectively judge bituminous pavement section permeability performance, this reality
It is suitable for road surface field test with novel method, has the characteristics that quick, efficient, with a high credibility, strong applicability；The utility model
Road surface section or section permeability performance are measured, the limitation of existing conventional pavement seepage test is compensated for；
(2), the road section permeability performance measurement experimental rig of the utility model by road pavement drill core core sample section or
The measurement of section permeability performance realizes the evaluation of road pavement section permeability performance, can more comprehensively evaluate pavement seepage performance, can
Applied to highways and streets, the determination of tunnel bridge floor equal section or section permeability performance, easy to operate, use is light, scene
It is practical；
(3), conventional infiltration test measurement is perpendicular to road surface structare layer, and the infiltration of the utility model measurement is parallel
In structure sheaf, the caused road surface Moisture Damage it is possible to prevente effectively from road surface section or interlayer seep water.
Therefore the utility model has reasonable, simple, easy to process, small in size, easy to use, multi-purpose content of structure of design etc.
Feature, thus, it has good value for applications.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing.
Attached drawing 1 is that road section permeability performance measures experimental rig schematic perspective view；
Attached drawing 2 is the structural schematic diagram that road section permeability performance measures experimental rig；
Attached drawing 3 is the structural schematic diagram of road surface core sample.
In figure: 1, support base, 2, pedestal, 3, long column, 4, graduated cylinder, 5, core sample rack, 6, core sample upper bracket, 7, core sample
Lower bracket, 8, square base, 9, circular groove, 10, core sample putting hole, 11, short column, 12, cylinder one, 13, cylinder two, 14,
Water seepage hole, 15, connecting cylinder, 16, exhaust valve, 17, control valve, 18, wing bolt, 19, graduation mark, 20, gypsic horizon, 21, survey
Try layer, 22, articulamentum.
Specific embodiment
Test is measured to a kind of road section permeability performance of the utility model referring to Figure of description and specific embodiment
Device is described in detail below.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical" "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description.Rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limitation of the utility model.This
Outside, term " first ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be and be directly connected to, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Embodiment 1:
As shown in figure 1 and 2, the road section permeability performance of the utility model measures experimental rig, and structure includes phase
Mutual support base 1 and pedestal 2 disposed in parallel, installation is pacified above support base 1 there are two long column 3 between pedestal 2 and support base 1
Equipped with graduated cylinder 4, graduated cylinder 4 and the axle center of support base 1 coincide, and core sample rack 5, core sample rack 5 are equipped with below support base 1
For placing road surface core sample, the upper end of core sample rack 5 is connected with the lower end of graduated cylinder 4, it is ensured that when infiltration test, in graduated cylinder 4
Water energy enough smoothly flow on the core sample of road surface.Core sample rack 5 is to be oppositely arranged group by core sample upper bracket 6 and core sample lower bracket 7
At square hollow structure；Core sample upper bracket 6 and core sample lower bracket 7 include square base 8, are offered on square base 8 arc-shaped
Groove 9, the circular groove 9 for the core sample upper bracket 6 being oppositely arranged and the circular groove 9 of core sample lower bracket 7 form core sample and put
Hole 10 is set, core sample putting hole 10 is for placing road surface core sample；The square base 8 of core sample lower bracket 7 is mounted on pedestal 2, on core sample
The square base 8 of bracket 6 is mounted on support base 1 by short column 11, and there are two the short installations of column 11.It installs the lower end of graduated cylinder 4
There is cylinder 1, the internal diameter of cylinder 1 is identical as the internal diameter of graduated cylinder 4；The lower end of cylinder 1 is equipped with cylinder 2 13, cylinder
2 13 outer diameter be less than cylinder 1 outer diameter and cylinder 2 13 inside in the shape of a spiral.8 upper end of square base of core sample upper bracket 6
Face offers water seepage hole 14, and water seepage hole 14 penetrates through the square base 8 of core sample upper bracket 6；8 upper surface of square base of core sample upper bracket 6
Connecting cylinder 15 is installed, 15 lower end of connecting cylinder is connected to water seepage hole 14,15 upper end of connecting cylinder through support base 1 and with cylinder 2 13
It is connected, cylinder 2 13 is threadedly coupled with connecting cylinder 15.The square base 8 of core sample upper bracket 6 is equipped with 15 junction of connecting cylinder
Exhaust valve 16 is equipped with control valve 17 on connecting cylinder 15, and control valve 17 is located between support base 1 and core sample upper bracket 6.It is long
3 lower end of column and pedestal 2 are welded to connect, and long 3 upper end of column is threadedly coupled by wing bolt 18 with support base 1, it is ensured that long vertical
Column 3 and support base 1 are easy for assemble or unload；The lower end of short column 11 and the square base 8 of core sample upper bracket 6 are welded to connect, short column
11 upper end is threadedly coupled by wing bolt 18 with support base 1, it is ensured that short column 11 and support base 1 are easy for assemble or unload；It is long
Column 3 is located at the two sides of 8 length direction of square base, short column 11 and the ipsilateral setting of long column 3, the company of long column 3 and support base 1
The place of connecing and short column 11 are located on the same line with 1 junction of support base, and the position of core sample putting hole 10 is vacated, convenient
Pick and place road surface core sample.Graduated cylinder 4 is equipped with graduation mark 19 and graduated cylinder 4 uses transparent organic glass cylinder；Support base 1 is in disk form and props up
It supports seat 1 and uses glass supporting seat；Pedestal 2 is in disk form.
The road section permeability performance measurement of the utility model is using above-mentioned road section permeability performance measurement test
Device road pavement core sample carries out the measurement of end face permeability performance, passes through road surface in time required for regulation water percolating capacity or stipulated time
The water percolating capacity of core sample, and road surface section permeability performance is calculated in conjunction with infiltration area；Specifically comprise the following steps:
(1), scene drills through road surface core sample, and road surface core sample includes road surface adhesive layer, and every road section surface drills through the number of road surface core sample
The diameter for measuring position three and road surface core sample is 100mm or 150mm；
(2), road surface core sample is subjected to full water process, dried the road surface surface Xin Yang after full water process, and in road surface core sample
Surface smear sealing material and form band, sealing material is applied to the road surface adhesive layer two sides of road surface core sample, sealing material
Using glass cement or high viscosity modified emulsifying asphalt；
(3), road surface core sample is placed in the core sample putting hole 10 of core sample rack 5, the axis pair of core sample putting hole 10
Quasi- band center line；Water is injected into graduated cylinder 4, after installation is sealed, is opened control valve 17 and is started to test；
(4), decline graduated cylinder water level decreasing amount in the time or measurement stipulated time of certain water level in measurement graduated cylinder 4；Tool
Body are as follows:
If 1., seepage velocity be 3min in water level decreasing amount be greater than 200ml, measure graduated cylinder in water level declined by 50-150ml
To the time required for 250-350ml；It is preferred that water level as 100ml drops to the time required for 300ml in measurement graduated cylinder；
If 2., seepage velocity be that water level decreasing amount is less than 200ml in 3min, the water percolating capacity for measuring 1-5min can stop
Only；It is preferred that the water percolating capacity of measurement 3min；
(5), bituminous pavement section infiltration coefficient is calculated: using the ratio of water level decreasing amount and band area as section
Infiltration coefficient；Bituminous pavement section infiltration coefficient calculating process is as follows:
Wherein, ICw indicates road surface section infiltration coefficient；V1Indicate the water (ml) of first time timing, usually 100ml；V2
Indicate the water (ml) of first time timing, usually 300ml；The diameter (cm) of R expression core sample；D is indicated between band
Width (cm), i.e. the practical infiltration width of test specimen, usually 3cm；T1: the time (s) of first time timing；T2: second of timing
Time (s), T1And T2It is usually all 3min, actual tests room is adjustable.
(6), section of the average value of all road surface core sample section infiltration coefficients of the road section surface as the road section surface is calculated
Infiltration coefficient.
Embodiment 2:
[instrument and material]
Road engineering drill core testing machine, road section permeability performance measurement experimental rig, testing machine drill bit are divided into Φ
100,150 two kinds of specifications of Φ, the preferably road surface Φ 150mm core sample, test sealing material use glass cement or high viscosity modified emulsifying
Pitch.
[core boring sampling]
Using road surface drill core testing machine, carries out carrying out drill core in road surface designated position according to code requirement method, be drilled through
Core sample is needed comprising asphalt tack coat to be determined.
[disposition of test specimen]
It after road surface core sample takes out, is impregnated in water after core sample surface is cleaned up with clear water, soaking time 5min is right
Test specimen carries out full water process.Core sample surface is wiped after the completion of processing, and core sample surface is dried up；High-viscous emulsified asphalt is applied to disconnected
Face bonds two side positions, and measurement area can be adjusted as needed, places road surface core sample after high-viscous emulsified asphalt demulsification
Onto core sample rack, base center need to be directed at section adhesive layer, be then fixed and seal, and carry out after completing above-mentioned steps
Test measurement.
In addition, when needing the interlayer measured or section upper layer is thin layer (thickness < 2cm), to guarantee measurement test
Progress, mould can be done with gypsum above thin layer, the thickness of gypsic horizon is preferably greater than 4cm, and thickness should ensure that core sample has well
Fixed effect, carry out permeability performance test again after gypsum forms completely.As shown in Fig. 3, test layer is adhesive layer, even
Next layer that layer is road surface adhesive layer is connect, gypsic horizon replaces upper one layer of adhesive layer.
[test procedure]
The water of specified altitude will be injected in graduated cylinder, after water fills completely, start stopwatch and carry out infiltration test.It adds water to
0ml height starts control valve, carries out timing.Measure the test data of 5min or so.Permeability performance index uses infiltration coefficient
ICw is characterized, and preferably, section width area is 3cm for this test.
[calculating of section infiltration index]
1., bituminous pavement section infiltration coefficient calculating process it is as follows:
Wherein, ICw indicates road surface section infiltration coefficient；V1Indicate the water (ml) of first time timing, usually 100ml；V2
Indicate the water (ml) of first time timing, usually 300ml；The diameter (cm) of R expression core sample；D is indicated between band
Width (cm), usually 3cm；T1: the time (s) of first time timing；T2: the time (s) of second of timing, T1And T2Usually
It is all 3min, actual tests room is adjustable.
2., average: calculate the average value of all road surface core sample section infiltration coefficients of the road section surface as the Duan Lu
The section infiltration coefficient in face.
[comparative example]: infiltration coefficient is as shown in the table:
Conventional water creep appearance measures infiltration coefficient
Note 1: conventional infiltration test infiltration contact road surface is circle, diameter 15mm.
[application example]: as shown in the table using the core sample infiltration coefficient of the utility model:
2 section water creep appearance of table measures infiltration coefficient application example
Note 1: for the core diameter that this test uses for 15cm, sealing interband width is 3cm.
To its infiltration coefficient and section infiltration coefficient is measured after the outrigger location of a certain highway old road, wherein [comparison is real
Apply example] it is to be carried out using the instrument parameter of highway engineering pitch and Asphalt Mixture Experiment regulation (JTG E20-2011) defined
The infiltration coefficient of road surface measures, and [application example] is the section infiltration coefficient measured after the coring of corresponding position.It compares above-mentioned
The discovery of two tables, routine test measure road surface infiltration coefficient, and road surface is almost impermeable, but is surveyed by section water creep appearance
Fixed, position 1, the infiltration of 2 section of position are very fast.Later period tracking observation finds that road surface pit slot occurs in section corresponding to position 1, position 2
Equal Water Damages phenomenon, into think position 1, at position 2 interlayer section rubber asphalt adhesive layer spread unevenness with cause interlayer
Voidage is big, and after heavy rainfall, moisture enters bituminous pavement from interlayer, under flowing pressure effect, ultimately causes interlaminar bonding mistake
, there is road surface pit slot in effect.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (8)
1. a kind of road section permeability performance measures experimental rig, which is characterized in that including support base arranged in parallel and
Pedestal is provided at least two long columns between pedestal and support base, graduated cylinder, setting below support base are provided with above support base
There is core sample rack, for placing road surface core sample, the upper end of core sample rack is connected core sample rack with the lower end of graduated cylinder.
2. road section permeability performance according to claim 1 measures experimental rig, which is characterized in that the core sample is placed
Frame is oppositely arranged the square hollow structure formed by core sample upper bracket and core sample lower bracket.
3. road section permeability performance according to claim 2 measures experimental rig, which is characterized in that propped up on the core sample
Frame and core sample lower bracket include square base, offer circular groove on square base, the circle for the core sample upper bracket being oppositely arranged
The circular groove of arc groove and core sample lower bracket forms core sample putting hole, and core sample putting hole is for placing road surface core sample；
The square base of core sample lower bracket is mounted on the base, and the square base of core sample upper bracket is mounted on support base by short column
On, short column is provided at least two.
4. road section permeability performance according to claim 2 or 3 measures experimental rig, which is characterized in that the graduated cylinder
Lower end be provided with cylinder one, the internal diameter of cylinder one and the internal diameter of graduated cylinder are identical；
The lower end of cylinder one is provided with cylinder two, and the outer diameter of cylinder two is less than the inside of the outer diameter of cylinder one and cylinder two helically
Shape.
5. road section permeability performance according to claim 4 measures experimental rig, which is characterized in that propped up on the core sample
The square base upper surface of frame offers water seepage hole, and water seepage hole penetrates through the square base of core sample upper bracket；
The square base upper surface of core sample upper bracket is provided with connecting cylinder, and connecting cylinder lower end is connected to water seepage hole, and connecting cylinder upper end is passed through
It wears support base and is connected with cylinder two, cylinder two is threadedly coupled with connecting cylinder.
6. road section permeability performance according to claim 5 measures experimental rig, which is characterized in that propped up on the core sample
The square base of frame and connecting cylinder junction are provided with exhaust valve, and control valve is provided on connecting cylinder, and control valve is located at support
Between seat and core sample upper bracket.
7. road section permeability performance according to claim 6 measures experimental rig, which is characterized in that under the long column
End is connect with tube chamber welds with base, and long the upper end of the column is threadedly coupled by wing bolt with support base；
The lower end of short column and the square base of core sample upper bracket are welded to connect, and the upper end of short column passes through wing bolt and support base
It is threadedly coupled；
Long column is located at the two sides of square base length direction, short column and the ipsilateral setting of long column, the company of long column and support base
The place of connecing and short column are located on the same line with support base junction.
8. road section permeability performance according to claim 7 measures experimental rig, which is characterized in that set on the graduated cylinder
It is equipped with graduation mark and graduated cylinder is using transparent organic glass cylinder；
Support base is in disk form and support base uses glass supporting seat；
Pedestal is in disk form.
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| CN201920111447.4U CN209624309U (en) | 2019-01-23 | 2019-01-23 | A kind of road section permeability performance measurement experimental rig |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709019A (en) * | 2019-01-23 | 2019-05-03 | 山东省交通科学研究院 | A kind of road section permeability performance measuring method and experimental rig |
| CN114216827A (en) * | 2021-11-22 | 2022-03-22 | 贵州公路集团第九工程有限公司 | Device and method for testing permeability coefficient of pervious concrete pavement |
-
2019
- 2019-01-23 CN CN201920111447.4U patent/CN209624309U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709019A (en) * | 2019-01-23 | 2019-05-03 | 山东省交通科学研究院 | A kind of road section permeability performance measuring method and experimental rig |
| CN114216827A (en) * | 2021-11-22 | 2022-03-22 | 贵州公路集团第九工程有限公司 | Device and method for testing permeability coefficient of pervious concrete pavement |
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