CN106769775A - Ooze bituminous paving infiltration detection means and method in a kind of dynamic anti-side of water pressurization - Google Patents
Ooze bituminous paving infiltration detection means and method in a kind of dynamic anti-side of water pressurization Download PDFInfo
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- CN106769775A CN106769775A CN201710025448.2A CN201710025448A CN106769775A CN 106769775 A CN106769775 A CN 106769775A CN 201710025448 A CN201710025448 A CN 201710025448A CN 106769775 A CN106769775 A CN 106769775A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Abstract
Bituminous paving infiltration detection means and method are oozed the invention discloses a kind of dynamic anti-side of water pressurization, it is that test block is placed between pressurization top board and pressurization base plate, and reinforced with screw rod is reinforced, by being added water or pressurization of ventilating in controller control infiltration groove, make pressure (hydraulic) water with pulsed dynamic pressurized model function on test block, and using side ooze water leg and the straight collector pipe that oozes collects lateral seepage and straight infiltration respectively, true reappearance of the present invention bituminous paving infiltration environment in actual use, and effectively eliminate the influence that sweat of satisfying the need is oozed in side, the antiseepage outlet capacity of bituminous paving can more accurately be judged.
Description
Technical field
The invention belongs to bituminous paving infiltration detection technique field, and in particular to adding under a kind of simulation road table flowing pressure
Anti- side is pressed to ooze bituminous paving infiltration detection means and method.
Background technology
The permeability performance on road surface is a major criterion for weighing pavement quality quality, and the water penetration of pavement structure is also it
The important parameter that guarded drainage analysis should consider.Road surface produces the existing lot of documents of form and mechanism of infringement to do because of infiltrating for water
Illustrate.The infiltration test of bituminous paving is thus carried out, on every factor of research influence bituminous paving permeability performance, to solve
Water Damage problem, it is ensured that bituminous paving quality, the service life for extending bituminous paving has great importance.
The infiltration coefficient obtained by detection experiment of seeping water is that the unit interval oozes in the case where certain initial hydrostatic head is acted on
Enter the water in certain road area.By the pavement seepage instrument that we are used at present is static pressure varying head, so for not
With section, measured infiltration coefficient and the correlation of road surface water permeable ability be not very by force, only can only be rough according to specification
Judge whether to meet the requirement of specification.Difference of the different tests personnel on experimental working technique, makes test result in addition
Authenticity and accuracy are affected, and then have influence on the reasonable judgement to bituminous paving behaviour in service.It is therefore desirable to be directed to
Current bituminous paving infiltration detection method does corresponding research, further carries out more accurately and efficiently laboratory seepage inspection
Survey device and method.
The infiltration form of asphalt concrete pavement mainly has 3 kinds, i.e., ooze down, side is oozed, the infiltration of combined type.The form of infiltration
Difference, harmfulness is also different.Current infiltration coefficient index can not effectively distinguish infiltration form, such as, in some measuring points, carve
Angle value changes very greatly, but can observe the water that water is flowed out around measuring point, is not almost oozed down at the scene,
This is relatively common on relatively rough road surface, and it is big to be mainly surface void rate the reason for this thing happens, lower space rate
Small, surface intercommunicating pore is more, after water flows into base from top to bottom, is oozed along surface intercommunicating pore side, and then the other end in hole flows out
Road surface.It is well known that what the water that road surface Moisture Damage oozes under being mainly was caused, the water harmfulness that side seepage flow goes out is little, if conversely,
Superficial layer can be seeped water quickly, and moisture film will not be formed again, can there is very big benefit to skid resistance.But it is not differentiate between according to current specifications
What is oozed with oozed in side, simply broadly calculates infiltration coefficient, and sometimes infiltration coefficient is very big, but water is side, and seepage flow goes out, and
Although sometimes infiltration coefficient is not especially big, basic unit is seeped under water energy, it is evident that the harm of the latter's road pavement is higher than
The former.
Furthermore, road surfaces can form one layer of cross flow moisture film under precipitation condition, in vehicle traveling, between tire and road surface it
Between moisture film be constantly extruded, then table water in road generates a dynamic, instantaneous water pressure under extrusion, that is, move hydraulic pressure
Power.The lower water of flowing pressure effect can be pressed into the space of road surface, and then road pavement inside configuration produces destruction, but existing
Pavement seepage detection means and method do not account for flowing pressure and satisfy the need the influence of sweat, this be also now pavement seepage grind
Study carefully a weak point in field.
Therefore, the present invention proposes a kind of new bituminous paving infiltration detection means and method, can effectively eliminate side and ooze
With the influence of varying head, make to set up the dependency relation of stabilization between infiltration coefficient and road surface water permeable ability, and introduce flowing pressure
Concept, the infiltration coefficient for measuring preferably is reflected that road surface is really seeped water situation, so as to further improve road surface ooze
The practicality and stability of water instrument, make it weigh bituminous paving traffic status, prevention Water Damage on Asphalt Pavement, carry out reasonably
The aspects such as maintenance of surface play bigger effect.
The content of the invention
In order to overcome the shortcomings of existing for prior art, bituminous paving can be truly simulated dynamic the invention provides one kind
Infiltration situation under water pressure, effectively eliminates side and oozes the dynamic water anti-side of pressurizeing of influence to result of the test and simple structure and ooze drip
Blue or green pavement seepage detection means.
Ooze bituminous paving infiltration inspection in the anti-side of dynamic water pressurization realized present invention also offers a kind of utilization above-mentioned detection device
Survey method, its test result is accurate, stabilization.
To achieve these goals, the technical solution adopted in the present invention is：
Bituminous paving infiltration detection means is oozed in the dynamic water anti-side of pressurizeing, including can provide mounting platform support frame and
Infiltration groove above support frame, water tank connect with infiltration groove by feed pipe, by tracheae and the infiltration groove company of pressurizeing
Logical air pump, the water supply control valve on feed pipe, pneumatic control valve and water supply control valve on pressurization tracheae
The controller electrically connected with pneumatic control valve, controller is connected with computer；It is provided with for compressing test block on support frame
And the pressurization top board at the top and bottom of test block and pressurization base plate are located at respectively, by reinforcing between pressurization top board and pressurization base plate
Screw rod connect, infiltration groove be arranged on pressurization top board on, pressurization top board in the middle part of be machined with permeable hole and by permeable hole with
The infiltration cavity of infiltration trench bottom connection, spilled water hole is machined with the middle part of pressurization base plate, and side is machined with the periphery of spilled water hole
Ooze water leg, side is oozed water leg and oozes collector pipe by side the measuring cup that catchments is oozed with side and connects, be provided with below pressurization base plate with
Relative straight of spilled water hole oozes collector pipe, and is oozed the measuring cup that catchments and connected with straight by the straight collector pipe that oozes；
Pressure sensor is provided with above-mentioned infiltration groove, collector pipe is oozed and side is oozed and is respectively arranged with the measuring cup that catchments straight
Level sensor, pressure sensor and level sensor are connected by data wire with computer.
Further preferably, the relation between the diameter D and the diameter d of test block of the infiltration cavity meets：0.8~0.9:
1。
Further preferably, it is the annular groove that a section is triangle, groove internal diameter and test block that water leg is oozed in the side
Diameter d is equal, and bottom land is downward-sloping from inside to outside.
Further preferably, the bottom land of water leg is oozed in the side and horizontal plane forms 30~60 ° of angles.
Further preferably, the cylindrical side wall and horizontal plane or outward-dipping of water leg are oozed in the side.
Further preferably, position relative with test block periphery on pressurization top board and pressurization base plate is provided with the sealing of O shapes
Circle.
Further preferably, the test block is Bituminous Pavement drill core core sample gained or standard asphalt compound horse
Xie Er test specimens.
It is a kind of to ooze the bituminous paving infiltration detection that bituminous paving infiltration detection means is realized with the above-mentioned anti-side of dynamic water pressurization
Method, comprises the steps of：
(1) test block is fixed between pressurization top board and pressurization base plate by reinforcing screw pressurizing, opens control of supplying water
Valve, to water is filled in infiltration groove, closes water supply control valve, opens pneumatic control valve, makes to form pressure (hydraulic) water in infiltration groove, by seeping water
Pressure sensor Real-time Collection hydraulic signal in groove simultaneously feeds back to controller, until the hydraulic pressure in infiltration groove reaches setting value P
It is 0.7~1.0MPa, is kept for constant pressure persistent pressure time t1It is 0.1~0.5s, water supply control valve is opened afterwards, closes air pressure control
Valve processed, the water under high pressure in infiltration groove into water tank, can make the pressure (hydraulic) water pressure release in infiltration groove countercurrently through water supply control valve, hold
Continuous time t2It is 2~4s；
(2) pressurization and pressure discharge operations are repeated, the pressure (hydraulic) water of infiltration groove is formed the dynamic water pattern of pressure of pulsed, by permeable
Hole and is permeated downwards full of infiltration cavity from the upper end of test block, and it is 1~3min persistently to move water pressurization t, a part of water vertically to
Under, the spilled water hole of pressurized base plate flows downward, and through directly oozing collector pipe water conservancy diversion, is collected in directly the measuring cup that catchments is oozed；Another part
, there is side and ooze in water bottom horizontal flow sheet under pressure, collector pipe water conservancy diversion is oozed through side from the sidepiece of test block, and the measuring cup that catchments is oozed in side
Middle collection；Directly ooze the level sensor for oozing in the measuring cup that catchments in catchment measuring cup and side feeds back to computer by water level information, by calculating
Machine is further processed；
(3) straight under hydraulic pressure P for calculating the test block according to following formula oozes coefficient C1Coefficient C is oozed with side2Influence is oozed with side
Rate γ,
Wherein, C1(P, t1/t2) --- the straight of test block oozes coefficient, mL/ (min*cm2)；
C2(P, t1/t2) --- ooze coefficient, mL/ (min*cm in the side of test block2)；
Ooze contributive rate, % in γ --- side；
P --- constant water pressure, MPa；
t1/t2--- dynamic Water hydraulic static pressure loading pattern, t1It is hydraulic pressure pressing time, t2It is venting duration, in terms of s；
V1--- straight water percolating capacity, mL；
V2--- lateral seepage quantity, mL；
T --- the infiltration time, min；
δ1--- area conversion coefficient, equal to S1/S2, S1It is the actual infiltration area π D of instrument2/ 4, S2For codes and standards seep water
Area 176.7cm2。
Compared with prior art, dynamic water of the invention pressurize anti-side ooze bituminous paving infiltration detection means and method have with
Lower advantage：
(1) switch by controlling water supply control valve and pneumatic control valve of the invention, is added to the water supply in infiltration groove
Pressure and pressure discharge operations, form the dynamic water pattern of pressure of pulsed, simulate wheel and road surface during the wheels travel on actual road surface
Between flowing pressure effect, make testing result closer to truth, testing result is more accurate.
(2) the infiltration current of test block are divided into straight oozing and ooze two parts with side by the present invention, and are measured respectively, must be somebody's turn to do respectively
The straight of test block oozes coefficient and coefficient is oozed in side, efficiently solves side and oozes influence to the result that seeps water, and mixing evaluation institute band
The resultant error come, can more accurately judge the antiseepage outlet capacity of bituminous paving.
(3) detection sample of the present invention is road surface coring core sample, can be eliminated because of the difference between external world's detection environment
Influence produced by different, detection data stability is greatly improved, and can be combined with IMM algorithm, routine servicing detection
Come, pavement seepage is detected simpler easy operation.
(4) present invention can realize automation, integral standard detection, between can effectively reducing different tests testing staff
Human error, make detection data stability more preferable.
(5) structure of the detecting device of the invention is simple, easy to operate, and testing cost is relatively low.
Brief description of the drawings
Fig. 1 oozes bituminous paving infiltration structure of the detecting device schematic diagram for the anti-side of dynamic water pressurization of embodiment 1.
Fig. 2 is the structural representation of the pressurization top board 7 in Fig. 1.
Fig. 3 is the structural representation of the pressurization base plate 9 in Fig. 1.
Specific embodiment
Technical scheme is further described in conjunction with drawings and Examples, but the present invention is not limited only to
Following implementation situations.
Embodiment 1
As shown in Figure 1, it is by water tank 5, air pump that bituminous paving infiltration detection means is oozed in the anti-side of dynamic water pressurization of the present embodiment
1st, support frame 13, water supply control valve 4, pneumatic control valve 3, infiltration groove 6, pressure sensor 2, controller 18, computer 19, pressurization
Top board 7, pressurization base plate 9, reinforce screw rod 8, side and ooze collector pipe 10, straight ooze collector pipe 14, side and ooze the measuring cup 11 that catchments, directly ooze collecting water from runoff
Cup 15, O shapes rubber seal 17 and straight infiltration level sensor 16, the combination of lateral seepage level sensor 12 are constituted.
The support frame 13 of the present embodiment provides platform for the installation of whole device, be installed with support frame 13 for
Test block and the pressurization top board 7 and pressurization base plate 9 that are located at respectively at the top and bottom of test block are compressed, the test block of the present embodiment is adopted
With Bituminous Pavement drill core core sample, in cylinder, its a diameter of 10cm, the highly Laminate construction thickness with bituminous paving are equal,
The upper and lower surfacing of test block is without breakage.It is connected by reinforcing screw rod 8 between pressurization top board 7 and pressurization base plate 9, is reinforced
Screw rod 8 totally 3, is fastened, for manually elastic by reinforcing nut.It is provided with for holding pressurization on pressurization top board 7
The infiltration groove 6 of water, the top of the groove 6 that seeps water offers inlet opening and passage, and infiltration groove 6 is by the water supply on inlet opening
Pipe is connected with constant temperature water tank 5, and water supply control valve 4 is provided with feed pipe, is general solenoid valve, by wire and controller 18
Connection.Infiltration groove 6 is connected by the pressurization tracheae on passage with air pump 1, and air pressure control is provided with pressurization tracheae
Valve processed 3, pneumatic control valve 3 is also to be connected with controller 18 by wire, and water supply control valve 4 and air pressure control are controlled by controller 18
The open and close of valve processed 3, and then adjust the pressure (hydraulic) water pressure size in infiltration groove 6.In order in real-time monitoring infiltration groove 6
Hydraulic pressure size, infiltration groove 6 on be provided with pressure sensor 2, pressure sensor 2 is connected with computer 19, computer 19 with control
Device processed 18 is connected, and is compared according to pressure signal size and setting value by computer 19, so as to issue control to controller 18
Instruction, the open and close of water supply control valve 4 and pneumatic control valve 3 are controlled by controller 18.
The present embodiment is provided with delivery port in the bottom of infiltration groove 6, and correspondence also offers aperture and is at the middle part of pressurization top board 7
The permeable hole of 1cm, referring to Fig. 2, the lower surface of pressurization top board 7 middle part of the present embodiment hollows out, and forms infiltration cavity a, is oozed with increasing
The contact surface of water and test block.The diameter of infiltration cavity a is 8cm.
Referring to Fig. 3, the middle part of the pressurization base plate 9 of the present embodiment is machined with multiple spilled water holes, and the aperture of spilled water hole is 1cm,
Pitch of holes is 1.5cm, ooze under straight infiltration for being guided.Water leg is oozed in the side that annular shape is machined with the outside of spilled water hole, is
Reduction lateral seepage overflow, the internal diameter that water leg is oozed in the side of the present embodiment is 10cm, and just the periphery with test block is relative, groove width
It is 2cm, the bottom land for oozing water leg in side is machined with apopore, collector pipe 10 and and side is oozed by the side on the apopore
Ooze the measuring cup 11 that catchments to connect, the lateral seepage that water leg collection is oozed in side is collected in the measuring cup 11 that catchments is oozed in side.In order to ensure that side is oozed
Draining smoothly, the bottom angled that water leg is oozed in side is set in water leg, and water leg is oozed in inclination angle for the side of 60 °, i.e. the present embodiment
It is that a section is the annular groove of right angled triangle, the inner side of bottom land is concordant with the upper surface of pressurization base plate 9, outside depression, i.e.,
Bottom land is in inclined-plane downward-sloping from inside to outside, and 60 ° of angle is formed between bottom land and horizontal plane, and the cylindrical side of water leg is oozed in side
Wall and horizontal plane.The bottom of pressurization base plate 9 be connected with spilled water hole just to it is straight ooze collector pipe 14, directly ooze collector pipe 14
It is funnel-form, is easy to drainage of directly seeping water, be provided with the bottom for directly oozing collector pipe 14 and directly ooze the measuring cup 15 that catchments, collects straight infiltration.
In order to ensure pressurization top board 7, good sealing effect between pressurization base plate 9 and test block, seeped water on pressurization top board 7 empty
The position that the outside of chamber a contacts with test block top edge is machined with annular groove, and upper O rubber is embedded with annular groove
Glue sealing ring 17, correspondence is located at the outside of spilled water hole on pressurization base plate 9, the position of the inner side that water leg is oozed in side is machined with and survey
The annular groove of test specimen EDGE CONTACT, is embedded in lower O rubber seal 17 in annular groove, makes pressurization base plate 9, pressurization top
Plate 7 is tightly connected with test block, and the inflow of part bottom directly oozes collector pipe 14 after tested to prevent lateral seepage.
The straight infiltration position in the measuring cup 15 that catchments directly is oozed in order to accurate measurement, is provided with directly the measuring cup 15 that catchments is oozed straight
Infiltration level sensor 16, correspondence is provided with lateral seepage level sensor 12, lateral seepage level sensor 12 in the measuring cup 11 that catchments is oozed in side
It is connected with computer 19 by data wire respectively with straight infiltration level sensor 16, water level information is sent to computer 19, by counting
Calculation machine 19 is further analyzed and processed.
The pattern of pressure t that infiltration coefficient of the present invention is defined as test specimen under the hydraulic pressure P of regulation and gives1/t2The lower unit interval
The interior straight water for penetrating into unit area, with mL/ (min*cm2), the permeability performance for evaluating bituminous paving.
The side that bituminous paving infiltration detection means realizes bituminous paving infiltration detection is oozed using the above-mentioned anti-side of dynamic water pressurization
Method, comprises the steps of：
(1) pressurization top board 7 will be fixed on by reinforcing the pressurization of screw rod 8 in test block obtained by Bituminous Pavement drill core core sample
And pressurization base plate 9 between, water supply control valve 4 is opened, to water is filled in infiltration groove 6, close water supply control valve 4, open air pressure control
Valve processed 3, makes to form pressure (hydraulic) water in infiltration groove 6, by the Real-time Collection hydraulic signal of pressure sensor 2 in infiltration groove 6 and feeds back to
Controller 18, until the hydraulic pressure in infiltration groove 6 reaches setting value P for 0.9MPa, the holding constant pressure persistent pressure time is 0.3s, it
Water supply control valve 4 is opened afterwards, pneumatic control valve 3 is closed, and the water under high pressure in infiltration groove 6 can be countercurrently through water supply control valve 4, into water
In case 5, make the pressure (hydraulic) water pressure release in infiltration groove 6, the duration is 3s；
(2) pressurization and pressure discharge operations are repeated, the pressure (hydraulic) water of infiltration groove 6 is formed the dynamic water pattern of pressure of pulsed, by saturating
Water hole and is permeated downwards full of infiltration cavity a from the upper end of test block, and it is 2min persistently to move water pressurization t, a part of water vertically to
Under, the spilled water hole of pressurized base plate 9 flows downward, and through directly oozing the water conservancy diversion of collector pipe 14, is collected in directly the measuring cup 15 that catchments is oozed；It is another
, there is side and ooze in part water bottom horizontal flow sheet under pressure, the water conservancy diversion of collector pipe 10 is oozed through side from the sidepiece of test block, and collection is oozed in side
Collected in water cup 11；Directly ooze the level sensor for oozing in the measuring cup 11 that catchments in catchment measuring cup 15 and side feeds back to meter by water level information
Calculation machine 19, is further processed by computer 19；
(3) straight under hydraulic pressure P for calculating the test block according to following formula oozes coefficient C1Coefficient C is oozed with side2Influence is oozed with side
Rate γ.
Wherein, C1(P, t1/t2) --- the straight of test block oozes coefficient, mL/ (min*cm2)；
C2(P, t1/t2) --- ooze coefficient, mL/ (min*cm in the side of test block2)；
Ooze contributive rate, % in γ --- side；
P --- constant water pressure, MPa；
t1/t2--- dynamic Water hydraulic static pressure loading pattern, t1It is hydraulic pressure pressing time, t2It is venting duration, in terms of s；
V1--- straight water percolating capacity, mL；
V2--- lateral seepage quantity, mL；
T --- the infiltration time, min；
δ1--- area conversion coefficient, equal to S1/S2, S1It is the actual infiltration area π D of instrument2/ 4, S2For codes and standards seep water
Area 176.7cm2。
Embodiment 2
The present embodiment is provided with delivery port in the bottom of infiltration groove 6, and correspondence also offers aperture and is at the middle part of pressurization top board 7
The permeable hole of 0.5cm, the lower surface of pressurization top board 7 middle part of the present embodiment hollows out, and forms infiltration cavity a, to increase infiltration and survey
The contact surface of test specimen.The diameter of infiltration cavity a is 9cm.
The middle part of the pressurization base plate 9 of the present embodiment is machined with multiple spilled water holes, and the aperture of spilled water hole is 0.5cm, pitch of holes
It is 1cm, ooze under straight infiltration for is guided.Water leg is oozed in the side that annular shape is machined with the outside of spilled water hole, in order to reduce side
Infiltration overflow, the internal diameter that water leg is oozed in the side of the present embodiment is 10cm, and just the periphery with test block is relative, and groove width is 2cm,
The bottom land that water leg is oozed in side is machined with apopore, oozes collector pipe 10 by the side on the apopore and oozes collecting water from runoff with side
Cup 11 is connected, and the lateral seepage that water leg collection is oozed in side is collected in the measuring cup 11 that catchments is oozed in side.In ensureing that water leg is oozed in side
Draining smoothly, side is oozed the bottom downward-sloping setting from inside to outside of water leg, and the inclination angle of bottom land is 30 °, and water leg is oozed in side
V-arrangement connection is formed between cylindrical side wall and bottom land, it is ensured that the water energy that side oozes collected by water leg is enough all excluded.
Other parts and its annexation are same as Example 1.
The method of the bituminous paving infiltration detection of the present embodiment, comprises the steps of：
(1) standard asphalt compound marshal piece is fixed on pressurization top as test block by reinforcing the pressurization of screw rod 8
Between plate 7 and pressurization base plate 9, water supply control valve 4 is opened, to water is filled in infiltration groove 6, close water supply control valve 4, open air pressure
Control valve 3, makes to form pressure (hydraulic) water in infiltration groove 6, by the Real-time Collection hydraulic signal of pressure sensor 2 in infiltration groove 6 and feeds back
To controller 18, until the hydraulic pressure in infiltration groove 6 reaches setting value P for 1.0MPa, the holding constant pressure persistent pressure time is 0.1s,
Water supply control valve 4 is opened afterwards, pneumatic control valve 3 is closed, and the water under high pressure in infiltration groove 6 can countercurrently through water supply control valve 4 enter
In water tank 5, make the pressure (hydraulic) water pressure release in infiltration groove 6, the duration is 2s；
(2) pressurization and pressure discharge operations are repeated, the pressure (hydraulic) water of infiltration groove 6 is formed the dynamic water pattern of pressure of pulsed, by saturating
Water hole and is permeated downwards full of infiltration cavity a from the upper end of test block, and it is 3min persistently to move water pressurization t, a part of water vertically to
Under, the spilled water hole of pressurized base plate 9 flows downward, and through directly oozing the water conservancy diversion of collector pipe 14, is collected in directly the measuring cup 15 that catchments is oozed；It is another
, there is side and ooze in part water bottom horizontal flow sheet under pressure, the water conservancy diversion of collector pipe 10 is oozed through side from the sidepiece of test block, and collection is oozed in side
Collected in water cup 11；Directly ooze the level sensor for oozing in the measuring cup 11 that catchments in catchment measuring cup 15 and side feeds back to meter by water level information
Calculation machine 19, is further processed by computer 19；
(3) straight under hydraulic pressure P for calculating the test block according to following formula oozes coefficient C1Coefficient C is oozed with side2Influence is oozed with side
Rate γ.
Wherein, C1(P, t1/t2) --- the straight of test block oozes coefficient, mL/ (min*cm2)；
C2(P, t1/t2) --- ooze coefficient, mL/ (min*cm in the side of test block2)；
Ooze contributive rate, % in γ --- side；
P --- constant water pressure, MPa；
t1/t2--- dynamic Water hydraulic static pressure loading pattern, t1It is hydraulic pressure pressing time, t2It is venting duration, in terms of s；
V1--- straight water percolating capacity, mL；
V2--- lateral seepage quantity, mL；
T --- the infiltration time, min；
δ1--- area conversion coefficient, equal to S1/S2, S1It is the actual infiltration area π D of instrument2/ 4, S2For codes and standards seep water
Area 176.7cm2。
Embodiment 3
The present embodiment is provided with delivery port in the bottom of infiltration groove 6, and correspondence also offers aperture and is at the middle part of pressurization top board 7
The permeable hole of 0.5cm, the lower surface of pressurization top board 7 middle part of the present embodiment hollows out, and forms infiltration cavity a, to increase infiltration and survey
The contact surface of test specimen.The diameter of infiltration cavity a is 8cm.
The middle part of the pressurization base plate 9 of the present embodiment is machined with multiple spilled water holes, and the aperture of spilled water hole is 0.1cm, pitch of holes
It is 0.5cm, ooze under straight infiltration for is guided.Water leg is oozed in the side that annular shape is machined with the outside of spilled water hole, in order to reduce
Lateral seepage overflow, the internal diameter that water leg is oozed in the side of the present embodiment is 10cm, and just the periphery with test block is relative, and groove width is 2cm,
The bottom land for oozing water leg in side is machined with apopore, and oozing collector pipe 10 by the side on the apopore catchments with being oozed with side
Measuring cup 11 is connected, and the lateral seepage that water leg collection is oozed in side is collected in the measuring cup 11 that catchments is oozed in side.In order to ensure that water leg is oozed in side
Middle draining smoothly, side is oozed the bottom downward-sloping setting from inside to outside of water leg, and inclination angle is 45 °, and the cylindrical of water leg is oozed in side
V-arrangement connection is formed between side wall and bottom land, it is ensured that the water energy that side oozes collected by water leg is enough all excluded.
Other parts and its annexation are same as Example 1.
The method of the bituminous paving infiltration detection of the present embodiment, comprises the steps of：
(1) the standard asphalt compound marshal piece after full water process is pressurizeed as test block by reinforcing screw rod 8
It is fixed between pressurization top board 7 and pressurization base plate 9, opens water supply control valve 4, to water is filled in infiltration groove 6, closes control of supplying water
Valve 4, opens pneumatic control valve 3, makes to form pressure (hydraulic) water in infiltration groove 6, by the Real-time Collection water of pressure sensor 2 in infiltration groove 6
Pressure signal simultaneously feeds back to controller 18, until the hydraulic pressure in infiltration groove 6 reaches setting value P for 0.7MPa, keeps constant pressure persistently to add
The pressure time is 0.5s, and water supply control valve 4 is opened afterwards, closes pneumatic control valve 3, and the water under high pressure meeting adverse current in infiltration groove 6 is through supplying
Water control valve 4, into water tank 5, makes the pressure (hydraulic) water pressure release in infiltration groove 6, and the duration is 4s；
(2) pressurization and pressure discharge operations are repeated, the pressure (hydraulic) water of infiltration groove 6 is formed the dynamic water pattern of pressure of pulsed, by saturating
Water hole is permeated downwards full of infiltration cavity a from the upper end of test block, starts when directly oozing and having a small amount of infiltration on the wall of collector pipe 14
Timing, it is 2min persistently to move water pressurization t, and straight down, the spilled water hole of pressurized base plate 9 flows downward a part of water, through directly oozing
The water conservancy diversion of collector pipe 14, collects in directly the measuring cup 15 that catchments is oozed；Another part water bottom horizontal flow sheet under pressure, from test block
There is side and ooze in sidepiece, the water conservancy diversion of collector pipe 10 is oozed through side, be collected in the measuring cup 11 that catchments is oozed in side；Straight oozing catchments measuring cup 15 and collection is oozed in side
Water level information is fed back to computer 19 by the level sensor in water cup 11, is further processed by computer 19；
(3) straight under hydraulic pressure P for calculating the test block according to following formula oozes coefficient C1Coefficient C is oozed with side2Influence is oozed with side
Rate γ.
Wherein, C1(P, t1/t2) --- the straight of test block oozes coefficient, mL/ (min*cm2)；
C2(P, t1/t2) --- ooze coefficient, mL/ (min*cm in the side of test block2)；
Ooze contributive rate, % in γ --- side；
P --- constant water pressure, MPa；
t1/t2--- dynamic Water hydraulic static pressure loading pattern, t1It is hydraulic pressure pressing time, t2It is venting duration, in terms of s；
V1--- straight water percolating capacity, mL；
V2--- lateral seepage quantity, mL；
T --- the infiltration time, min；
δ1--- area conversion coefficient, equal to S1/S2, S1It is the actual infiltration area π D of instrument2/ 4, S2For codes and standards seep water
Area 176.7cm2。
Claims (8)
1. bituminous paving infiltration detection means, including the support frame (13) that can provide mounting platform are oozed in a kind of dynamic anti-side of water pressurization
And infiltration groove (6) above support frame (13), connect with infiltration groove (6) by feed pipe water tank (5), by adding
Air pipe with infiltration groove (6) connect air pump (1), the water supply control valve (4) on feed pipe, installed in pressurize tracheae on
The controller (18) that is electrically connected with water supply control valve (4) and pneumatic control valve (3) of pneumatic control valve (3), controller (18) with
Computer (19) is connected；It is characterized in that：It is provided with support frame (13) for compressing test block and being located at test block respectively
The pressurization top board (7) of top and bottom and pressurization base plate (9), by reinforcing screw rod between pressurization top board (7) and pressurization base plate (9)
(8) connect, infiltration groove (6) is arranged in pressurization top board (7), be machined with permeable hole in the middle part of pressurization top board (7) and pass through
Infiltration cavity (a) that permeable hole is connected with infiltration groove (6) bottom, spilled water hole is machined with the middle part of pressurization base plate (9), is being sluiced
The periphery in hole is machined with side and oozes water leg, and side is oozed water leg and oozes collector pipe (10) by side the measuring cup that catchments (11) is oozed with side and connects,
Be provided with below pressurization base plate (9) it is relative with spilled water hole it is straight ooze collector pipe (14), and by directly oozing collector pipe (14)
Connected with directly the measuring cup that catchments (15) is oozed；
Pressure sensor (2) is provided with above-mentioned infiltration groove (6), collector pipe (14) is oozed and side is oozed on the measuring cup that catchments (11) straight
Level sensor is respectively arranged with, pressure sensor (2) and level sensor are connected by data wire with computer (19).
2. bituminous paving infiltration detection means is oozed in the dynamic anti-side of water pressurization according to claim 1, it is characterised in that：It is described to ooze
The ratio between the diameter D of water cavity and diameter d of test block is 0.8~0.9.
3. bituminous paving infiltration detection means is oozed in the dynamic anti-side of water pressurization according to claim 1, it is characterised in that：The side
It is the annular groove that a section is triangle to ooze water leg, and groove internal diameter is equal with the diameter d of test block, and bottom land is downward from inside to outside
Incline.
4. bituminous paving infiltration detection means is oozed in the dynamic anti-side of water pressurization according to claim 3, it is characterised in that：The side
The bottom land and horizontal plane for oozing water leg form 30~60 ° of angles.
5. bituminous paving infiltration detection means is oozed in the dynamic anti-side of water pressurization according to claim 4, it is characterised in that：The side
Ooze the cylindrical side wall and horizontal plane or outward-dipping of water leg.
6. bituminous paving infiltration detection means is oozed in the dynamic anti-side of water pressurization according to claim 1, it is characterised in that：In pressurization
The position contacted with test block periphery on top board (7) and pressurization base plate (9) is provided with O-ring seals.
7. bituminous paving infiltration detection means is oozed in the anti-side of dynamic water pressurization according to any one of claim 1~6, and its feature exists
In：The test block is Bituminous Pavement drill core core sample gained or standard asphalt compound marshal piece.
8. a kind of dynamic water with described in claim 1 anti-side of pressurizeing is oozed the bituminous paving bituminous paving that detection means realizes that seeps water and is oozed
Water detection method, it is characterised in that comprise the steps of：
(1) test block is fixed between pressurization top board (7) and pressurization base plate (9) by reinforcing screw rod (8) pressurization, opens and supply water
Control valve (4), to water is filled in infiltration groove (6), closes water supply control valve (4), opens pneumatic control valve (3), makes infiltration groove (6)
Interior formation pressure (hydraulic) water, by pressure sensor (2) the Real-time Collection hydraulic signal in infiltration groove (6) and feeds back to controller (18),
Until the hydraulic pressure in infiltration groove (6) reaches setting value P for 0.7~1.0MPa, kept for constant pressure persistent pressure time t1For 0.1~
0.5s, opens water supply control valve (4) afterwards, closes pneumatic control valve (3), and the water under high pressure in infiltration groove (6) can countercurrently through supplying water
Control valve (4), into water tank (5), makes the pressure (hydraulic) water pressure release in infiltration groove (6), duration t2It is 2~4s；
(2) pressurization and pressure discharge operations are repeated, the pressure (hydraulic) water of infiltration groove (6) is formed the dynamic water pattern of pressure of pulsed, by permeable
Hole is permeated downwards full of infiltration cavity (a) from the upper end of test block, and it is 1~3min persistently to move water pressurization t, and a part of water is erected
Straight downward, the spilled water hole of pressurized base plate (9) flows downward, and through directly oozing collector pipe (14) water conservancy diversion, is directly oozing the measuring cup that catchments (15)
Middle collection；, there is side and ooze in another part water bottom horizontal flow sheet under pressure, collector pipe (10) is oozed through side from the sidepiece of test block
Water conservancy diversion, collects in the measuring cup that catchments (11) is oozed in side；Directly ooze the level sensor that the measuring cup that catchments (15) and side are oozed in the measuring cup that catchments (11)
Water level information is fed back to computer (19) by device, is further processed by computer (19)；
(3) straight under hydraulic pressure P for calculating the test block according to following formula oozes coefficient C1Coefficient C is oozed with side2Contributive rate is oozed with side
γ,
Wherein, C1(P, t1/t2) --- the straight of test block oozes coefficient, mL/ (min*cm2)；
C2(P, t1/t2) --- ooze coefficient, mL/ (min*cm in the side of test block2)；
Ooze contributive rate, % in γ --- side；
P --- constant water pressure, MPa；
t1/t2--- dynamic Water hydraulic static pressure loading pattern, t1It is hydraulic pressure pressing time, t2It is venting duration, in terms of s；
V1--- straight water percolating capacity, mL；
V2--- lateral seepage quantity, mL；
T --- the infiltration time, min；
δ1--- area conversion coefficient, equal to S1/S2, S1It is actual infiltration area π D2/ 4, S2It is codes and standards infiltration area
176.7cm2。
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| CN201710025448.2A CN106769775B (en) | 2017-01-13 | 2017-01-13 | Device and method for detecting water seepage of side seepage-preventing asphalt pavement under dynamic water pressurization |
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| CN201710025448.2A CN106769775B (en) | 2017-01-13 | 2017-01-13 | Device and method for detecting water seepage of side seepage-preventing asphalt pavement under dynamic water pressurization |
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