CN205749236U - The oblique shear test device of bituminous paving interlayer anti-shear performance - Google Patents
The oblique shear test device of bituminous paving interlayer anti-shear performance Download PDFInfo
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- CN205749236U CN205749236U CN201620387316.5U CN201620387316U CN205749236U CN 205749236 U CN205749236 U CN 205749236U CN 201620387316 U CN201620387316 U CN 201620387316U CN 205749236 U CN205749236 U CN 205749236U
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Abstract
The oblique shear test device of bituminous paving interlayer anti-shear performance, temperature sensor (14) is connected with temperature indicator (16)；Temperature indicator (16) is connected with temperature detect switch (TDS) (15)；The pipeline (4) that colds and heat succeed each other is connected with air compressor (17) and temperature detect switch (TDS) (15)；Material Testing Machine includes frame (8), electric controling switch (3), actuating unit, number adopts instrument (12), elevating lever (5), arch brace (6), press rods (9), crossbeam (13), pressure transducer, displacement transducer (11), elevating lever (5) through base (2) and is connected with actuating unit, arch brace (6) is connected with the upper end of elevating lever (5), press rods (9) connecting cross beam (13) is also arranged on the upside of frame (8), pressure head (10) is connected to the end of press rods (9), pressure transducer is connected with pressure head (10) and adopts instrument (12) by number and is connected to control station (18).
Description
Technical field
This utility model belongs to road engineering technical field, relates to bituminous paving interlayer anti-shear performance oblique scissor test skill
Art.
Background technology
In recent years, growing traffic infrastructure plays an important role in economic development.High-grade highway
Quickly expand and make transportation more quick, convenient, and bituminous paving is owing to having many advantages in China Higher level
Highway Pavement Structures occupies leading position.
Along with the canalization day by day of the volume of traffic, heavy duty, the increase of overload and traffic, many roads are open to traffic 1 ~ 2 after building up
Just occur in that serious cutting slippage due to road surface inter-layer shearing strength deficiency, gather around bag and U-shaped in year the most shorter time
The diseases such as crack, not only reduce the serviceability of road, and cause huge economic loss to road construction and maintenance.
Therefore, study bituminous paving interlayer anti-shear performance, significant to bituminous pavement design and construction.
At present, be also formed without unified specification in China's interlayer shear-strength test method, major part shearing equipment all in accordance with
Oneself problem is designed.The conventional examination such as main persevering high shear test, uniaxial penetration test, triaxial test and direct shear test
Proved recipe method.These test methods are owing to experimental condition controllability is low, result of the test comparability poor and tests test specimen stress and reality
Border surface conditions does not corresponds and is not easy to engineering and promotes.
Summary of the invention
The purpose of this utility model is to provide a kind of bituminous paving oblique shear test device of interlayer anti-shear performance.
This utility model is the bituminous paving oblique shear test device of interlayer anti-shear performance, including temperature control device, material
Testing machine, bevel shearing machine structure 7 and control station 18, temperature control device includes temperature control box 1, temp control indicator 16, temperature detect switch (TDS) 15, temperature
Degree sensor 14, air compressor 17 and the pipeline 4 that colds and heat succeed each other, upper wall in temperature control box 1 is fixed in temperature sensor 14, with temperature control
Temperature indicator 16 outside case 1 is connected；Temperature indicator 16 is connected with temperature detect switch (TDS) 15；The pipeline 4 that colds and heat succeed each other is fixed on temperature control
Left and right sidewall being connected with air compressor 17 and temperature detect switch (TDS) 15 in case 1；Material Testing Machine is positioned in temperature control box 1, material
Testing machine includes that frame 8, electric controling switch 3, the actuating unit being placed in base 2, number adopt instrument 12, elevating lever 5, arch brace
6, press rods 9, crossbeam 13, the pressure transducer being connected on pressure head 10, displacement transducer 11, described actuating unit connects number and adopts instrument
12 and be connected with control station 18, electric controling switch 3 is arranged on the outside of base 2 and is connected with actuating unit；Described elevating lever 5
Through base 2 and being connected with actuating unit, arch brace 6 is connected with the upper end of elevating lever 5, actuating unit provide the pressure of power
Power bar 9 connecting cross beam 13 is also arranged on the upside of frame 8, and corresponding with the position of arch brace 6, and pressure head 10 is connected to pressure
The end of bar 9, pressure transducer is connected with pressure head 10 and passes through number and adopts instrument 12 and be connected to control station 18；Displacement transducer 11 is with upper
Portion's shearing clamp 23 is connected and passes through number and adopts instrument 12 and be connected to control station 18, and bevel shearing machine structure 7 includes shearing clamp 23, down cut
Bolt 22 fixed by fixture 21, light circle fine steel rib rod 20, backing plate 19, test specimen, and upper shearing clamp 23 is by bolt 27 with pressure head 10 even
Connect, and upper shearing clamp 23 is fixing, down cut fixture 21 can be movable.
Of the present utility model have the beneficial effect that device simple and feasible, easy to operate, just with popularization, asphalt surface course can be measured
Shearing strength at intersection shearing stress, can directly react test specimen shear breakage situation.Test can preferably be simulated bituminous paving interlayer and be sheared broken
Bad, this device is significant with construction to research bituminous paving interlayer anti-shear performance and bituminous pavement design.
Accompanying drawing explanation
Describe more of the present utility model being embodied as, ability the most by way of example, and not by way of limitation in detail
Field technique personnel are it should be understood that what rear accompanying drawing was not necessarily drawn to scale.
Fig. 1 is the structural representation of this utility model device, and Fig. 2 is tiltedly to cut the structural representation that device assembles, and Fig. 3 is examination
The structural representation of part, Fig. 4 is the front view in the three-view diagram of upper shearing clamp, and Fig. 5 is in the three-view diagram of upper shearing clamp
For left view, Fig. 6 be in the three-view diagram of upper shearing clamp for top view, Fig. 7 is that the master in the three-view diagram of down cut fixture regards
Figure, Fig. 8 is the left view in the three-view diagram of down cut fixture, and Fig. 9 is the top view in the three-view diagram of down cut fixture.
Reference and correspondence are entitled: temperature control box 1, base 2, electric controling switch 3, cold and heat succeed each other pipeline 4, elevating lever
5, arch brace 6, bevel shearing machine structure 7, frame 8, press rods 9, pressure head 10, displacement transducer 11, number adopts instrument 12, crossbeam 13, temperature
Sensor 14, temperature detect switch (TDS) 15, temp control indicator 16, air compressor 17, control station 18, backing plate 19, light circle fine steel rib rod 20,
Down cut fixture 21, test specimen fixes bolt 22, upper shearing clamp 23, lower floor's test specimen 24, upper strata test specimen 25, adhesion coating 26, bolt 27.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 shows, this utility model is the bituminous paving oblique shear test device of interlayer anti-shear performance, including
Temperature control device, Material Testing Machine, bevel shearing machine structure 7 and control station 18, temperature control device includes that temperature control box 1, temperature control show
Device 16, temperature detect switch (TDS) 15, temperature sensor 14, air compressor 17 and the pipeline 4 that colds and heat succeed each other, temperature is fixed in temperature sensor 14
Control case 1 in upper wall, with temperature control box 1 outside temperature indicator 16 be connected；Temperature indicator 16 is connected with temperature detect switch (TDS) 15；Cold and hot friendship
Left and right sidewall being connected with air compressor 17 and temperature detect switch (TDS) 15 in being fixed on temperature control box 1 for pipeline 4；Material Testing Machine is put
Being placed in temperature control box 1, Material Testing Machine includes that frame 8, electric controling switch 3, the actuating unit being placed in base 2, number adopt instrument
12, elevating lever 5, arch brace 6, press rods 9, crossbeam 13, the pressure transducer being connected on pressure head 10, displacement transducer 11, institute
Stating actuating unit connection number adopt instrument 12 and be connected with control station 18, electric controling switch 3 is arranged on outside and the power of base 2
Mechanism connects；Described elevating lever 5 through base 2 and is connected with actuating unit, and arch brace 6 is connected with the upper end of elevating lever 5, by
Actuating unit provides press rods 9 connecting cross beam 13 of power and is arranged on the upside of frame 8, and with the position phase of arch brace 6
Correspondence, pressure head 10 is connected to the end of press rods 9, and pressure transducer is connected with pressure head 10 and passes through several instrument 12 of adopting and is connected to control
Platform 18；Displacement transducer 11 is connected with top shearing clamp 23 and passes through number and adopts instrument 12 and be connected to control station 18, and bevel shearing machine structure 7 wraps
Include shearing clamp 23, down cut fixture 21, light circle fine steel rib rod 20, backing plate 19, test specimen fix bolt 22, upper shearing clamp 23
It is connected with pressure head 10 by bolt 27, and upper shearing clamp 23 is fixing, down cut fixture 21 can be movable.
Described temperature control device is circulation electric controlling organization, and temperature controlling range is-40 DEG C ~ 60 DEG C, certainty of measurement
For ± 0.1 DEG C.
This utility model can realize applying vertical load by pressure head 10PWhile, test specimen can be simultaneously by tangential lotus
Load effect, vertical load can apply maximum range is 50kN, rate of loading can be controlled in 0.1mm/min ~ 50mm/min scope.
Described upper shearing clamp 23 and down cut fixture 21 are pair-wise combination work, can need processing according to actual experiment
Become the shearing clamp with the horizontal different inclination angle, can complete arbitrarily to be not more than the oblique scissor test at 90 ° of inclination angles the most exactly.
Described light circle fine steel rib rod 20 scribbles lubricating oil when testing.
Operation principle of the present utility model is as follows: in order to simulate bituminous pavement paving forming technique under practice of construction state,
Wheel milling process is used to carry out the molding of test block.Lower floor's test specimen rut plate of first molding 300 × 300 × 50mm during shaping test piece.Treat
About 24h after lower floor's rut sheet metal forming, removes its surface irregularities and spreads paving sticking layer oil, then overlaying upper strata asphalt mixture paving course
300×300×50mm.Form removal after sufficiently cool about 24h, the most on-demand Rock cutting after mixed structure rut plate specimen molding
Machine cuts into the cuboid test specimen of 120 × 100 × 100mm.When testing, first connected tiltedly cutting device by bolt 27
In Material Testing Machine, and the test specimen made is put into set the temperature control box 1 of test temperature and be incubated more than 4h, make fixture and examination
Part temperature reaches test temperature, is secondly assemblied on shearing clamp by test specimen according to Fig. 2, adjusts the position of elevating lever 5, and with trying
Part is fixed bolt 22 and is fixed test specimen, makes test specimen not slide, and then sets test parameters, carries out oblique scissor test, and test data leads to
Cross control station 18 microcomputer to control automatically to gather.
By pressure head 10, load transmission is added to test specimen, the maximum perpendicular load P when control station 18 obtains interlaminar failure,
Shear strength is calculated according to formula (1).
(1)；
τ is the shear strength (MPa) of tack coat；
P is maximum perpendicular load (kN)；
θ is test specimen inclination angle (°)；
A is the test specimen section of shear (mm2).
It is placed with light circle fine steel rib rod 20 between backing plate 19 and down cut fixture 21, bottom surface can be reduced and rub to result of the test
Impact.
This utility model can complete the oblique of no more than 90 ° of inclination angles by processing the shearing clamp of differing tilt angles
Scissor test.
This utility model not only performs temperature, shearing inclination, gradation types, interface processing situation, shear rate list
The oblique scissor test of factor, and the oblique scissor test under the influence of Multifactor Combination can also be completed.
Test sample dimensions of the present utility model is the cuboid test specimen of 120 × 100 × 100mm.
In sum, this utility model, by processing the shearing clamp of differing tilt angles, can complete different shearing inclination
Oblique scissor test.
This utility model not only performs temperature, shearing inclination, gradation types, interface processing situation, shear rate list
The oblique scissor test of factor, and the oblique scissor test under the influence of Multifactor Combination can also be completed.
Pressure applied is passed to upper shearing clamp by pressure head by this utility model, by upper shearing clamp and under cut
Cut fixture jointly to act on, by cuboid asphalt-bitumen mixture specimen, asphalt-semi-rigid sub-base material examination
Part tiltedly breaks bad, and test specimen can be made to form obvious shear breakage, by analyzing oblique scissor test data, and available asphalt layer
Between shear strength.
Claims (3)
1. the oblique shear test device of bituminous paving interlayer anti-shear performance, including temperature control device, Material Testing Machine, bevel shearing machine structure
(7) and control station (18), it is characterised in that temperature control device includes temperature control box (1), temp control indicator (16), temperature detect switch (TDS)
(15), temperature sensor (14), air compressor (17) and the pipeline that colds and heat succeed each other (4), temperature control is fixed in temperature sensor (14)
Case (1) interior upper wall, is connected with temperature control box (1) temperature indicator (16) outward；Temperature indicator (16) and temperature detect switch (TDS) (15) phase
Even；The pipeline (4) that colds and heat succeed each other be fixed in temperature control box (1) left and right sidewall and with air compressor (17) and temperature detect switch (TDS) (15)
It is connected；Material Testing Machine is positioned in temperature control box (1), and Material Testing Machine includes frame (8), electric controling switch (3), is placed in the end
Actuating unit in seat (2), number are adopted instrument (12), elevating lever (5), arch brace (6), press rods (9), crossbeam (13), are connected to pressure
Head (10) on pressure transducer, displacement transducer (11), described actuating unit connect number adopt instrument (12) and with control station (18)
Being connected, electric controling switch (3) is arranged on the outside of base (2) and is connected with actuating unit；Described elevating lever (5) passes base
(2) and with actuating unit being connected, arch brace (6) is connected with the upper end of elevating lever (5), actuating unit provide the pressure of power
Bar (9) connecting cross beam (13) is also arranged on the upside of frame (8), and corresponding with the position of arch brace (6), and pressure head (10) is even
Being connected on the end of press rods (9), pressure transducer is connected with pressure head (10) and adopts instrument (12) by number and is connected to control station (18)；
Displacement transducer (11) is connected with top shearing clamp (23) and adopts instrument (12) by number and is connected to control station (18), bevel shearing machine structure
(7) include that bolt fixed by shearing clamp (23), down cut fixture (21), light circle fine steel rib rod (20), backing plate (19), test specimen
(22), upper shearing clamp (23) is connected with pressure head (10) by bolt (27), and upper shearing clamp (23) is fixing, down cut fixture
(21) can be movable；Described temperature control device is circulation electric controlling organization, and temperature controlling range is-40 DEG C ~ 60 DEG C, measures
Precision is ± 0.1 DEG C.
The bituminous paving oblique shear test device of interlayer anti-shear performance the most according to claim 1, it is characterised in that: under described
Being lined with light circle fine steel rib rod (20) between shearing clamp (21) and backing plate (19), backing plate (19) is placed on arch brace (6).
The bituminous paving oblique shear test device of interlayer anti-shear performance the most according to claim 1, it is characterised in that: described pressure
Head (10) applies vertical loadPWhile, test specimen is simultaneously by tangential loading effect, and the maximum range that vertical load can apply is
50kN, rate of loading can be controlled in 0.1mm/min ~ 50mm/min scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620387316.5U CN205749236U (en) | 2016-05-04 | 2016-05-04 | The oblique shear test device of bituminous paving interlayer anti-shear performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620387316.5U CN205749236U (en) | 2016-05-04 | 2016-05-04 | The oblique shear test device of bituminous paving interlayer anti-shear performance |
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| Publication Number | Publication Date |
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| CN205749236U true CN205749236U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620387316.5U Active CN205749236U (en) | 2016-05-04 | 2016-05-04 | The oblique shear test device of bituminous paving interlayer anti-shear performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684157A (en) * | 2020-11-30 | 2021-04-20 | 重庆大学 | Asphalt pavement adhesive layer performance testing device |
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2016
- 2016-05-04 CN CN201620387316.5U patent/CN205749236U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112684157A (en) * | 2020-11-30 | 2021-04-20 | 重庆大学 | Asphalt pavement adhesive layer performance testing device |
| CN112684157B (en) * | 2020-11-30 | 2023-09-22 | 重庆大学 | Asphalt pavement adhesive layer performance testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170615 Address after: 730000 No. 333, Pingliang Road, Lanzhou, Gansu Patentee after: Gansu 7th Construction Group Co., Ltd. Address before: 730050 Lanzhou City, Gansu Province Lan Ping, No. 287 Co-patentee before: Gansu 7th Construction Group Co., Ltd. Patentee before: Lanzhou University Of Technology |