CN203630026U - Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer - Google Patents
Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer Download PDFInfo
- Publication number
- CN203630026U CN203630026U CN201320744678.1U CN201320744678U CN203630026U CN 203630026 U CN203630026 U CN 203630026U CN 201320744678 U CN201320744678 U CN 201320744678U CN 203630026 U CN203630026 U CN 203630026U
- Authority
- CN
- China
- Prior art keywords
- semi
- test specimen
- horizontal
- type base
- vertical load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a device for measuring connection direct shear resistance between an asphalt surface layer and a semi-rigid base layer. The device comprises a counter-force frame, a test piece base, a vertical load loading device and a horizontal load loading device, wherein at least one part of the test piece base is fixed to the counter-force frame; height of the test piece base corresponds to thickness of a semi-rigid base layer in a test piece; the vertical load loading device comprises a vertical load generating part, a vertical load loading part, a vertical load ejector head and a pressure-bearing plate; the horizontal load loading device comprises a horizontal load generating part, a horizontal load loading part and a horizontal load ejector head; the vertical load generating part is used for applying a vertical pressure being 10-20KN to the test piece through the vertical load loading part, the vertical load ejector head and the pressure-bearing plate; the horizontal load generating device is used for applying a horizontal pressure being 0-50KN to the test piece through the horizontal load loading part and the horizontal load ejector head; and the loading speed of the horizontal pressure is 1mm/min.
Description
Technical field
The utility model relates to a kind of equipment that asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance of evaluating, and particularly relates to the equipment that a kind of measurement asphalt mat of displacement controllable and semi-rigid type base interlayer connect anti-staight scissors performance.
Background technology
For semi-rigid asphalt pavement, guarantee that anti-shear performance good between semi-rigid type base and asphalt mat is very important.If surface layer and basic unit's anti-shear performance are not good, can cause asphalt mat to occur rut, gather around bag, the disease such as crack, passing, greatly shorten the serviceable life of highway.
The anti-shear performance connecting in order to evaluate semi-rigid type base and asphalt mat interlayer, all carry out correlative study both at home and abroad, but, owing to not having clear and definite construction technique normalizing, cause that test method is in disorder to differ, test apparatus is uneven, and these instruments are from During Geotechnical Tests instrument reform mostly, can unqualified movement under horizontal thrust effect, not only meaningless if test produces larger shear displacemant, also can disturb normal reading.The simultaneously also not die trial with asphalt mat bilayer test specimen for moulding semi-rigid type base, utilize often the test block of rolling method forming double-layer, also inconsistent with the size of shear after test block forming, need to polish to it, can cause like this structural plane to slide before shearing, finally cause the accuracy of test to be subject to larger interference.
The information that is disclosed in this utility model background technology part is only intended to deepen the understanding to general background technology of the present utility model, and should not be regarded as admitting or imply that in any form this information structure has been prior art known in those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of equipment that asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance of measuring.This equipment can be simulated feature and the environment for use of asphalt mat and semi-rigid type base interlayer, the double-deck test specimen of the semi-rigid type base of moulding different-thickness and asphalt mat, and by the anti-shear performance of displacement level of control thrust and then evaluation asphalt mat and the connection of semi-rigid type base interlayer.Meanwhile, this equipment both can be for working-yard, also can be for indoor detection.
For achieving the above object, the utility model provides a kind of equipment that asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance of measuring, and it comprises: reaction frame, and it is rigid support; Test specimen base, its at least a portion is fixed to described reaction frame, and the height of this test specimen base is corresponding to the thickness of semi-rigid type base in test specimen; Vertical load charger, it comprises that vertical load generates parts, vertical load loading component, vertical load top and bearing plate; Wherein, described vertical load generates parts and is fixed to described reaction frame, described bearing plate is arranged on the top of test specimen, described vertical load loading component is vertically attached to movably described vertical load and generates parts, the bottom of this vertical load loading component connects described vertical load top, and in use, described vertical load withstands on the center of described bearing plate, thereby applies pressure at right angle to test specimen; And horizontal load charger, it comprises that horizontal load generates parts, horizontal load loading component and horizontal load top; Wherein, described horizontal load loading component along continuous straight runs is connected on described reaction frame slidably, one end of this horizontal load loading component is connected to described horizontal load and generates parts, and the other end of this horizontal load loading component connects described horizontal load top, this horizontal load comes directly towards the shape of the surface of contact contacting with test specimen corresponding to the shape of the outside surface of test specimen; And, on described horizontal load loading component, be provided with horizontal pressure force sensor and horizontal displacement sensors; Wherein, described vertical load generation parts apply the pressure at right angle of 10-20KN to test specimen by vertical load loading component, vertical load top and bearing plate; Described horizontal load generates parts and comes directly towards by horizontal load loading component and horizontal load the horizontal pressure force that test specimen is applied to 0-50KN, and the loading velocity of this horizontal pressure force is 1mm/min.
The equipment that above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance also comprises data acquisition control device and display device; Wherein, described data acquisition control device and described horizontal pressure force sensor and horizontal displacement sensors are electrically connected, and receive the data of described horizontal pressure force sensor and horizontal displacement sensors output; And described data acquisition control device is also electrically connected with described display device, thereby exports after treatment the data that receive to described display device.
The equipment that above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance also comprises the die trial for shaping test piece; Described die trial comprises and can vertical one be split into two semi arches of two, and its both sides two bolts of each welding are also equipped with a connecting rod, for dismounting die trial; Wherein, described die trial also comprises multiple clean steel pads identical with its diameter, by the pad of combination different-thickness, the test specimen of moulding differing heights.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, and described test specimen base comprises Part I and Part II; This Part I is fixed to the bottom of a side of described reaction frame, and the dismountable Part I that is connected to of this Part II, the inner surface configuration of the accommodation section of the test specimen base of this Part I and Part II composition is corresponding to the external surface shape of test specimen.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, described test specimen comprise asphalt mat and semi-rigid type base and be arranged on asphalt mat and semi-rigid type base between interlayer connect measure.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, and described horizontal load comes directly towards the contact site contacting with test specimen in described asphalt mat place.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, and described test specimen is the cylinder specimen of diameter 150mm, and wherein the thickness of semi-rigid type base is 80mm, and the thickness of asphalt mat is 30mm, 40mm, 50mm or 80mm.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, and described horizontal load comes directly towards the semi arch that is shaped as of the surface of contact that contacts with test specimen.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, described horizontal load generates parts and comprises servomotor and speed reduction unit, the input end of the output terminal connection reducer of this servomotor, the output terminal of this speed reduction unit connects described horizontal load loading component, applies the horizontal pressure force of loading velocity as 1mm/min so that described horizontal load is generated to parts.
Above-mentioned measurement asphalt mat and semi-rigid type base interlayer connect in the equipment of anti-staight scissors performance, and it is motor or lifting jack that described vertical load generates parts.
The utility model is taked after above technical scheme, and it has following beneficial effect:
1, equipment of the present utility model can be simulated feature and the environment for use of asphalt mat and semi-rigid type base interlayer, the double-deck test specimen of moulding different-thickness, different attachment material respectively, and the laminating of test specimen and test specimen base is good, guarantees the accuracy of test.
2, in use, test loading procedure is to utilize displacement controlled loading speed to equipment of the present utility model, and can demonstrate by display device the data of stress-time, displacement-time, stress-displacement.
3, equipment of the present utility model is relatively light, and each composition system and device all works alone, convenient maintenance; And dismounting is flexibly, be convenient to mobile carrying, therefore can take into account indoor and outdoors simultaneously and detect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A-A diagrammatic cross-section of Fig. 1.
Embodiment
Shown in accompanying drawing, the utility model provides a kind of equipment that asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance of measuring, and it can comprise:
Reaction frame 1, this reaction frame 1 is rigid support, reaction frame is mainly used to fixing staight scissors test specimen, and effect counter-force when staight scissors are provided;
Test specimen base 2, its at least a portion is fixed to reaction frame 1, and the height of this test specimen base 2 is corresponding to the thickness of semi-rigid type base in test specimen 100;
Vertical load charger 4, it comprises that vertical load generates parts 41, vertical load loading component 42, vertical load top 43 and bearing plate 44; Wherein, vertical load generates parts 41 and is fixed to reaction frame 1, bearing plate 44 is arranged on the top of test specimen 100, vertical load loading component 42 is vertically attached to movably vertical load and generates parts 41, the bottom of this vertical load loading component 42 connects vertical load top 43, and in use, vertical load top 43 withstands on the center of bearing plate 44, thereby applies pressure at right angle to test specimen 100;
Horizontal load charger 5, it comprises that horizontal load generates parts 51, horizontal load loading component 52 and horizontal load top 53; Wherein, horizontal load loading component 52 along continuous straight runs are connected on reaction frame 1 slidably, one end of this horizontal load loading component 52 is connected to horizontal load and generates parts 51, and the other end of this horizontal load loading component 52 connects horizontal load top 53, the shape of these horizontal load top 53 surface of contact that contact with test specimen 100 is corresponding to the shape of the outside surface of test specimen 100; And, on horizontal load loading component 52, be provided with horizontal pressure force sensor and horizontal displacement sensors (not shown);
Wherein, vertical load generation parts 41 apply the pressure at right angle (being converted to pressure is 0.6～1.1MPa) of 10-20KN to test specimen 100 by vertical load loading component 42, vertical load top 43 and bearing plate 44; Horizontal load generation parts 51 apply the horizontal pressure force of 0-50KN by horizontal load loading component 52 and 53 pairs of tops of horizontal load test specimens 100, and the loading velocity of this horizontal pressure force is 1mm/min.
In the utility model, the equipment that measurement asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance can also comprise data acquisition control device and display device (not shown); Wherein, data acquisition control device and horizontal pressure force sensor and horizontal displacement sensors are electrically connected, and receive the data of horizontal pressure force sensor and horizontal displacement sensors output; And data acquisition control device is also electrically connected with display device, thereby exports after treatment the data that receive to display device.
Data acquisition control device can be realized by the conventional technological means of those skilled in the art, due to horizontal pressure force sensor sensing be the data of horizontal pressure force and horizontal displacement sensors sensing be the data of displacement, therefore, data acquisition control device data after treatment can be the relations (being stress time curve) of horizontal pressure force and time, or the relation of displacement and time (being displacement-time curve), or the relation of horizontal pressure force and displacement (being stress-displacement curve).In addition these data that, output to display device also can store or print; And the demonstration of these data can be real-time.
In the utility model, the equipment that measurement asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance can also comprise the die trial (not shown) for shaping test piece.Described die trial can comprise and can vertical one be split into two semi arches of two, and its both sides two bolts of each welding are also equipped with a connecting rod, for dismounting die trial; Wherein, described die trial also comprises multiple clean steel pads identical with its diameter, by the pad of combination different-thickness, and test specimen that can moulding differing heights.
In an embodiment of the present utility model, the thickness of this die trial is 15mm, and diameter is 150mm, is highly 240mm, and die trial adopts clean steel to make.In order to control the thickness of semi-rigid type base and asphalt mat, it is 150mm that supporting this mould is made diameter, and thickness is respectively the clean steel pad of 30mm, 40mm, 50mm, by the pad of combination different-thickness, and test specimen that can moulding differing heights.For example, test specimen is the cylinder specimen of diameter 150mm, wherein the thickness of semi-rigid type base is 80mm, interlayer connection measure is that emulsified asphalt class, heat are spilt the measures to improve interlayer conditions such as type pitch class, crushed stone sealing class, thickness is in 5mm left and right, in the situation that not increasing pad, the height of whole test specimen is 240mm; And if increase the pad of a 40mm, the height of whole test specimen is 200mm; Or in the case of the increase pad of a 40mm and the pad of a 50mm, the height of whole test specimen is 150mm.Therefore,, in the test specimen of the utility model institute moulding, the thickness of asphalt mat can be 30mm, 40mm, 50mm or 80mm.
In an embodiment of the present utility model, test specimen base 2 can comprise Part I 21 and Part II 22; This Part I 21 is fixed to the bottom of a side of reaction frame 1, and the dismountable Part I 21 that is connected to of this Part II 22, the inner surface configuration of the accommodation section of the test specimen base 2 that this Part I 21 and Part II 22 form is corresponding to the external surface shape of test specimen.That is to say, be in cylindrical situation at test specimen, and the inside surface of the accommodation section of test specimen base 2 also should form corresponding cylindrical shape.
Further, in the utility model, horizontal load generates parts 51 can comprise servomotor and speed reduction unit, the input end of the output terminal connection reducer of this servomotor, the output terminal of this speed reduction unit connects horizontal load loading component 52, applies the horizontal pressure force of loading velocity as 1mm/min so that horizontal load is generated to parts 52.In addition, it can be motor or lifting jack that vertical load generates parts 41, and vertical load generation parts 41 are motor in the embodiment shown in fig. 1.
The use of equipment of the present utility model is described with an instantiation below.
First, use the die trial shaping test piece in the utility model, it can select according to designing requirement the pad (selecting in this example 80mm semi-rigid type base and 40mm asphalt mat) of different-thickness, utilize the semi-rigid type base test specimen that static pressure method moulding 80mm is thick, after finishing, health smears attachment material (crushed stone sealing, every square meter 1.5kg/m on its surface
2heated bitumen, spreads paving 10kg/m again above heated bitumen
29.5mm～13.2mm rubble, average thickness is that 5mm connects measure between left and right), after attachment material is cooling, again test specimen is packed in die trial, utilize static pressure method formable layer asphalt (asphalt mat bed thickness 40mm) test specimen thereon, for subsequent use after the demoulding.
Then, test specimen after moulding is placed in test specimen base, and the Part I of test specimen base is connected with Part II with fastening test specimen, wherein the height of test specimen base should be corresponding to the thickness of semi-rigid type base in test specimen, that is to say, interlayer connects the level height of measure should be on the upper surface of test specimen base, thereby makes test specimen base can not have to interlayer connection measure the acting force of horizontal direction.
Then, utilize vertical load to generate parts and by vertical load loading component and vertical load top, pressure at right angle is applied on bearing plate, and by bearing plate, pressure is applied on the upper surface of test specimen equably.This vertical load generates parts can motor, can be also other the device such as weight stack or lifting jack.In this example, vertical load is 0.7MPa, and this vertical load is mainly used in the pressure of simulated automotive tire road pavement, and the ground connection pressure of doughnut is at 0.6～1.1MPa, and it is more suitable being therefore arranged on 0.7MPa.
After pressure at right angle is stable, open the servomotor of horizontal load charger, and the rotating speed of controlling servomotor is so that the loading velocity of horizontal pressure force is controlled to constant 1mm/min, by horizontal load loading component and horizontal load top, test specimen is applied the horizontal pressure force of this 1mm/min loading velocity.Wherein, described horizontal load comes directly towards the contact site contacting with test specimen in described asphalt mat place, and correspondingly, described horizontal load comes directly towards the semi arch that is shaped as of the surface of contact that contacts with test specimen, this semi arch is corresponding with the shape of columniform test specimen, thereby horizontal pressure force can be applied to equably to the asphalt mat place of test specimen.
In applying horizontal pressure force, utilize the data of data acquisition control device acquisition horizontal pressure force sensor and horizontal displacement sensors, and acquisition and processing related data.
Along with horizontal load charger constantly applies the horizontal pressure force of 1mm/min loading velocity, the horizontal pressure force value that horizontal pressure force sensor records can increase gradually, until while reaching a certain numerical value, semi-rigid type base separates (being that interlayer connection measure was lost efficacy) with asphalt mat, and the horizontal pressure force value that now horizontal pressure force sensor records can decline to a great extent suddenly, this maximal value recording can be for evaluating the anti-shear performance between semi-rigid type base and asphalt mat, and this value is exactly the anti-shearing stress of maximum that interlayer connection measure can bear.
Claims (10)
1. measure the equipment that asphalt mat and semi-rigid type base interlayer connect anti-staight scissors performance, it is characterized in that, comprising:
Reaction frame, it is rigid support;
Test specimen base, its at least a portion is fixed to described reaction frame, and the height of this test specimen base is corresponding to the thickness of semi-rigid type base in test specimen;
Vertical load charger, it comprises that vertical load generates parts, vertical load loading component, vertical load top and bearing plate; Wherein, described vertical load generates parts and is fixed to described reaction frame, described bearing plate is arranged on the top of test specimen, described vertical load loading component is vertically attached to movably described vertical load and generates parts, the bottom of this vertical load loading component connects described vertical load top, and in use, described vertical load withstands on the center of described bearing plate, thereby applies pressure at right angle to test specimen; And
Horizontal load charger, it comprises that horizontal load generates parts, horizontal load loading component and horizontal load top; Wherein, described horizontal load loading component along continuous straight runs is connected on described reaction frame slidably, one end of this horizontal load loading component is connected to described horizontal load and generates parts, and the other end of this horizontal load loading component connects described horizontal load top, this horizontal load comes directly towards the shape of the surface of contact contacting with test specimen corresponding to the shape of the outside surface of test specimen; And, on described horizontal load loading component, be provided with horizontal pressure force sensor and horizontal displacement sensors;
Wherein, described vertical load generation parts apply the pressure at right angle of 10-20KN to test specimen by vertical load loading component, vertical load top and bearing plate; Described horizontal load generates parts and comes directly towards by horizontal load loading component and horizontal load the horizontal pressure force that test specimen is applied to 0-50KN, and the loading velocity of this horizontal pressure force is 1mm/min.
2. measurement asphalt mat according to claim 1 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: also comprise data acquisition control device and display device;
Wherein, described data acquisition control device and described horizontal pressure force sensor and horizontal displacement sensors are electrically connected, and receive the data of described horizontal pressure force sensor and horizontal displacement sensors output; And described data acquisition control device is also electrically connected with described display device, thereby exports after treatment the data that receive to described display device.
3. measurement asphalt mat according to claim 2 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: also comprise the die trial for shaping test piece;
Described die trial comprises and can vertical one be split into two semi arches of two, and its both sides two bolts of each welding are also equipped with a connecting rod, for dismounting die trial; Wherein, described die trial also comprises multiple clean steel pads identical with its diameter, by the pad of combination different-thickness, the test specimen of moulding differing heights.
4. measurement asphalt mat according to claim 1 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: described test specimen base comprises Part I and Part II; This Part I is fixed to the bottom of a side of described reaction frame, and the dismountable Part I that is connected to of this Part II, the inner surface configuration of the accommodation section of the test specimen base of this Part I and Part II composition is corresponding to the external surface shape of test specimen.
5. measurement asphalt mat according to claim 1 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: described test specimen comprise asphalt mat and semi-rigid type base and be arranged on asphalt mat and semi-rigid type base between interlayer connect measure.
6. measurement asphalt mat according to claim 5 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: described horizontal load comes directly towards the contact site contacting with test specimen in described asphalt mat place.
7. measurement asphalt mat according to claim 5 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: described test specimen is the cylinder specimen of diameter 150mm, wherein the thickness of semi-rigid type base is 80mm, and the thickness of asphalt mat is 30mm, 40mm, 50mm or 80mm.
8. measurement asphalt mat according to claim 7 and semi-rigid type base interlayer connect the equipment of anti-staight scissors performance, it is characterized in that: described horizontal load comes directly towards the semi arch that is shaped as of the surface of contact that contacts with test specimen.
9. connect the equipment of anti-staight scissors performance according to the measurement asphalt mat described in claim 1-8 any one and semi-rigid type base interlayer, it is characterized in that: described horizontal load generates parts and comprises servomotor and speed reduction unit, the input end of the output terminal connection reducer of this servomotor, the output terminal of this speed reduction unit connects described horizontal load loading component, applies the horizontal pressure force of loading velocity as 1mm/min so that described horizontal load is generated to parts.
10. the equipment that connects anti-staight scissors performance according to the measurement asphalt mat described in claim 1-8 any one and semi-rigid type base interlayer, is characterized in that: it is motor or lifting jack that described vertical load generates parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744678.1U CN203630026U (en) | 2013-11-21 | 2013-11-21 | Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744678.1U CN203630026U (en) | 2013-11-21 | 2013-11-21 | Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203630026U true CN203630026U (en) | 2014-06-04 |
Family
ID=50816492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320744678.1U Expired - Fee Related CN203630026U (en) | 2013-11-21 | 2013-11-21 | Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203630026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655557A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Equipment for measuring interlamellar jointing direct shear resistance between asphalt surface course and semi-rigid base |
| CN109610276A (en) * | 2018-12-17 | 2019-04-12 | 徐俊 | It a kind of road both sides blocks water band pitch and smears molding machine |
-
2013
- 2013-11-21 CN CN201320744678.1U patent/CN203630026U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104655557A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Equipment for measuring interlamellar jointing direct shear resistance between asphalt surface course and semi-rigid base |
| CN104655557B (en) * | 2013-11-21 | 2018-03-02 | 交通运输部科学研究院 | The equipment that measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer |
| CN109610276A (en) * | 2018-12-17 | 2019-04-12 | 徐俊 | It a kind of road both sides blocks water band pitch and smears molding machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105136587A (en) | Bituminous mixture rutting test device | |
| CN108240965B (en) | Asphalt pavement interlayer bonding strength detection device and detection method thereof | |
| CN106198258B (en) | Rock shear strength size effect testing machine | |
| CN103439190B (en) | Paving steel bridge deck cracking resistance evaluation experimental device | |
| CN203595634U (en) | Multifunctional asphalt pavement durability tester | |
| CN204988883U (en) | Bituminous mixture wheel tracking test device | |
| CN102494962B (en) | Circulating single shaft dynamic load testing device with function of simulating tire load | |
| CN204514733U (en) | A kind of bituminous pavement right cylinder test specimen interlayer pressurization boxshear apparatus | |
| CN203443862U (en) | Bituminous pavement acceleration loading testing machine | |
| CN105699203B (en) | A kind of experimental rig and method for measuring construction material compression strength under confined pressure | |
| CN110006764B (en) | Dynamic traffic load simulation device and method for rock-soil and underground engineering model test | |
| CN107219131B (en) | A kind of asphalt horizontal shear performance test apparatus and method considering local axial compressive force | |
| CN102519812A (en) | Method for evaluating high-temperature stability of asphalt pavement structure or asphalt mixture | |
| CN104502014A (en) | Rack-based braking force detection device and method capable of automatically adjusting automobile axle load | |
| CN112014242B (en) | Three-dimensional strain failure criterion-based asphalt pavement load checking method | |
| CN203587450U (en) | Test instrument for measuring shearing strength of bulk solid material | |
| CN203630026U (en) | Device for measuring connection direct shear resistance between asphalt surface layer and semi-rigid base layer | |
| CN108196039B (en) | Device and method for simulating crack characteristics among broken blocks and influence of crack characteristics on layering | |
| CN203658169U (en) | Semicircle bending strength tester for bituminous mixture | |
| CN205138908U (en) | Novel asphaltic sands shearing test device | |
| CN104655557B (en) | The equipment that measurement asphalt surface course is coupled anti-staight scissors performance with semi-rigid type base interlayer | |
| CN105158092B (en) | Floorings fatigue life test device and test method | |
| CN203502297U (en) | Steel bridge deck pavement anti-cracking performance evaluation testing device | |
| CN104947582A (en) | Intelligent weighing support improved based on bridge plate-type support | |
| CN109374434A (en) | Asphalt concrete pavement material shearing performance test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20141121 |
|
| EXPY | Termination of patent right or utility model |