CN202770709U - Double-faced sliding shearing tester of asphalt mixture - Google Patents
Double-faced sliding shearing tester of asphalt mixture Download PDFInfo
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- CN202770709U CN202770709U CN 201220421499 CN201220421499U CN202770709U CN 202770709 U CN202770709 U CN 202770709U CN 201220421499 CN201220421499 CN 201220421499 CN 201220421499 U CN201220421499 U CN 201220421499U CN 202770709 U CN202770709 U CN 202770709U
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- arc column
- circular arc
- column casing
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- top cover
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Abstract
The utility model discloses a double-faced sliding shearing tester of asphalt mixture. The double-faced sliding shearing tester comprises a first arc column tube, a second arc column tube, a middle sliding member and a base, wherein a first top cover and a middle plate are arranged on the first arc column tube, and the left side of the first arc column tube is fixed on the base through a first fixed stand column; the second arc column tube is symmetrical to the first arc column tube, the right side of the second arc column tube is fixed on a second fixed stand column which is installed on a sliding groove, the sliding groove is embedded into the base for installation, and the upper end of the sliding groove is on the same level with the upper surface of the base; and the middle sliding member is provided with a top cover and a base plate to enclose the upper portion and the lower portion, the distance between the top cover and the base plate is the same as that between the first top cover and the middle plate, and the middle sliding member is installed between the first arc column tube and the second arc column tube. The double-faced sliding shearing tester is easy to detach, capable of being used repeatedly, low in testing cost, and capable of accurately stimulating radial sliding motion of the asphalt mixture under the load effect and testing reliable and actual testing data.
Description
Technical field
The utility model belongs to the Communication and Transportation Engineering field, relates to the test apparatus that a kind of asphalt mineral aggregate slip characteristic is estimated.
Background technology
Bituminous pavement is the form of mainly mating formation of high grade highway pavement, and the highway of China more than 90% adopts bituminous pavement.Yet China's asphalt pavement rut disease is quite serious, serious threat Pavement Condition and traffic safety.Although the factor such as high temperature, overload is to cause the major reason of pavement disease, the mechanical property of ground surface material own can not be ignored, and it is unscientific only ascribing pavement disease some odjective cause such as to weather, load.From the angle of ground surface material, the mechanism of action and the fine sight mechanical behavior of further investigation ground surface material, and then the design level of raising asphalt solve pavement disease, and this is the problem in the urgent need to causing that the road engineering researchist payes attention to.
For typical means of particulate material, the macromechanics of asphalt response is contact between mineral aggregate and the external manifestation of interface sliding behavior.The permanent strain of bituminous pavement under load is the result of mineral aggregate interface sliding distortion accumulation to a great extent.For a long time, the road researcher biases toward the engineering Application Research of pavement structure and material, and the interface sliding behavior between the asphalt mineral aggregate is not caused enough attention.At present, at home, still do not have to reflect and to simulate test unit and the test method of asphalt mineral aggregate slippage behavior, this has restricted the road researcher greatly from the research to the asphalt distortion of material angle and fine sight mechanical behavior angle.Thereby, extremely need to develop a kind of experimental provision that can reflect and simulate asphalt mineral aggregate slippage behavior at present, so that the researcher makes further laboratory study and theoretical analysis to the asphalt slip characteristic.
Summary of the invention
For the deficiency that prior art exists, the purpose of this utility model is, accurately asphalt two-sided slip shearing test apparatus of a kind of simple in structure, easy to operate, measurement data is provided.
In order to realize above-mentioned technical assignment, the utility model adopts following technical scheme to be achieved:
A kind of asphalt two-sided slip shearing test apparatus, comprise the first circular arc column casing, the second circular arc column casing, middle sliding component and base, the device end face that the first circular arc column casing, the second circular arc column casing and middle sliding component three assembly is a complete disc, the first circular arc column casing is provided with the first top cover and intermediate plate, and the left side adopts the first vertical columns to be fixed on the base; The structural symmetry of the second circular arc column casing and the first circular arc column casing, right side are fixed on the second vertical columns, and the second vertical columns is installed on the chute, and installation and upper end are concordant with base upper surface among the chute embedding base; Middle sliding component is provided with top cover and base plate seals up and down, and the distance between top cover and the base plate equals the first top cover of the first circular arc column casing and the distance between the intermediate plate, and middle sliding component is installed between the first circular arc column casing and the second circular arc column casing.
The utility model also has following technical characterstic:
The sliding component top cover is provided with the pressurization hole that does not connect in the middle of described, is respectively equipped with smooth interior wedge mouth on four inclines.
Be respectively equipped with smooth outer wedge mouth on described the first circular arc column casing and the second circular arc column casing two inclines separately, and the first top cover arrives the distance of base less than intermediate plate to the distance of intermediate plate.
Described the second vertical columns adopts its position on chute of wedge locking.
Described voussoir is that the lateral section is rectangular bar blocks, and its height will be higher than the height of chute.
The utility model dismounting is simple, can reuse, and can take full advantage of the existing instrument of testing laboratory, and experimentation cost is low, and test effect is good, is conducive to universal use the in the actual road test chamber.Can simulate accurately the two-sided slip behavior of asphalt under load action, determine true and reliable test data.The most important innovation of the utility model is exactly to simulate completely the process of asphalt mineral aggregate slippage, and can overcome such as test specimen and do sth. in advance shear failure, and rupture surface waits the interference of other bad experimental phenomenas and factor in a jumble.This be because the utility model to assemble as a whole rear whole superstructure be an enclosed construction, and only allow test specimen under pressure along specific track slippage, this certain tracks i.e. middle part member combines with the inside and outside contract mouth of left and right sides parts and two siding tracks that form.When so in the test marshal piece being placed in the cylindrical tube on top of instrument, test specimen can only be along the track slippage of member both sides, middle part, namely only form two slipping planes, its downward slip can until the center section test specimen fully with about part break away from, so just can get rid of the impact of the factors such as test specimen destroys ahead of time, rupture surface is uncertain, slip characteristic is not remarkable, thereby can well simulate the slip characteristic of asphalt mineral aggregate.
Description of drawings
Fig. 1 is the one-piece construction schematic diagram of asphalt two-sided slip shearing test apparatus.
Fig. 2 is the plan structure schematic diagram of asphalt two-sided slip shearing test apparatus.
Fig. 3 is the structural representation of the first circular arc column casing.
Wherein the implication of each label has: 1-the first circular arc column casing, sliding component in the middle of 2-the second circular arc column casing, 3-, 4-the first vertical columns, 5-the second vertical columns, 6-chute, 7-base, the 8-hole of pressurizeing, the outer wedge mouth of 9-, wedge mouth in the 10-, 11-the first top cover, 12-intermediate plate, 13-incline.
Below in conjunction with drawings and Examples particular content of the present utility model is described in more detail.
Embodiment
Below provide specific embodiment of the utility model, need to prove that the utility model is not limited to following specific embodiment, all equivalents of doing on present techniques scheme basis all fall into protection domain of the present utility model.
Such as Fig. 1, Fig. 2 and shown in Figure 3, this test instrument comprises the first circular arc column casing 1, the second circular arc column casing 2, middle sliding component 3 and base 7, be provided with the first top cover 11 and intermediate plate 12 on the first circular arc column casing 1, the structural symmetry of the second circular arc column casing 2 and the first circular arc column casing 1, the first vertical columns 4 is fixed on the first circular arc column casing 1 on the base 7, the second vertical columns 4 and the second circular arc column casing 2 are fixing, be installed on the chute 6, be provided with the pressurization hole 8 that does not connect on middle sliding component 3 top covers, the interior wedge mouth 10 on the middle sliding component 3 respectively with the first circular arc column casing 1 and the second circular arc column casing 2 inclines 13 on outer wedge mouth 9 cooperate installation.The material of these all parts of test instrument is steel.
In concrete test operation, the pressure that we need to provide test to need to the utility model by the commonly used asphalt universal testing machine in road test chamber or pressing machine, applying by universal testing machine or pressing machine of pressure is delivered to pressure head, by pressure head act on of the present utility model in the middle of pressurization hole site on the sliding component top cover.Under the effect of pressure, whole downward sliding phenomenon will occur in middle sliding component.Test procedure of the present utility model is as follows:
(1) right circles arc column cylinder 2 is moved to the low order end of chute 6, got the cavity that Marshall right cylinder test specimen (standard specimen: diameter is 101.6mm, highly is 63.5mm) is put into the first circular arc column casing top.
(2) sliding component 3 in the middle of hand-held is enclosed within on the marshal piece that leaks outside it, and so that itself and the first circular arc column casing 1 be close together by wedge mouth card.
(3) promote the second circular arc column casing, so that will remaining the marshal piece exposed parts, it comprises fully, and match with the wedge mouth of intermediate member, whole test instrument the first half forms a complete right cylinder, voussoir is put into chute 6, lock the position of the second circular arc column casing, so that whole test instrument close installation together.
(4) test instrument of combining vertically is placed on the objective table of universal testing machine, will with sliding component 3 top covers in the middle of the consistent pressure head in pressurization 8 apertures, hole is placed on pressurization hole 8 among.
(5) starting universal testing machine exerts pressure to the test test instrument, carry out the test of asphalt two-sided slip, continue to exert pressure, until the middle sliding component that the part marshal piece is housed under pressure, the downward slippage of rail plate that forms along the surface of contact of both sides wedge mouth, till breaking away from fully with the first circular arc column casing 1 and the second circular arc column casing 2 the first half, stop pressurization.
(6) read from begin to exert pressure middle sliding component 3 and the first circular arc column casing 1 and the second circular arc column casing 2 the first half and break away from force value the whole process fully, be used for follow-up test result analysis.
Claims (5)
1. asphalt two-sided slip shearing test apparatus, comprise the first circular arc column casing (1), the second circular arc column casing (2), middle sliding component (3) and base (7), it is characterized in that, the device end face that the first circular arc column casing (1), the second circular arc column casing (2) and middle sliding component (3) three assembly is a complete disc, the first circular arc column casing (1) is provided with the first top cover (11) and intermediate plate (12), and the left side adopts the first vertical columns (4) to be fixed on the base (7); The structural symmetry of the second circular arc column casing (2) and the first circular arc column casing (1), the right side is fixed on the second vertical columns (5), the second vertical columns (5) is installed on the chute (6), and installation and upper end are concordant with base (7) upper surface among chute (6) the embedding base (7); Middle sliding component (3) is provided with top cover and base plate seals up and down, distance between top cover and the base plate equals first top cover (11) of the first circular arc column casing and the distance between the intermediate plate (12), and middle sliding component (3) is installed between the first circular arc column casing (1) and the second circular arc column casing (2).
2. asphalt two-sided slip shearing test apparatus as claimed in claim 1 is characterized in that, described in the middle of sliding component (3) top cover be provided with the pressurization hole (8) that does not connect, be respectively equipped with smooth interior wedge mouth (10) on four inclines.
3. asphalt two-sided slip shearing test apparatus as claimed in claim 1, it is characterized in that, be respectively equipped with smooth outer wedge mouth (9) on described the first circular arc column casing (1) and the second circular arc column casing (2) two inclines (13) separately, and the first top cover (11) arrives the distance of base (7) less than intermediate plate (12) to the distance of intermediate plate (12).
4. asphalt two-sided slip shearing test apparatus as claimed in claim 1 is characterized in that, described the second vertical columns (5) adopts its position on chute (6) of wedge locking.
5. asphalt two-sided slip shearing test apparatus as claimed in claim 4 is characterized in that, described voussoir is that the lateral section is rectangular bar blocks, and its height will be higher than the height of chute (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421499 CN202770709U (en) | 2012-08-23 | 2012-08-23 | Double-faced sliding shearing tester of asphalt mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220421499 CN202770709U (en) | 2012-08-23 | 2012-08-23 | Double-faced sliding shearing tester of asphalt mixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770709U true CN202770709U (en) | 2013-03-06 |
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ID=47777273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220421499 Expired - Fee Related CN202770709U (en) | 2012-08-23 | 2012-08-23 | Double-faced sliding shearing tester of asphalt mixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770709U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784550A (en) * | 2016-04-24 | 2016-07-20 | 长安大学 | Granule contact test device and test method |
| CN106644762A (en) * | 2016-12-23 | 2017-05-10 | 大连理工大学 | Double-sided direct shear test device for fiber concrete |
| CN109374434A (en) * | 2018-09-05 | 2019-02-22 | 华北水利水电大学 | Asphalt concrete pavement material shearing performance test device |
| CN109781528A (en) * | 2019-02-18 | 2019-05-21 | 长安大学 | The device and its application method of swollen effect are cut in test asphalt transition process |
-
2012
- 2012-08-23 CN CN 201220421499 patent/CN202770709U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784550A (en) * | 2016-04-24 | 2016-07-20 | 长安大学 | Granule contact test device and test method |
| CN105784550B (en) * | 2016-04-24 | 2018-08-14 | 长安大学 | A kind of particle contact test device and test method |
| CN106644762A (en) * | 2016-12-23 | 2017-05-10 | 大连理工大学 | Double-sided direct shear test device for fiber concrete |
| CN109374434A (en) * | 2018-09-05 | 2019-02-22 | 华北水利水电大学 | Asphalt concrete pavement material shearing performance test device |
| CN109781528A (en) * | 2019-02-18 | 2019-05-21 | 长安大学 | The device and its application method of swollen effect are cut in test asphalt transition process |
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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: 20130306 Termination date: 20150823 |
|
| EXPY | Termination of patent right or utility model |