CN208501452U - A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test - Google Patents
A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test Download PDFInfo
- Publication number
- CN208501452U CN208501452U CN201821064975.0U CN201821064975U CN208501452U CN 208501452 U CN208501452 U CN 208501452U CN 201821064975 U CN201821064975 U CN 201821064975U CN 208501452 U CN208501452 U CN 208501452U
- Authority
- CN
- China
- Prior art keywords
- cushion block
- briquetting
- support base
- asphalt pavement
- semi
- 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
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model is a kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test, which includes pressure rod, briquetting, load control system, cushion block and support base；The lower end of pressure rod connects briquetting, and cushion block is arranged in support base, and cushion block can opposite support base sliding；It is equipped with inclined groove on briquetting and the opposite face of cushion block, the size of two inclined grooves is consistent, and two inclined grooves can fit closely test specimen to be measured, and the shape of two grooves is matched with the shape of test specimen；Support base lower part is fixed in supporting table, and load control system loads on pressure rod；The recessed grain of the briquetting and the recessed grain of cushion block are tilted to same direction, and inclined angle alpha is not more than 59 °.The apparatus structure is simple, and operating method is easy, can accurately simulating semi-rigid Base Asphalt Pavement actual forced status.
Description
Technical field
The utility model belongs to road engineering application field, and it is anti-to be related to a kind of tilting semi-rigid asphalt pavement interlayer
Cut the device of strength test.
Background technique
In recent years, with the increasing that China invests infrastructure construction, mileages of transport route constantly increases.In recent years, adjoint
The rapid development of highway in China construction, highway network constantly improve, and it is most wide that road haulage becomes service range, undertakes fortune
The transport service industry that amount is maximum, Transportation Organization is the most flexible, transport product is the most various.But due to managerial not perfect and
Transport operation interests drive, and automobile overload is the serious problems that China's express highway pavement faces.The reality of highway
Border service life often less than designs the trial period, and the early damage on road surface brings huge loss to society, and causes extensively
Concern, there is an urgent need to improve the durability of road engineering.It is this under the new situation, it is desirable that highway industry walks sustainable development road
Road further increases scientific and technical innovation dynamics, builds Highway Safety, resource-conserving, environmentally friendly road event.
Semi-rigid asphalt pavement is compound using the relatively high crushed rock base course of intensity and bituminous concrete flexible progress,
Semi-rigid type base is as load-carrying members, and pavement cracking is relatively good in performances such as carrying, diffusion loads before, and upper layer primarily serves
Function, this structure type have many advantages, such as that good integrity, driving be comfortable, long service life.Semi-rigid type base asphalt road
Face can sufficiently meet the durability under Heavy Traffic situation, meet the developing direction of China's Supporting Load Pavement Long-life Pavement Structure.
Engineering practice and studies have shown that the main problem of semi-rigid asphalt pavement is interlayer slip and reflection crack.
Although achieving certain achievement to the research of semi-rigid asphalt pavement at present both at home and abroad, but there is certain limitation
Property, it is more to reflection crack research, it is less to interlayer shear Study on Problems.To the interlayer shear of semi-rigid asphalt pavement
The research of energy is mainly based upon traditional Soil Direct Shear or oblique scissor test, and there is presently no evaluation semi-rigid asphalt pavement layers
Between shearing strength simple mechanism and method.Highway in Henan Province office is that research cement concrete overlays extra large cyan layer composite pavement
Copulation state between laminates have developed interlayer shear-strength test device as shown in Figure 1.Former Xian Road Communication Univ. is also to study old water
The copulation state between laminates of mud wheel road surface Laying Asphalt Surface Course composite pavement have developed a set of as shown in Figure 2 more intelligent
LLM shear stress test macro.
Since asphalt is flexible material, there is viscoplasticity and inhomogeneities, therefore the above road surface interlayer shear is real
The size that instrument is tested to Accurate Determining interlaminar shear stress is difficult, therefore improves to testing equipment.
Utility model content
In view of the deficiencies of the prior art, technical problem to be solved by the utility model is to provide a kind of tilting semi-rigids
Property Base Asphalt Pavement inter-layer shearing strength test device, the apparatus structure is simple, operating method be easy, it is contemplated that vehicle opens
The pressure at right angle of dynamic and braking horizontal friction and vehicular load, both power make the interlayer of pavement structure produce to cut and answer
Power, can accurately simulating semi-rigid Base Asphalt Pavement actual forced status.
The utility model solve the technical problem the technical solution adopted is that: a kind of drip of tilting semi-rigid type base is provided
The device of green road surface inter-layer shearing strength test, it is characterised in that the device includes pressure rod, briquetting, load control system, pad
Block and support base；The lower end of pressure rod connects briquetting, and cushion block is arranged in support base, and cushion block support base can be slided relatively
It is dynamic；It is equipped with inclined groove on briquetting and the opposite face of cushion block, the size of two inclined grooves is consistent, and two inclined groove energy
Test specimen to be measured is enough fitted closely, the shape of two grooves is matched with the shape of test specimen；Support base lower part is fixed in supporting table,
Load control system loads on pressure rod；The recessed grain of the briquetting and the recessed grain of cushion block are tilted to same direction, inclined angle alpha
No more than 59 °.
Compared with prior art, the utility model has the beneficial effects that
Utility model device measures semi-rigid asphalt pavement inter-layer shearing strength using oblique scissor test.It is testing
When, test specimen is in two groove positions and completely closely sealed, ensure that the stability being further applied load.Its test method are as follows: first
The distance between briquetting and supporting block are adjusted to the position that just test specimen can have just been entered, then placed test specimen therein
Groove starts pressure rod, moves downward test specimen, by briquetting test specimen is deformed until destroying, and test specimen destruction is
Corresponding load is peak load, finally calculates semi-rigid asphalt pavement inter-layer shearing strength.Device and method behaviour
Make simply, to can accurately reflect the actual forced status of semi-rigid asphalt pavement, resist between semi-rigid type base blacktop
The evaluation for cutting performance is of great significance.The application can be applicable in surface layer and surface layer, the interlayer shear between surface layer and semi-rigid type base
Strength test.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the interlayer shear-strength test device of Highway in Henan Province office research；
Fig. 2 is the schematic diagram of the LLM shear stress test macro of former Xian Road Communication Univ.'s research；
Fig. 3 is that the structure of the device of the utility model tilting semi-rigid asphalt pavement inter-layer shearing strength test is shown
It is intended to；
Fig. 4 is the structural schematic diagram of test specimen to be measured；
In figure, pressure rod 1, briquetting 2, asphalt surface course 3, adhesive layer 4, semi-rigid type base 5, cushion block 6, support base 7, support
Platform 8, Material Testing Machine 9, load control system 10.
Specific embodiment
The utility model is explained further below with reference to examples and drawings, but does not protect model in this, as to the application
The restriction enclosed.
A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test of the utility model (referred to as fills
Set, referring to Fig. 3) it include pressure rod 1, briquetting 2, load control system 10, cushion block 6 and support base 7；The lower end of pressure rod 1 connects
Briquetting 2 is connect, cushion block 6 is arranged in support base 7, and cushion block can opposite support base sliding；On briquetting 2 and the opposite face of cushion block 6
It is equipped with inclined groove, the size of two inclined grooves is consistent, and two inclined grooves can fit closely test specimen to be measured, and two
The shape of groove is matched with the shape of test specimen；Support base lower part is fixed in supporting table 8, and the load of load control system 10 is adding
On compression bar 1；The recessed grain of the briquetting and the recessed grain of cushion block are tilted to same direction, and inclined angle alpha is 40 °.
Because the testing requirements automobile braking force summation of automobile braking force and the ratio of complete vehicle weight are big in vehicle zero load
In 60%, fully loaded greater than 50% in vehicle, i.e. the angle α is necessarily less than
Test specimen to be measured described in the utility model is four prisms cylinder structure, and the shape of two recessed grains is and four prisms cylinder test specimen
Compatible prism.
Above-mentioned load control system 10, pressure rod, supporting table 8, support base 7 collectively form Material Testing Machine 9.It is used
Material Testing Machine is the WDW almighty test machine from German import, and using micro-computer processing technology, parameter inputs number using keyboard
Word is shown.
The upper surface of support base 7 used uses mirror finish technology, and cushion block 6 can be with free skating with respect to support base 7
It is dynamic, and keep it steady, it since test specimen is tiltedly put, if cannot slide, directly crushes, it cannot be guaranteed that test specimen is along viscous
The junction changing of the relative positions.
Semi-rigid asphalt pavement described in the utility model be layer structure, from top to bottom include asphalt surface course 3,
Adhesive layer 4, semi-rigid type base 5 (referring to fig. 4) include asphalt surface course 3, adhesive layer 4, asphalt surface course, adhesive layer from top to bottom
4, semi-rigid type base 5；The application device can measure anti-between two asphalt surface courses, between asphalt surface course and semi-rigid type base
Cut intensity.
The application method of utility model device is: in test, test specimen is located in two groove positions and completely close
It closes, ensure that the stability being further applied load.First being adjusted to the distance between briquetting 1 and cushion block 6 just can be test specimen to be measured
Then test specimen is placed on two grooves by the position that just put in, start pressure rod, move downward briquetting, pass through pressure
Block makes test specimen deform until destroying, and corresponding load is peak load when test specimen destroys, finally according to formula τ=
Sin α × F/S calculates semi-rigid asphalt pavement inter-layer shearing strength.
Wherein, τ is shearing strength, and the vertical that F is given by pressure rod 1, S is the forced area on test specimen both sides, i.e.,
The sum of the short side area that test specimen is contacted with two grooves；α is inclination angle.
The utility model does not address place and is suitable for the prior art.
Claims (3)
1. a kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test, it is characterised in that the device includes
Pressure rod, briquetting, load control system, cushion block and support base；The lower end of pressure rod connects briquetting, and cushion block setting is at support bottom
On seat, cushion block can opposite support base sliding；It is equipped with inclined groove on briquetting and the opposite face of cushion block, two inclined grooves
Size is consistent, and two inclined grooves can fit closely test specimen to be measured, and the shape of two grooves is matched with the shape of test specimen；Branch
Support pedestal lower part is fixed in supporting table, and load control system loads on pressure rod；The recessed grain of the briquetting is recessed with cushion block
Grain is tilted to same direction, and inclined angle alpha is not more than 59 °.
2. the device of tilting semi-rigid asphalt pavement inter-layer shearing strength test according to claim 1, special
Sign is that the test specimen to be measured is four prisms cylinder structure, and the inclined angle alpha of groove is 40 °.
3. the device of tilting semi-rigid asphalt pavement inter-layer shearing strength test according to claim 1, special
Sign is the upper surface of the support base using mirror finish technology, and cushion block can be free to slide with respect to support base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821064975.0U CN208501452U (en) | 2018-07-06 | 2018-07-06 | A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821064975.0U CN208501452U (en) | 2018-07-06 | 2018-07-06 | A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208501452U true CN208501452U (en) | 2019-02-15 |
Family
ID=65283348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821064975.0U Expired - Fee Related CN208501452U (en) | 2018-07-06 | 2018-07-06 | A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208501452U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111814340A (en) * | 2020-07-14 | 2020-10-23 | 河北工业大学 | Method for predicting bottom tensile stress of water-stable gravel subbase layer by considering construction and maintenance temperatures |
| CN113588931A (en) * | 2021-08-03 | 2021-11-02 | 山东高速股份有限公司 | Top-down type pavement crack model based on indoor test and evaluation method thereof |
| CN114047081A (en) * | 2021-09-02 | 2022-02-15 | 宁夏大学 | Method and device for determining critical thickness of structural asphalt layer |
| CN114264561A (en) * | 2021-12-31 | 2022-04-01 | 同济大学 | Freezing-thawing oblique shear test method and system for testing water stability of asphalt mixture |
| CN115876616A (en) * | 2023-03-03 | 2023-03-31 | 山西交通科学研究院集团有限公司 | Test device for testing mechanical behavior of road after repair through friction force and positive pressure |
-
2018
- 2018-07-06 CN CN201821064975.0U patent/CN208501452U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111814340A (en) * | 2020-07-14 | 2020-10-23 | 河北工业大学 | Method for predicting bottom tensile stress of water-stable gravel subbase layer by considering construction and maintenance temperatures |
| CN113588931A (en) * | 2021-08-03 | 2021-11-02 | 山东高速股份有限公司 | Top-down type pavement crack model based on indoor test and evaluation method thereof |
| CN113588931B (en) * | 2021-08-03 | 2022-06-07 | 山东高速股份有限公司 | Top-down type pavement crack model based on indoor test and evaluation method thereof |
| CN114047081A (en) * | 2021-09-02 | 2022-02-15 | 宁夏大学 | Method and device for determining critical thickness of structural asphalt layer |
| CN114264561A (en) * | 2021-12-31 | 2022-04-01 | 同济大学 | Freezing-thawing oblique shear test method and system for testing water stability of asphalt mixture |
| CN114264561B (en) * | 2021-12-31 | 2024-03-26 | 同济大学 | Freeze thawing oblique shear test method and system for testing water stability of asphalt mixture |
| CN115876616A (en) * | 2023-03-03 | 2023-03-31 | 山西交通科学研究院集团有限公司 | Test device for testing mechanical behavior of road after repair through friction force and positive pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208501452U (en) | A kind of device of tilting semi-rigid asphalt pavement inter-layer shearing strength test | |
| CN102519808B (en) | Device and method for testing interlayer shear fatigue of composite asphalt pavement | |
| Pouget et al. | Viscous energy dissipation in asphalt pavement structures and implication for vehicle fuel consumption | |
| Van Dijk et al. | The fatigue of bitumen and bituminous mixes | |
| Romanoschi | Characterization of pavement layer interfaces | |
| CN108240965B (en) | Asphalt pavement interlayer bonding strength detection device and detection method thereof | |
| CN105136587A (en) | Bituminous mixture rutting test device | |
| CN203083886U (en) | Asphalt pavement rolling compaction analyzer | |
| CN103134726A (en) | Bituminous pavement rolling analyzer | |
| Qu et al. | Analysis on the deflection and load transfer capacity of a prefabricated airport prestressed concrete pavement | |
| CN205749164U (en) | A kind of sandwich establishment asphalt Reflection Cracking performance testing device | |
| CN108037028B (en) | Method and device for testing shearing resistance and fatigue of pavement interface under vehicle braking condition | |
| CN108956334A (en) | The test device of paving mix and its structure Interlaminar shear strengths | |
| D’Andrea et al. | Dynamic tests on bituminous layers interface | |
| De Beer et al. | Towards improved mechanistic design of thin asphalt layer surfacings based on actual tyre/pavement contact stress-in-motion (SIM) data in South Africa | |
| Mazhoud et al. | Pavement integration of an inductive charging system for electric vehicles. Results of the INCIT-EV project | |
| CN209624243U (en) | A kind of bituminous pavement stabilizing test device of the evaluation containing weak intercalated layer | |
| Titi et al. | Spatial variability of compacted aggregate bases | |
| CN208588645U (en) | Road interface characteristic test device | |
| Pittman | Development of a design procedure for roller-compacted concrete (RCC) pavements | |
| Jiao et al. | Research on a treatment measure for base regeneration by preset cracking and grouting for severe reflective cracks | |
| Majidzadeh et al. | Improved methods to eliminate reflection cracking | |
| Moretti et al. | Theoretical analysis of stone pavers in pedestrian areas | |
| CN109142155A (en) | Road interface characteristic test device and method | |
| Li et al. | Characteristics of base friction for concrete pavement structure in China: Experimental study |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190508 Address after: 300130 No. 8, Hebei University of Technology, Tianjin, Hongqiao No. 330 Co-patentee after: Shanxi Expressway Group Co.,Ltd. Patentee after: Hebei University of Technology Address before: 300130 No. 8, Hebei University of Technology, Tianjin, Hongqiao No. 330 Patentee before: Hebei University of Technology |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |