CN204165978U - A kind of asphalt penetration test precise testing device - Google Patents
A kind of asphalt penetration test precise testing device Download PDFInfo
- Publication number
- CN204165978U CN204165978U CN201420675832.9U CN201420675832U CN204165978U CN 204165978 U CN204165978 U CN 204165978U CN 201420675832 U CN201420675832 U CN 201420675832U CN 204165978 U CN204165978 U CN 204165978U
- Authority
- CN
- China
- Prior art keywords
- lead
- pipe
- injection bar
- support
- tube bundle
- 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
Abstract
The utility model discloses a kind of asphalt penetration test precise testing device, comprise and be arranged at the support (2) on base plate (1) and the water bath containers (3) for accommodating bitumen mixture specimen (5), support (2) is provided with tube bundle (11), taking the lead the upper end of pipe (6) has convex edge (12), taking the lead pipe (6) penetrates in tube bundle (11), injection bar (7) penetrates takes the lead in pipe (6) and is threaded connection, and loads on bearing platform (8) that top that balancing weight (9) is positioned over injection bar (7) sets firmly.The beneficial effects of the utility model are: can realize the accurate control to pile penetration test process, the control of test specimen temperature control maintenance and the accurate acquisition of test data, can reflect the high-temperature behavior of casting type asphaltic mixture more accurately; Apparatus structure is reasonable in design, and eliminate the impact of manual operation factors on test result, test result is accurate.
Description
Technical field
The utility model relates to performance of asphalt mixture proving installation field, particularly, relates to a kind of asphalt penetration test precise testing device.
Background technology
Cast asphalt concrete, owing to having excellent water resistance, cryogenic property, ageing resistance, anti-fatigue performance and the retinue property excellent to steel bridge deck, is widely used in the construction of domestic and international paving steel bridge deck.Due to the open defect that high-temperature stability deficiency is cast asphalt concrete, adopt the Steel Bridge Deck Pavement ubiquity rut disease of cast asphalt concrete, therefore need to adopt suitable test method and device to test its high-temperature behavior.
For casting type asphaltic mixture, shop experiment is usually by adopting penetration test method to test casting type asphaltic mixture high-temperature behavior, but existing penetration test apparatus structure error is larger, different tests device or same test unit is adopted to carry out test operation by different operating personnel, different test results will be obtained, test result out of true, and be difficult to record continuous, accurate injection displacement curve.
Utility model content
Technical problem to be solved in the utility model is to provide that a kind of reasonable in design, test process are accurate, test data accurate asphalt penetration test precise testing device.
The technical scheme in the invention for solving the above technical problem is:
A kind of asphalt penetration test precise testing device, comprise base plate, be arranged at the support on base plate and water bath containers, the bitumen mixture specimen being arranged at the bracing frame in water bath containers and being arranged on bracing frame, also comprise and take the lead pipe, injection bar, bearing platform, load balancing weight and the displacement detector for detecting the displacement of injection bar, support is positioned at the tube bundle part directly over water bath containers being provided with a vertical direction and running through support, take the lead pipe upper end outer wall on there is an annular convex edge, take the lead pipe inwall on be provided with internal thread, taking the lead the bottom of pipe penetrates in tube bundle from the top of tube bundle, tube bundle and taking the lead between pipe as clearance fit, the outside surface of injection bar is provided with and takes the lead the external thread that the internal thread of pipe matches, injection bar from take the lead the top of pipe penetrate take the lead in pipe and by screw thread with take the lead pipe and be connected, bearing platform is fixedly arranged on the top of injection bar, load balancing weight to be positioned on bearing platform.
Bearing platform is placed balancing weight to load, load acts on test specimen end face by injection bar, injection bar with take the lead pipe and be threaded, take the lead the smooth tube bundle contact free with Bracket setting of circular tube external, thus make injection bar and its outside take the lead the common free-falling of pipe, tube bundle plays taking the lead the guide effect of pipe, ensure that the vertical drop of injection bar, taking the lead the ledge structure of pipe to serve before imposed load by support by taking the lead the effect that pipe supports balancing weight, treat the whole loaded of load, after displacement detector debugging, take the lead pipe releasing support to the support of load by screwing, start to carry out load test process, therefore test operation step is clear and definite, eliminate the impact of manual operation factors on test result, ensure that the accuracy of pile penetration test process.
Described displacement detector is digital display centimeter or displacement transducer, and displacement detector connects computing machine by data line, and displacement data is reached computing machine.Thus achieve and measure displacement data by displacement detector and real-time displacement data transferred to computing machine, by computer recording injection bar displacement curve over time, not only facilitate Test Data Collecting, and the personal error avoiding digital independent to bring, ensure that the accuracy of data.
Described displacement detector is digital display centimeter, and digital display centimeter is fixedly arranged on crossbeam, and the contact of digital display centimeter contacts with bearing platform lower surface.
Described displacement detector is displacement transducer, and displacement transducer is fixedly arranged on injection bar or bearing platform.
Digital display centimeter or displacement transducer facilitate installation and debugging, and structure is simple.
Described tube bundle is the cylindrical part of both ends open, and support is positioned at the boring part directly over water bath containers being provided with a vertical direction and running through support, and hollow cylinder pipeline to be placed in this boring and to be fixedly connected with crossbeam by welding.By adopting independently tube bundle, reduce the difficulty of processing of tube bundle, only need process on support and hole, the tube bundle inside surface with accuracy requirement then can be processed separately in addition, then finished product tube bundle is welded in boring, is convenient to processing.
Four edges of the bottom of described base plate are all provided with a height leveling bolt.Height leveling bolt can ensure that base plate is horizontal, and ensure that the accuracy of test equally, makes device can be applicable to not have the occasion of flat surface.Meanwhile, support, injection bar, take the lead cylinder and tube bundle structure, ensure that injection bar is in vertical state, thus common guarantee test specimen force area uniform force.
Described support is made up of column and crossbeam, the bottom of column is welded on base plate, and crossbeam is arranged at directly over water bath containers, and one end of crossbeam is welded in the top of column, boring is arranged on crossbeam, and the horizontal projection position of boring is consistent with the center of base plate and water bath containers.This supporting structure both ensure that the steadiness of support, again can fully for water bath containers is stepped down while meeting injection bar installation requirement, and structure is simple, was easy to processing.
To sum up, the beneficial effects of the utility model are:
1, the utility model is for testing pile penetration and the pile penetration increment of cast asphalt concrete, the accurate control to pile penetration test process, the control of test specimen temperature control maintenance and the accurate acquisition of test data can be realized, the high-temperature behavior of casting type asphaltic mixture can be reflected more accurately.
2, the utility model can adjust the control temperature of water bath containers, and the pile penetration of test test specimen when different temperatures, evaluates the casting type asphaltic mixture high-temperature behavior of Different climate subregion.
3, the utility model reduces the error caused because of apparatus structure, arrange disposed thread, outer smooth take the lead pipe, not only can well fix the position of injection bar, and injection bar vertical whereabouts freely can be ensured, thus ensure that the accuracy of pile penetration test process, eliminate the impact of manual operation factors on test result, test result is accurate.
4, displacement detector is connected computing machine by transmission line by the utility model, and record injection bar displacement curve over time, not only facilitates Test Data Collecting, and the personal error avoiding digital independent to bring, and ensure that the accuracy of data.
5, the utility model in conjunction with the temperature regulating device in existing asphalt penetrometer, can not only reduce the processing cost of a whole set of test unit, and ensure that the accuracy of test specimen temperature control maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Mark and corresponding parts title in accompanying drawing:
1-base plate, 2-support, 3-water bath containers, 4-bracing frame, 5-bitumen mixture specimen, 6-takes the lead pipe, 7-injection bar, 8-bearing platform, and 9-loads balancing weight, 10-displacement detector, 11-tube bundle, 12-convex edge, 13-height leveling bolt, 14-column, 15-crossbeam.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1, a kind of asphalt penetration test precise testing device, comprise base plate 1, be arranged at the support 2 on base plate 1 and water bath containers 3, be arranged at the bracing frame 4 in water bath containers 3, be arranged at the bitumen mixture specimen 5 on bracing frame 4, take the lead pipe 6, injection bar 7, bearing platform 8, load balancing weight 9 and the displacement detector 10 for detecting injection bar 7 displacement, support 2 is positioned at the tube bundle 11 part directly over water bath containers 3 being provided with a vertical direction and running through support 2, take the lead pipe 6 for tubular, take the lead pipe 6 upper end outer wall on there is an annular convex edge 12, take the lead pipe 6 inwall on be provided with internal thread, taking the lead the bottom of pipe 6 penetrates in tube bundle 11 from the top of tube bundle 11, tube bundle 11 and take the lead to be the less clearance fit in gap between pipe 6, guarantee is taken the lead pipe 6 and only can be rotated and slide axially in tube bundle 11, can not radial direction rock, take the lead pipe 6 outer smooth, so that freely move up and down in hollow cylinder pipeline 11, rotate, the outside surface of injection bar 7 is provided with and takes the lead the external thread that the internal thread of pipe 6 matches, injection bar 7 from take the lead the top of pipe 6 penetrate take the lead in pipe 6 and by screw thread with take the lead pipe 6 and be connected, rotate and take the lead pipe 6 and can adjust its position at injection bar 7, and play effect fixing for injection bar 7 when convex edge, top 12 location contacts crossbeam 15 end face, bearing platform 8 is fixedly arranged on the top of injection bar 7, bearing platform 8 and injection bar 7 are welded as entirety, loading balancing weight 9 is positioned on bearing platform 8, loading balancing weight 9 acts on bearing platform 8, the horizontal projection position of boring is consistent with the center of base plate 1 and water bath containers 3, thus make described injection bar 7, hollow cylinder pipeline 11, the center of the force area, middle part of base plate 1 and bitumen mixture specimen 5 is on same pedal line.
Bearing platform 8 is placed loading balancing weight 9 to load, by injection bar 7, act on bitumen mixture specimen 5 end face, external screw-thread is set in the middle part of injection bar 7 and takes the lead pipe 6 and be threaded, take the lead tube bundle 11 contact free that pipe 6 outer smooth and support 2 arrange, note in tube bundle 11 smearing lubricant, so as injection bar 7 outside take the lead pipe 6 free-falling.Tube bundle 11 plays taking the lead the guide effect of pipe 6, ensure that the vertical drop of injection bar, taking the lead convex edge 12 structure of pipe 6 to serve before imposed load by support 2 by taking the lead the effect that pipe 6 pairs of balancing weights support, after treating the debugging of the whole loaded of load, displacement detector 10, take the lead pipe 6 remove the support of support 2 pairs of load by screwing, start to carry out load test process, therefore test operation step is clear and definite, eliminate the impact of manual operation factors on test result, ensure that the accuracy of pile penetration test process.
Described displacement detector 10 is digital display centimeter or displacement transducer, and displacement detector 10 connects computing machine by data line, and displacement data is reached computing machine.
Described displacement detector 10 is digital display centimeter, digital display centimeter is fixedly arranged on crossbeam 15, the present embodiment middle cross beam 15 left end is fixedly connected with column 14, digital display centimeter is fixedly installed on crossbeam 15 right-hand member, such as can at the certain thickness circular steel plate of crossbeam 15 right-hand member welding, by bonding by seccotine with plectane bottom digital display centimeter, the contact of digital display centimeter contacts with bearing platform 8 lower surface, digital display centimeter should adopt larger range, for test specimen displacement deformation provides enough measurements to ensure.
Described displacement detector 10 is displacement transducer, and displacement transducer is fixedly arranged on injection bar 7 or bearing platform 8.
Displacement detector 10 connects computing machine by data line, in conjunction with the change curve of drive software record decline displacement with action time.
Described tube bundle 11 is the cylindrical part of both ends open, and support 2 is positioned at the boring part directly over water bath containers 3 being provided with a vertical direction and running through support 2, and hollow cylinder pipeline 11 to be placed in this boring and to be fixedly connected with crossbeam 15 by welding.By adopting independently tube bundle 11, reduce the difficulty of processing of tube bundle 11, only need process on support 2 and hole, tube bundle 11 inside surface with accuracy requirement then can be processed separately in addition, then finished product tube bundle 11 is welded in boring, is convenient to processing.
Described support 2 is made up of column 14 and crossbeam 15, and the bottom of column 14 is welded on base plate 1, and crossbeam 15 is arranged at directly over water bath containers 3, and one end of crossbeam 15 is welded in the top of column 14, and boring is arranged on crossbeam 15.This support 2 structure both ensure that the steadiness of support 2, fully can step down for water bath containers 3 again while meeting injection bar 7 installation requirement, and structure is simple, was easy to processing.
Four edges of the bottom of described base plate 1 are all provided with four edges that a height leveling bolt 13,4 height leveling bolts 13 are symmetricly set in base plate 1.Height leveling bolt 13 can ensure that base plate 1 is horizontal, and ensure that the accuracy of test equally, makes device can be applicable to not have the occasion of flat surface.Meanwhile, support 2, injection bar 7, take the lead cylinder 6 and tube bundle 11 structure, ensure that injection bar 7 is in vertical state, thus common guarantee test specimen force area uniform force.
Described bracing frame 4 is A-frame 2 platform, A-frame 2 platform that bitumen mixture specimen 5 is placed in water bath with thermostatic control container 3 carries out maintenance, accepts the pressure of injection bar 7.Described water bath containers 3 is water bath with thermostatic control container 3, and water bath with thermostatic control container 3 can use the temperature regulating device of laboratory common instrument Asphalt Penetration tester.
Height leveling bolt 13 and A-frame 2 platform can ensure that test specimen end face is horizontal, and injection bar 7 is in vertical state and bottom surface is smooth, common guarantee test specimen center stressed district uniform force.
Column 14 and crossbeam 15 can adopt the smooth stainless-steel tube of same high strength to cut into two links along 45 °, and vertical welding processes, crossbeam 15 is specified that design attitude is holed, to take the lead pipe 6 is placed in hole and is welded and fixed, column 14 bottom is fixedly welded on assigned position on base plate 1, four, base plate 1 bottom edge rational height leveling bolt 13, injection bar 7 and bearing platform 8 are weldingly connected, to outside injection bar 7 middle part and take the lead tapping inside pipe 6 make its bolt be connected and make bearing platform 8, injection bar 7 and to take the lead disk three gross mass be 2.5kg, materials processing 5 pieces of quality of not easily getting rusty are taked to be that 10kg loads balancing weight 9.
Column 14 and crossbeam 15 all adopt that intensity is high, rigidity is large has certain thickness hollow circular-tube material and firm welding, and guarantee crossbeam 15 does not produce deflection displacement under injection bar 7 load-bearing fixing situation; Taking the lead pipe 6, to be placed in hollow cylinder pipeline 11 inner, and smear lubricant taking the lead outside and hollow cylinder pipeline 11 inside of pipe 6, ensures that injection bar 7 Vertical Free falls; Height leveling bolt 13 can adjust the horizontality of base plate 1, ensures that test specimen is put be horizontal in conjunction with water bath with thermostatic control container 3 base and A-frame 2 platform.
The course of work of the present utility model is:
First injection bar 7 is vertically dropped to surface of test piece central authorities, the position of adjustment height leveling bolt 13 and A-frame 2 makes injection bar 7 bottom surface contact completely with test specimen upper surface.
Then, when adopting digital display centimeter as displacement detector 10, by the zero setting of dial gauge reading, putting down injection bar 7, reading the reading of dial gauge during 10min, taking the lead the convex edge 12 of pipe 6 in this process is positioned at the top of crossbeam 15 all the time, does not contact with crossbeam 15; Finally rotate and take the lead pipe 6 lower surface of its convex edge 12 is contacted with crossbeam 15, fixing injection bar 7, loading balancing weight 9 is put into successively on bearing platform 8, by the zero setting again of dial gauge reading, pipe 6 is taken the lead in retrograde rotation makes it rise, injection bar 7 pressure in loading situation is made to act on surface of test piece, and by the change curve of the decline displacement of computer recording injection bar 7 in 1h with action time.
When adopting displacement transducer as displacement detector 10, after injection bar 7 bottom surface contacts completely with test specimen upper surface, as reference position, put down injection bar 7 using now displacement transducer present position, the shift value of displacement transducer during reading 10min; Finally rotate and take the lead pipe 6 its lower surface is contacted with crossbeam 15, fixing injection bar 7, loading balancing weight 9 is put into successively on bearing platform 8, using now displacement transducer present position as reference position, pipe 6 is taken the lead in retrograde rotation makes it rise, injection bar 7 pressure in loading situation is made to act on surface of test piece, and by the change curve of the decline displacement of computer recording injection bar 7 in 1h with action time.
The utility model, for testing pile penetration and the pile penetration increment of cast asphalt concrete, can realize the high-temperature behavior that the accurate control to pile penetration test process, the control of test specimen temperature control maintenance and the accurate acquisition of test data can reflect casting type asphaltic mixture more accurately.
As mentioned above, the utility model can be realized preferably.
Claims (7)
1. an asphalt penetration test precise testing device, comprise base plate (1), be arranged at the support (2) on base plate (1) and water bath containers (3), the bitumen mixture specimen (5) being arranged at the bracing frame (4) in water bath containers (3) and being arranged on bracing frame (4), it is characterized in that, also comprise and take the lead pipe (6), injection bar (7), bearing platform (8), load balancing weight (9) and the displacement detector (10) for detecting injection bar (7) displacement, support (2) is positioned at the tube bundle (11) part directly over water bath containers (3) being provided with a vertical direction and running through support (2), take the lead pipe (6) upper end outer wall on there is an annular convex edge (12), take the lead pipe (6) inwall on be provided with internal thread, taking the lead the bottom of pipe (6) penetrates in tube bundle (11) from the top of tube bundle (11), tube bundle (11) and taking the lead between pipe (6) as clearance fit, the outside surface of injection bar (7) is provided with and takes the lead the external thread that the internal thread of pipe (6) matches, injection bar (7) from take the lead the top of pipe (6) penetrate take the lead in pipe (6) and by screw thread with take the lead pipe (6) and be connected, bearing platform (8) is fixedly arranged on the top of injection bar (7), load balancing weight (9) to be positioned on bearing platform (8).
2. a kind of asphalt penetration test precise testing device according to claim 1, it is characterized in that, described displacement detector (10) is digital display centimeter or displacement transducer, displacement detector (10) connects computing machine by data line, and displacement data is reached computing machine.
3. a kind of asphalt penetration test precise testing device according to claim 2, it is characterized in that, described displacement detector (10) is digital display centimeter, and digital display centimeter is fixedly arranged on crossbeam (15), and the contact of digital display centimeter contacts with bearing platform (8) lower surface.
4. a kind of asphalt penetration test precise testing device according to claim 2, is characterized in that, described displacement detector (10) is displacement transducer, and displacement transducer is fixedly arranged on injection bar (7) or bearing platform (8).。
5. a kind of asphalt penetration test precise testing device according to claim 1, it is characterized in that, the cylindrical part that described tube bundle (11) is both ends open, support (2) is positioned at the boring part directly over water bath containers (3) being provided with a vertical direction and running through support (2), and hollow cylinder pipeline (11) to be placed in this boring and to be fixedly connected with crossbeam (15) by welding.
6. a kind of asphalt penetration test precise testing device according to claim 1, is characterized in that, four edges of the bottom of described base plate (1) are all provided with height leveling bolt (13).
7. a kind of asphalt penetration test precise testing device according to claim 1, it is characterized in that, described support (2) is made up of column (14) and crossbeam (15), the bottom of column (14) is welded on base plate (1), crossbeam (15) is arranged at directly over water bath containers (3), one end of crossbeam (15) is welded in the top of column (14), boring is arranged on crossbeam (15), and the horizontal projection position of boring is consistent with the center of base plate (1) and water bath containers (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675832.9U CN204165978U (en) | 2014-11-13 | 2014-11-13 | A kind of asphalt penetration test precise testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420675832.9U CN204165978U (en) | 2014-11-13 | 2014-11-13 | A kind of asphalt penetration test precise testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204165978U true CN204165978U (en) | 2015-02-18 |
Family
ID=52539656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420675832.9U Expired - Fee Related CN204165978U (en) | 2014-11-13 | 2014-11-13 | A kind of asphalt penetration test precise testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204165978U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699632A (en) * | 2016-02-04 | 2016-06-22 | 重庆市智翔铺道技术工程有限公司 | Bituminous concrete penetration testing device |
| CN106323757A (en) * | 2016-09-06 | 2017-01-11 | 哈尔滨工业大学 | Pouring asphalt concrete penetration test device |
| CN109580349A (en) * | 2018-12-12 | 2019-04-05 | 中咨公路养护检测技术有限公司 | A kind of pitch cold-patch mixture performance experimental rig and test method |
| CN110514559A (en) * | 2019-08-30 | 2019-11-29 | 中国航发动力股份有限公司 | A kind of abrasive Flow abrasive material viscosity matching measurement device and measurement method |
| CN110579424A (en) * | 2018-06-11 | 2019-12-17 | 中国石油化工股份有限公司 | Foam cement slurry pressure densimeter and slurry density measuring method |
| CN110595951A (en) * | 2017-08-01 | 2019-12-20 | 刘素萍 | Cone penetration tester for ointment |
| CN111912746A (en) * | 2020-06-09 | 2020-11-10 | 广西大学 | Quantitative evaluation method for analyzing concrete workability based on bottom resistance |
| CN114018695A (en) * | 2021-09-23 | 2022-02-08 | 山东高速集团有限公司 | Device and test method for rapidly detecting asphalt deformation and deformation recovery |
-
2014
- 2014-11-13 CN CN201420675832.9U patent/CN204165978U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699632A (en) * | 2016-02-04 | 2016-06-22 | 重庆市智翔铺道技术工程有限公司 | Bituminous concrete penetration testing device |
| CN105699632B (en) * | 2016-02-04 | 2018-06-29 | 重庆市智翔铺道技术工程有限公司 | A kind of bituminous concrete pile penetration test device |
| CN106323757A (en) * | 2016-09-06 | 2017-01-11 | 哈尔滨工业大学 | Pouring asphalt concrete penetration test device |
| CN110595951A (en) * | 2017-08-01 | 2019-12-20 | 刘素萍 | Cone penetration tester for ointment |
| CN110579424A (en) * | 2018-06-11 | 2019-12-17 | 中国石油化工股份有限公司 | Foam cement slurry pressure densimeter and slurry density measuring method |
| CN110579424B (en) * | 2018-06-11 | 2021-10-22 | 中国石油化工股份有限公司 | Foam cement slurry pressure densimeter and slurry density measuring method |
| CN109580349A (en) * | 2018-12-12 | 2019-04-05 | 中咨公路养护检测技术有限公司 | A kind of pitch cold-patch mixture performance experimental rig and test method |
| CN110514559A (en) * | 2019-08-30 | 2019-11-29 | 中国航发动力股份有限公司 | A kind of abrasive Flow abrasive material viscosity matching measurement device and measurement method |
| CN111912746A (en) * | 2020-06-09 | 2020-11-10 | 广西大学 | Quantitative evaluation method for analyzing concrete workability based on bottom resistance |
| CN114018695A (en) * | 2021-09-23 | 2022-02-08 | 山东高速集团有限公司 | Device and test method for rapidly detecting asphalt deformation and deformation recovery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204165978U (en) | A kind of asphalt penetration test precise testing device | |
| CN105588718B (en) | Machine tool chief axis combination property detection/monitoring test system and method | |
| KR101170898B1 (en) | Displacement measure device | |
| CN101373174B (en) | Direct shear apparatus capable of directly measuring interface friction force | |
| CN105675409A (en) | Integrated type rock mass structural surface direct shear apparatus and direct shear test method | |
| CN110700225B (en) | Roadbed dynamic resilience modulus field test equipment and measuring method thereof | |
| CN105571758A (en) | Dilatometer for measuring expansive force by constant volume method | |
| CN108613884A (en) | A kind of ring shear apparatus being contemplated that constant stiffness constant volume Chang Yingli | |
| CN108221693B (en) | A kind of Bridge Rotation Construction Technique balance weight regulation method and regulator control system | |
| CN105135971A (en) | Movable spherical core comprehensive error detecting device supported by double vertical columns | |
| CN205426517U (en) | Lathe main shaft comprehensive properties detection / monitoring testing system | |
| CN205209677U (en) | Dilatometer of bulging force is measured to permanent volumetric method | |
| WO2022105840A1 (en) | Test device and method for measuring frictional resistance of thixotropic mud | |
| CN110470593A (en) | For quickly measuring the experimental rig and method of structural plane model material friction coefficient | |
| CN102589408B (en) | Hub type concrete self-shrinkage measuring device | |
| CN109826250B (en) | Foundation bearing capacity detection device and method | |
| CN109443988B (en) | Testing instrument and testing method for rheological property of coarse-grained soil | |
| CN202793937U (en) | Measuring device for bending creep rate of large-deformation bituminous mixture | |
| CN206248657U (en) | A kind of use CBR device for surveying geotechnological expansion rate | |
| CN102645328B (en) | Corner test device for pressure tester | |
| CN201909611U (en) | Measuring device for axiality of step-hole-structure cylinder barrel | |
| CN108489828A (en) | A kind of concrete and soil body interface shearing experimental rig and its test method | |
| CN104990838B (en) | The calibrating installation and method of bitumen needle forcemeter | |
| CN105698996A (en) | Shearing strength testing device for pile-soil interface | |
| RU2473878C2 (en) | Method for experimental determination of long-term strength gradient of loaded and corroding concrete and device for its realisation |
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: 20150218 Termination date: 20151113 |
|
| EXPY | Termination of patent right or utility model |