CN115201032B - Portable asphalt dynamic shear rheometer - Google Patents
Portable asphalt dynamic shear rheometer Download PDFInfo
- Publication number
- CN115201032B CN115201032B CN202210825476.3A CN202210825476A CN115201032B CN 115201032 B CN115201032 B CN 115201032B CN 202210825476 A CN202210825476 A CN 202210825476A CN 115201032 B CN115201032 B CN 115201032B
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- sample
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- asphalt
- module
- adjusting mechanism
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- 239000010426 asphalt Substances 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 8
- 238000000333 X-ray scattering Methods 0.000 claims description 3
- 238000001956 neutron scattering Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract 3
- 238000011065 in-situ storage Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a portable asphalt dynamic shear rheometer, and belongs to the technical field of asphalt rheological property testing equipment. The asphalt dynamic shear rheometer comprises a mechanical structure module and a driving acquisition module. Wherein: the mechanical structure module comprises an actuating module, a clamping module and a displacement adjusting module; the actuating module comprises a grating encoder, a stepping motor, a torque sensor and a lower shell; the clamping module comprises a sample upper clamp, a sample lower clamp and a temperature sensor; the displacement adjusting module comprises a concentric adjusting mechanism, a sample thickness adjusting mechanism and a limiting block; the drive acquisition module comprises a closed-loop motor driver, a high-speed torque acquisition card and a PID temperature controller. The invention has the advantages of convenient carrying, low price and strong scene applicability. The method can be applied to the construction process for rapidly detecting the rheological property of the asphalt material, can be used for carrying out in-situ test in combination with other microstructure test equipment, and has important significance in evaluating and optimizing the asphalt material, revealing rheological mechanism, improving the road performance of the asphalt pavement and prolonging the service life of the asphalt pavement.
Description
Technical Field
The invention relates to the technical field of highway engineering asphalt measurement, in particular to a portable asphalt dynamic shear rheometer.
Background
The material is the root of the traffic infrastructure and is the leading officer of the development of the traffic infrastructure. The whole process representation (material research and development, production and construction) of the material performance is the guarantee of building long-life traffic infrastructure. Asphalt is a typical rheological material, and its rheological properties are closely related to road performances such as cracking, rutting and fatigue of asphalt pavement, and is concerned by road workers. The rheometer is an instrument for representing asphalt rheological property, and the existing commercial rheometer basically depends on foreign import, has unit price of more than 40 ten thousand yuan, weight of more than 50kg and height of about 70cm, and has the problems of high price and inconvenience in carrying. The problems cause extremely lack of rheometers for production and construction units, technicians only adopt penetration evaluation systems to evaluate asphalt performances, and asphalt rheological performances are not evaluated, so that evaluation and selection of high-quality asphalt pavement performances are unreasonable, and the service life of the actual asphalt pavement is far lower than the design life. Therefore, the development of the portable dynamic shear rheometer has important significance for timely representing asphalt rheological property, improving road engineering quality and promoting traffic national construction for production and construction units.
Disclosure of Invention
The invention aims to solve the problems of high price, inconvenience in carrying and poor scene applicability of the conventional commercial rheometer, and further provides a portable asphalt dynamic shear rheometer.
The invention aims at realizing the following technical scheme:
a portable asphalt dynamic shear rheometer comprises a mechanical structure module and a driving acquisition module. The mechanical structure module comprises an actuating module, a clamping module and a displacement adjusting module; the actuating module comprises a grating encoder, a stepping motor, a torque sensor and a lower shell; the clamping module comprises a sample upper clamp, a sample lower clamp and a temperature sensor; the displacement adjusting module comprises a concentric adjusting mechanism, a sample thickness adjusting mechanism and a limiting block; the drive acquisition module comprises a closed-loop motor driver, a high-speed torque acquisition card and a PID temperature controller. The top end of the frame body is provided with an encoder through a mounting cavity, an output shaft of the encoder is provided with a rotary main shaft through a bolt, and the end part of the output shaft is sleeved with a stepping motor; the output shaft of the stepping motor is provided with a rotary main shaft through a bolt, and the end part of the output shaft is sleeved with a torque sensor; the closed-loop motor driver, the high-speed torque acquisition card and the PID temperature controller are integrated into a driving controller; the driving controller is electrically connected with the stepping motor and the torque sensor; the sample upper clamp is connected with the torque sensor; the lower sample clamp is integrated with the lower shell; the temperature sensor is fixed on the lower clamp; the concentric adjusting structure, the sample thickness adjusting mechanism and the limiting block are connected with the lower shell from top to bottom through bolts.
Further, the grating encoder, the stepping motor and the torque sensor are hollow mechanisms;
further, the sample holder includes a parallel plate and a vertebral plate.
Further, in order to accurately control the temperature of the sample, a temperature sensor is fixed at a position close to the sample in the lower clamp;
further, in order to accurately control all elements of the equipment to be positioned at the same horizontal position, a concentric adjusting mechanism is fixed on the lower shell, and the axes of the elements are adjusted up and down;
further, in order to accurately control the thickness of the sample, the gap adjusting mechanism is fixed on the concentric adjusting mechanism, and the thickness of the sample is adjusted left and right.
Compared with the prior art, the invention has the following beneficial effects:
the mechanical construction elements of the invention all adopt hollow structures, can be combined with an X-ray/neutron scattering spectrometer to build an asphalt rheo-AXS/ANS combined platform, and has strong scene applicability.
The invention has small volume, is convenient to carry and is convenient for production and construction units to rapidly evaluate the rheological property of the road material.
The invention has important significance for rapidly evaluating, optimizing and revealing rheological mechanism, improving road performance of the asphalt pavement and prolonging the service life of the asphalt pavement.
Drawings
FIG. 1 is a schematic diagram of the mechanical structure of a portable asphalt dynamic shear rheometer according to the invention.
Fig. 2 is a plan view and a side view of a portable asphalt dynamic shear rheometer of the present invention.
FIG. 3 is a schematic diagram showing the connection of the components of a portable asphalt dynamic shear rheometer according to the present invention.
FIG. 4 is a schematic view of a portable asphalt dynamic shear rheometer clamp according to the invention.
Fig. 5 is a schematic diagram of a driving principle of a portable asphalt dynamic shear rheometer according to the invention.
In fig. 1: 1. a grating encoder; 2. a stepping motor; 3. a torque sensor; 4. a sample is put on a clamp; 5. a sample is put down in a clamp; 6. a temperature sensor; 7. a lower housing; 8. a concentric adjustment mechanism; 9. a sample thickness adjustment structure; 10. and a limiting block.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation is given, but the scope of protection of the present invention is not limited to the following embodiments.
Referring to fig. 1 to 5, a portable asphalt dynamic shear rheometer includes a mechanical structure module and a driving acquisition module.
The mechanical structure module comprises an actuating module, a clamping module and a displacement adjusting module, wherein the overall mechanical structure schematic diagram is shown in fig. 1, and the plan view and the side view are shown in fig. 2;
the actuating module comprises a grating encoder 1, a stepping motor 2, a torque sensor 3 and a lower shell 7, and the connection schematic diagram of the elements is shown in figure 3;
the clamping module comprises an upper sample clamp 4, a lower sample clamp 5 and a temperature sensor 6, and the schematic diagram of the clamp is shown in fig. 4;
the displacement adjusting module comprises a concentric adjusting mechanism 8, a sample thickness adjusting mechanism 9 and a limiting block 10;
the drive acquisition module comprises a closed-loop motor driver, a high-speed torque acquisition card and a PID temperature controller;
the top end of the frame body is provided with a grating encoder 1 through a mounting cavity, an output shaft of the encoder 1 is provided with a rotary main shaft through a bolt, and the end part of the output shaft is sleeved with a stepping motor 2;
the output shaft of the stepping motor 2 is provided with a rotary main shaft through a bolt, and the end part of the output shaft is sleeved with a torque sensor 3;
the closed-loop motor driver, the high-speed torque acquisition card and the PID temperature controller are integrated into a driving controller;
the driving controller is electrically connected with the stepping motor 2 and the torque sensor 3, and the driving principle schematic diagram is shown in fig. 5;
the sample upper clamp 4 is connected with the torque sensor 3;
the lower sample clamp 5 is integrated with the lower shell 7;
the temperature sensor 6 is fixed on the lower sample clamp 5;
the concentric adjusting structure 8, the sample thickness adjusting mechanism 9 and the limiting block 10 are connected with the lower shell 7 from top to bottom through bolts.
Wherein, the grating encoder 1, the stepping motor 2 and the torque sensor 3 are hollow mechanisms;
wherein the sample holder comprises a parallel plate and a vertebral plate.
Wherein, in order to accurately control the temperature of the sample, a temperature sensor 6 is fixed at a position close to the sample in the lower clamp 5;
wherein, in order to accurately control all elements of the equipment to be positioned at the same horizontal position, a concentric adjusting mechanism 8 is fixed on a lower shell 7, and the axes of the elements are adjusted up and down;
wherein, in order to accurately control the thickness of the sample, a sample thickness adjusting structure 9 is fixed on the concentric adjusting mechanism 8 to adjust the thickness of the sample left and right.
In the foregoing, the present invention is merely preferred embodiments, which are based on different implementations of the overall concept of the invention, and the protection scope of the invention is not limited thereto, and any changes or substitutions easily come within the technical scope of the present invention as those skilled in the art should not fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (3)
1. The portable asphalt dynamic shear rheometer is characterized by comprising a mechanical structure module and a driving acquisition module;
wherein:
the mechanical structure module comprises an actuating module, a clamping module and a displacement adjusting module;
the actuating module comprises a grating encoder, a stepping motor, a torque sensor and a lower shell;
the clamping module comprises a sample upper clamp, a sample lower clamp and a temperature sensor;
the displacement adjusting module comprises a concentric adjusting mechanism, a sample thickness adjusting mechanism and a limiting block;
the drive acquisition module comprises a closed-loop motor driver, a high-speed torque acquisition card and a PID temperature controller;
the top end of the frame body is provided with an encoder through a mounting cavity, an output shaft of the encoder is provided with a rotary main shaft through a bolt, and the end part of the output shaft is sleeved with a stepping motor;
the output shaft of the stepping motor is provided with a rotary main shaft through a bolt, and the end part of the output shaft is sleeved with a torque sensor;
the closed-loop motor driver, the high-speed torque acquisition card and the PID temperature controller are integrated into a driving controller;
the driving controller is electrically connected with the stepping motor and the torque sensor;
the sample upper clamp is connected with the torque sensor;
the lower sample clamp is integrated with the lower shell;
the temperature sensor is fixed on the lower clamp;
the concentric adjusting structure, the sample thickness adjusting mechanism and the limiting block are connected with the lower shell from top to bottom through bolts;
the grating encoder, the stepping motor, the torque sensor and the shell are hollow mechanisms and are used for constructing an asphalt rheology-X-ray scattering/neutron scattering combined platform by combining an X-ray/neutron scattering spectrometer;
the concentric adjusting mechanism is fixed on the lower shell, and the axes of the elements are adjusted up and down;
in order to accurately control the thickness of the sample, the sample thickness adjusting mechanism is fixed on the concentric adjusting mechanism, and the thickness of the sample is adjusted left and right.
2. The portable asphalt dynamic shear rheometer of claim 1, wherein the sample holder comprises parallel plates and a lamina.
3. The portable asphalt dynamic shear rheometer of claim 1, wherein a temperature sensor is fixed in the lower fixture near the sample for accurate temperature control of the sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210825476.3A CN115201032B (en) | 2022-07-13 | 2022-07-13 | Portable asphalt dynamic shear rheometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210825476.3A CN115201032B (en) | 2022-07-13 | 2022-07-13 | Portable asphalt dynamic shear rheometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115201032A CN115201032A (en) | 2022-10-18 |
| CN115201032B true CN115201032B (en) | 2023-10-31 |
Family
ID=83580235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210825476.3A Active CN115201032B (en) | 2022-07-13 | 2022-07-13 | Portable asphalt dynamic shear rheometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115201032B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5712431A (en) * | 1996-05-01 | 1998-01-27 | Endura-Tec Systems Corporation | Device and method for testing the shear response of a material in response to an applied force |
| CN2938077Y (en) * | 2006-08-30 | 2007-08-22 | 河南省高远公路养护设备有限公司 | Instrument for testing interlayer adhesive strength of bituminous pavement |
| CN102297812A (en) * | 2011-05-20 | 2011-12-28 | 长安大学 | Torsional shear test device for asphalt pavement material and structure |
| CN103149099A (en) * | 2013-02-04 | 2013-06-12 | 大连理工大学 | Pitch rotational shear oscillation fatigue rupture experimental device and method |
| CN103149098A (en) * | 2013-02-01 | 2013-06-12 | 大连理工大学 | Pitch rotation shear failure experimental device |
| CN104865160A (en) * | 2015-05-22 | 2015-08-26 | 华南理工大学 | Eccentric cylinder rheology device and method for stretching/shearing-controllable combined flow field |
| CN109580479A (en) * | 2018-12-03 | 2019-04-05 | 沈振宗 | A kind of experimental rig measuring asphalt roads inter-layer bonding force |
-
2022
- 2022-07-13 CN CN202210825476.3A patent/CN115201032B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5712431A (en) * | 1996-05-01 | 1998-01-27 | Endura-Tec Systems Corporation | Device and method for testing the shear response of a material in response to an applied force |
| CN2938077Y (en) * | 2006-08-30 | 2007-08-22 | 河南省高远公路养护设备有限公司 | Instrument for testing interlayer adhesive strength of bituminous pavement |
| CN102297812A (en) * | 2011-05-20 | 2011-12-28 | 长安大学 | Torsional shear test device for asphalt pavement material and structure |
| CN103149098A (en) * | 2013-02-01 | 2013-06-12 | 大连理工大学 | Pitch rotation shear failure experimental device |
| CN103149099A (en) * | 2013-02-04 | 2013-06-12 | 大连理工大学 | Pitch rotational shear oscillation fatigue rupture experimental device and method |
| CN104865160A (en) * | 2015-05-22 | 2015-08-26 | 华南理工大学 | Eccentric cylinder rheology device and method for stretching/shearing-controllable combined flow field |
| CN109580479A (en) * | 2018-12-03 | 2019-04-05 | 沈振宗 | A kind of experimental rig measuring asphalt roads inter-layer bonding force |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115201032A (en) | 2022-10-18 |
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