CN219065213U - Asphalt concrete deformation test device - Google Patents
Asphalt concrete deformation test device Download PDFInfo
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- CN219065213U CN219065213U CN202222818449.1U CN202222818449U CN219065213U CN 219065213 U CN219065213 U CN 219065213U CN 202222818449 U CN202222818449 U CN 202222818449U CN 219065213 U CN219065213 U CN 219065213U
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- pressure chamber
- asphalt concrete
- servo motor
- water
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- 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
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Abstract
The utility model discloses an asphalt concrete deformation test device, including pressure chamber, pressurized-water jar, servo motor, pressure head, be provided with water and test piece that awaits measuring in the pressure chamber, just the interior top of pressure chamber runs through and is equipped with the pressure head, the pressure chamber with the pressurized-water jar passes through the copper pipe and is connected, set up the piston in the pressurized-water jar with servo motor connects, just the piston cover is established on servo motor's the output surface. The beneficial effects are that: the utility model discloses can measure the volume change of asphalt concrete in the deformation process, know whether specific asphalt concrete porosity has the possibility of exceeding 3%, volume change's size and development process, provide the judgement foundation for engineering personnel, and the accuracy of test result is high.
Description
Technical Field
The utility model relates to an asphalt concrete prevention of seepage technical field in hydraulic and hydroelectric engineering particularly relates to an asphalt concrete deformation test device.
Background
Asphalt concrete has excellent anti-seepage performance and foundation deformation adaptability, and is widely applied to various water conservancy and hydropower anti-seepage projects, wherein an asphalt concrete core wall dam is one of application forms, the asphalt concrete core wall deforms due to foundation settlement, water pressure effect and the like during construction and operation, and the volume of the asphalt concrete changes during deformation, so that the porosity of the asphalt concrete changes. The core condition for asphalt concrete barrier is that its porosity is less than 3%, and once it exceeds 3% due to deformation of asphalt concrete, it is possible to disable the barrier of asphalt concrete, with even more serious consequences. It is therefore necessary to know experimentally the volume change of asphalt concrete during deformation.
At present, there is no known and unified method for measuring the volume change of asphalt concrete in the deformation process, and based on this, the utility model designs a test device for measuring the volume change of asphalt concrete in the deformation process, so as to solve the above problems.
Practical content
To the problem among the related art, the utility model provides an asphalt concrete deformation test device can know its volume's in deformation process change size and development process, provides the judgement foundation for engineering personnel.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an asphalt concrete deformation test device comprises a pressure chamber, a water pressing cylinder, a servo motor and a pressure head; the device is characterized in that water and a test piece to be tested are arranged in the pressure chamber, the pressure head is arranged at the top of the pressure chamber in a penetrating mode, the pressure chamber is connected with the water pressing cylinder through a copper pipe, a piston is arranged in the water pressing cylinder and connected with the servo motor, and the piston is sleeved on the outer surface of the output end of the servo motor.
The hydraulic cylinder is arranged on the inner side of the workbench, the pressure chamber is connected with the hydraulic cylinder, the hydraulic cylinder is connected with the working table, the top end of the workbench is fixedly arranged in the pressure chamber, the cavity is formed in the workbench, and the servo motor is fixed at the inner top end of the workbench.
The top end of the pressure chamber is fixedly penetrated with a liquid level probe, and the top end of the pressure chamber is provided with a water inlet pipeline with a control valve.
The beneficial effects are that:
the utility model discloses can measure the volume change of asphalt concrete in the deformation process, know whether specific asphalt concrete porosity has the possibility of exceeding 3%, volume change's size and development process, provide the judgement foundation for engineering personnel, and the accuracy of test result is high.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an asphalt concrete deformation test apparatus according to an embodiment of the present utility model;
FIG. 2 is a schematic front view of an asphalt concrete deformation testing apparatus according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of a test flow of an asphalt concrete deformation test apparatus according to an embodiment of the present utility model.
In the figure:
1. a pressure chamber; 2. a water pressing cylinder; 3. a servo motor; 4. a pressure head; 5. a test piece to be tested; 6. copper pipe; 7. a piston; 8. a work table; 9. a liquid level probe.
Detailed Description
The utility is further described below with reference to the drawings and detailed description: in order that the above objects, features and advantages of the utility model will be more clearly understood, a further description of the utility model will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced otherwise than as described herein, and thus the present utility model is not limited to the specific embodiments of the present disclosure.
As shown in fig. 1-2, an asphalt concrete deformation test apparatus according to an embodiment of the present utility model includes a pressure chamber 1, a water-pressing cylinder 2, a servo motor 3, and a pressure head 4; be provided with water and test piece 5 to be measured in the pressure chamber 1, just the top runs through in the pressure chamber 1 is equipped with pressure head 4, pressure chamber 1 with the pressurized-water jar 2 passes through copper pipe 6 to be connected, set up in the pressurized-water jar 2 piston 7 with servo motor 3 is connected, just piston 7 cover is established on servo motor 3's the output surface. The pressure chamber 1 and the water pressure cylinder 2 are respectively and fixedly provided with the top end of the workbench 8, a cavity is formed in the workbench 8, and the servo motor 3 is fixed at the inner top end of the workbench 8. The top end of the pressure chamber 1 is fixedly penetrated with a liquid level probe 9, and the top end of the pressure chamber 1 is provided with a water inlet pipeline with a control valve.
As shown in fig. 3, in specific use, the asphalt concrete deformation test comprises the following steps: step one, placing the test piece 5 to be tested of asphalt concrete into the pressure chamber 1; step two, water is added into the pressure chamber 1 through a water inlet pipeline, so that the liquid level and the liquid level probe 9 are in a state of just contacting; thirdly, pressing down the pressure head 4 to deform the to-be-tested test piece 5 of the asphalt concrete, and gradually increasing the liquid level; and fourthly, when the liquid level probe 9 contacts water, the servo motor 3 is connected, the piston 7 in the water pressing cylinder 2 is driven to descend, water in the pressure chamber 1 is pumped into the water pressing cylinder 2, the liquid level in the pressure chamber 1 is lowered, and when the liquid level is lowered to be disconnected with the liquid level probe 9, the servo motor 3 is powered off, and water pumping is stopped.
When the method is specifically applied, the pressure head displacement value S1 and the piston displacement value S2 at different moments t are collected, and the volume change of the asphalt concrete test piece at different moments can be obtained according to the pressure head radius R1 and the piston radius R2 by the following calculation; v (t) =pi R2 2 *S2-πR1 2 * S1, performing S1; calculating the volume change of the asphalt concrete test piece at a certain deformation, verifying whether the porosity of the asphalt concrete test piece exceeds 3%, and judging whether the asphalt concrete seepage prevention can fail; and the test piece to be tested of the asphalt concrete is obtained through indoor molding or on-site coring. And the ram is loaded at a set loading rate.
In practical application process, the utility model discloses can measure the volume change of asphalt concrete in the deformation process, know whether specific asphalt concrete porosity has the possibility of exceeding 3%, volume change's size and development process, provide the judgement foundation for engineering personnel, and the accuracy of test result is high.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The asphalt concrete deformation test device is characterized by comprising a pressure chamber (1), a water pressing cylinder (2), a servo motor (3) and a pressure head (4);
the device comprises a pressure chamber (1), a copper pipe (6) is arranged in the pressure chamber (1), water and a test piece (5) to be tested are arranged in the pressure chamber (1), the pressure head (4) is arranged at the inner top of the pressure chamber (1) in a penetrating mode, the pressure chamber (1) is connected with a water pressing cylinder (2) through the copper pipe (6), a piston (7) is arranged in the water pressing cylinder (2) and connected with a servo motor (3), and the piston (7) is sleeved on the outer surface of the output end of the servo motor (3).
2. The asphalt concrete deformation test apparatus according to claim 1, wherein the pressure chamber (1) and the water pressing cylinder (2) are both fixedly provided with the top end of a workbench (8), a cavity is formed in the workbench (8), and the servo motor (3) is fixed at the inner top end of the workbench (8).
3. The asphalt concrete deformation test apparatus according to claim 2, wherein a liquid level probe (9) is fixedly arranged at the top end of the pressure chamber (1), and a water inlet pipeline with a control valve is arranged at the top end of the pressure chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222818449.1U CN219065213U (en) | 2022-10-25 | 2022-10-25 | Asphalt concrete deformation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222818449.1U CN219065213U (en) | 2022-10-25 | 2022-10-25 | Asphalt concrete deformation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219065213U true CN219065213U (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222818449.1U Active CN219065213U (en) | 2022-10-25 | 2022-10-25 | Asphalt concrete deformation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219065213U (en) |
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2022
- 2022-10-25 CN CN202222818449.1U patent/CN219065213U/en active Active
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