CN211179711U - Air entraining agent air entraining performance testing device under low-pressure environment - Google Patents
Air entraining agent air entraining performance testing device under low-pressure environment Download PDFInfo
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- CN211179711U CN211179711U CN201921760554.6U CN201921760554U CN211179711U CN 211179711 U CN211179711 U CN 211179711U CN 201921760554 U CN201921760554 U CN 201921760554U CN 211179711 U CN211179711 U CN 211179711U
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- air entraining
- stirring
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- pressure environment
- entraining agent
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Abstract
The utility model provides an air entraining agent bleed performance test device under low atmospheric pressure environment can set for different low atmospheric pressure environment and simulation concrete mixing parameter and effect of vibrating to this air entraining performance to the air entraining agent tests, thereby obtains air entraining agent bleed performance under the low atmospheric pressure environment, is favorable to providing technical support for the frost resistant air entraining concrete design in plateau district, a serial communication port, including the shaking table, the fixed stirred vessel that sets up on the shaking table, stirred vessel passes through the exhaust tube and connects the vacuum pump, be provided with agitator motor on stirred vessel's the sealed lid, agitator motor passes through the puddler and connects stirring vane in the stirred vessel.
Description
Technical Field
The utility model relates to an air entraining agent bleed performance test technique, especially an air entraining agent bleed performance test device under low atmospheric pressure environment, through exhaust tube with stirred tank and vacuum pump connection, and set up the combination of shaking table and stirred tank, can set for different low atmospheric pressure environment and simulate concrete mixing parameter and effect of vibrating, test the air entraining performance of air entraining agent with this, thereby obtain air entraining agent bleed performance under the low atmospheric pressure environment, be favorable to providing technical support for the frost resisting air entraining concrete design in plateau district.
Background
The air entraining agent is added to introduce a large amount of micro bubbles into the concrete, so that frost heaving pressure generated inside the material during freeze thawing can be relieved, and the measure becomes a common measure for improving the frost resistance of the concrete. The air entraining capacity of the air entraining agent can be generally tested by simulating the concrete mixing parameters and the vibrating action after the air entraining agent is added to the concrete in the mixing container, and then the test result is obtained. However, the inventor finds that the air entraining performance of the air entraining agent in the prior art is based on the index under the normal atmospheric pressure, namely, the environment of 1 atmosphere in plain areas. This makes this performance index unsuitable for use in plateau regions. For example, the climate environment in the Qinghai-Tibet plateau area is severe, and particularly, low temperature and large temperature difference between day and night frequently occur, so that the concrete is frozen and thawed to damage, and the structural safety is further influenced. The working principle of the air entraining agent is that air bubbles are easily generated during concrete stirring by reducing the surface tension of the liquid, but the air content is seriously insufficient due to low air pressure in plateau areas, so that the air entraining capability of the air entraining agent in plateau areas is greatly reduced compared with that in plateau areas. The inventor thinks that if the mixing container is connected with the vacuum pump through the exhaust tube and the combination of the vibration table and the mixing container is arranged, different low-pressure environments can be set and concrete mixing parameters and vibration effects can be simulated, and the air entraining performance of the air entraining agent can be tested, so that the air entraining performance of the air entraining agent in the low-pressure environment can be obtained, and the technical support can be provided for the design of frost-resistant air entraining concrete in a plateau area. In view of the above, the present inventors have completed the present invention.
SUMMERY OF THE UTILITY MODEL
The utility model discloses defect or not enough to exist among the prior art, a bleed air performance test device under low atmospheric pressure environment is provided, through exhaust tube with stirred tank and vacuum pump connection, and set up shaking table and stirred tank's combination, can set for different low atmospheric pressure environment and simulate concrete mixing parameter and vibration effect, test the bleed air performance of bleed air with this, thereby obtain bleed air performance under the low atmospheric pressure environment, be favorable to providing technical support for the frost-resistant bleed concrete design in plateau district.
The technical scheme of the utility model as follows:
the device is characterized by comprising a vibration table, wherein a stirring container is fixedly arranged on the vibration table and is connected with a vacuum pump through an exhaust pipe, a stirring motor is arranged on a sealing cover of the stirring container, and the stirring motor is connected with stirring blades in the stirring container through a stirring rod.
The air exhaust pipe is communicated with the inner space of the stirring container through the upper part of the side wall of the stirring container.
And the air exhaust pipe is provided with a barometer.
The vibrating table comprises a vibrating table base and a vibrating table clamping groove disc, the vibrating table base supports the vibrating table clamping groove disc through a vibrating spring, a clamping groove is formed in the top surface of the vibrating table clamping groove disc, and the bottom of the stirring container is embedded into the clamping groove.
And an excitation source is arranged at the bottom of the clamping groove disc of the vibration table and is connected with a vibration controller through a second connecting circuit.
The vibration source adopts a vibration motor.
The stirring motor is connected with the stirring controller through a first connecting circuit.
The shaking table is fixed on the anti vibration base, be provided with first pole setting and second pole setting on the anti vibration base, stirred vessel is located between first pole setting and the second pole setting, stirred vessel's lower half is provided with first location cuff, stirred vessel's first half is provided with second location cuff, first location cuff is connected first pole setting, second location cuff is connected the second pole setting.
The stirring controller is fixed on the first vertical rod.
The technical effects of the utility model are as follows: the utility model relates to an air entraining agent bleed capability test device under low atmospheric pressure environment can set for arbitrary low atmospheric pressure value, can realize different mixing frequency and churning time simultaneously with the influence of simulation concrete mixing parameter to air entraining agent bleed ability. In addition, different vibration frequencies and vibration time can be set to simulate the influence of vibration on bubbles in concrete pouring and forming. The device is convenient to use, convenient to dismantle, and the reliability is high, and the evaluation means is comprehensive, can evaluate the bleed performance of bleed agent under the low atmospheric pressure environment comprehensively rationally.
When the air entraining performance of the air entraining agent is evaluated, a foaming test is generally carried out, and the foam entraining and foam stabilizing performance of the air entraining agent is evaluated by observing the height of bubbles and the loss time of the bubbles. Therefore, when the air entraining agent for the plateau areas is developed, the air entraining capability of the air entraining agent under different air pressure conditions needs to be tested, and in addition, the concrete needs to be vibrated in the pouring and forming process, and the vibration action can enable air bubbles in the concrete to escape, merge or destroy. Therefore, in order to more reasonably evaluate the air entraining capability of the air entraining agent under low air pressure, a device capable of testing the air entraining performance of the air entraining agent under different low air pressure conditions needs to be invented. The utility model discloses this demand can be satisfied.
The development of the air entraining agent suitable for the plateau area is one of the key technologies required for improving the frost resistance and durability of the concrete in the plateau area at present. The utility model discloses can provide necessary technical support for this reason.
Drawings
Fig. 1 is a schematic structural diagram of an air entraining agent air entraining performance testing device under a low-pressure environment.
The reference numbers are listed below: 11-a stirring motor; 12-a stirred vessel; 13-a stirring rod; 14-stirring blades; 15-sealing cover; 16-a stirring controller; 17-a first connection line; 21-a vacuum pump; 22-an extraction tube; 23-a barometer; 31-a vibration controller; 32-excitation source (for example, vibration motor is an excitation source with power source and vibration source combined into one body, vibration motor is that two ends of rotor shaft are respectively equipped with a group of adjustable eccentric block, and the centrifugal force produced by high-speed rotation of shaft and eccentric block is used to obtain excitation force); 33-a vibration table base; 34-a vibration spring; 35-a vibration table clamping groove disc; 36-a second connection line; 41-a first upright rod; 42-a second upright post; 43-a first positioning cuff; 44-a second positioning ferrule; 45-anti vibration base.
Detailed Description
The present invention will be described with reference to the accompanying drawings (fig. 1).
Fig. 1 is a schematic structural diagram of an air entraining agent air entraining performance testing device under a low-pressure environment. As shown in fig. 1, the device for testing the air entraining performance of the air entraining agent in the low-pressure environment comprises a vibration table, wherein a stirring container 12 is fixedly arranged on the vibration table, the stirring container 12 is connected with a vacuum pump 21 through an exhaust pipe 22, a stirring motor 11 is arranged on a sealing cover 15 of the stirring container 12, and the stirring motor 11 is connected with a stirring blade 14 in the stirring container 12 through a stirring rod 13. The suction pipe 22 communicates with the inner space of the agitation vessel 12 through the upper portion of the side wall of the agitation vessel 12. An air pressure gauge 23 is arranged on the extraction pipe 22. The shaking table comprises a shaking table base 33 and a shaking table clamping groove disc 35, the shaking table base 33 supports the shaking table clamping groove disc 35 through a vibrating spring 34, a clamping groove is formed in the top surface of the shaking table clamping groove disc 35, and the bottom of the stirring container 12 is embedded into the clamping groove. The bottom of the vibration table slot disc 35 is provided with an excitation source 32, and the excitation source 32 is connected with the vibration controller 31 through a second connecting line 36. The vibration source 32 is a vibration motor (the vibration motor is a vibration source with a power source and a vibration source combined into a whole, the vibration motor is provided with a group of adjustable eccentric blocks at two ends of a rotor shaft respectively, and the vibration force is obtained by utilizing the centrifugal force generated by the high-speed rotation of the shaft and the eccentric blocks). The stirring motor 11 is connected to a stirring controller 16 through a first connection line 17. The shaking table is fixed on an anti-vibration base 45, a first vertical rod 41 and a second vertical rod 42 are arranged on the anti-vibration base 45, the stirring container 12 is located between the first vertical rod 41 and the second vertical rod 42, a first positioning hoop 43 is arranged on the lower half part of the stirring container 12, a second positioning hoop 44 is arranged on the upper half part of the stirring container 12, the first positioning hoop 43 is connected with the first vertical rod 41, and the second positioning hoop 44 is connected with the second vertical rod 42. The stirring controller 16 is fixed to the first vertical rod 41.
The utility model relates to an air entraining agent bleed performance test device under low atmospheric pressure environment includes 4 systems, is mixing system, depressurization system, vibration system and positioning system respectively.
The stirring system comprises a stirring motor 11, a stirring container, a stirring rod, a stirring blade 14, a sealing cover 15, a stirring controller 16 and the like. The air entraining process of the air entraining agent solution is completed by a stirring system, wherein the solution to be stirred, mixed with the air entraining agent, is poured into a stirring container 12, and is sealed by a sealing cover 15, and then a stirring motor 11, a stirring rod 13 and a stirring blade 14 are installed. The stirring controller 16 sets different stirring times and different rotating speeds of the stirring rod to stir the solution to be stirred mixed with the air entraining agent.
The pressure reduction system comprises a vacuum pump 21, an exhaust tube 22, a barometer 23 and the like. The air pressure of the air entraining agent solution during stirring is achieved by a pressure reduction system, wherein a vacuum pump 21 reduces the air pressure in the stirring container 12 to a specified air pressure value through an exhaust pipe 22, and the air pressure value in the stirring container 12 is displayed by an air pressure gauge 23.
The vibration system comprises a vibration controller 31, a vibration source 32, a vibration table base 33, a vibration spring 34, a vibration table groove disc 35 and the like. The vibration system is used for realizing the changes of different vibration frequencies and the height of the bubbles in time after the air entraining agent solution is stirred. The vibration controller 31 can set different vibration frequencies and vibration times, so as to vibrate the mixing container 12 placed in the clamping groove of the vibration table by controlling the excitation source 32, the vibration spring 34 and the vibration table base 33.
The positioning system comprises a first upright rod 41, a second upright rod 42, a first positioning hoop 43, a second positioning hoop 44, an anti-vibration base 45 and the like. The positioning system is primarily used to secure the mixing container 12 so as to ensure that the mixing container 12 is in a stable condition during the mixing or vibrating process. Wherein, the first upright rod 41 and the second upright rod 42 are respectively provided with a first positioning hoop 43 and a second positioning hoop 44, and the bottom of the device is provided with an anti-vibration base 45 so as to slow down the impact of the device on the test bed in the stirring or vibrating process.
It is pointed out here that the above description is helpful for the person skilled in the art to understand the invention, but does not limit the scope of protection of the invention. Any such equivalents, modifications and/or omissions as may be made without departing from the spirit and scope of the invention may be resorted to.
Claims (9)
1. The device is characterized by comprising a vibration table, wherein a stirring container is fixedly arranged on the vibration table and is connected with a vacuum pump through an exhaust pipe, a stirring motor is arranged on a sealing cover of the stirring container, and the stirring motor is connected with stirring blades in the stirring container through a stirring rod.
2. The air entraining agent air entraining performance test device in the low air pressure environment of claim 1, wherein the air exhaust pipe is communicated with the inner space of the stirring container through the upper part of the side wall of the stirring container.
3. The device for testing the air entraining agent air entraining performance under the low air pressure environment according to the claim 1 is characterized in that an air pressure gauge is arranged on the air suction pipe.
4. The device for testing the air entraining agent air entraining performance in the low air pressure environment according to the claim 1 is characterized in that the vibration table comprises a vibration table base and a vibration table clamping groove disc, the vibration table base supports the vibration table clamping groove disc through a vibration spring, a clamping groove is arranged on the top surface of the vibration table clamping groove disc, and the bottom of the stirring container is embedded into the clamping groove.
5. The device for testing the air entraining agent air entraining performance in the low air pressure environment is characterized in that an excitation source is arranged at the bottom of the groove clamping disc of the vibration table and is connected with a vibration controller through a second connecting line.
6. The device for testing the air entraining agent air entraining performance in the low air pressure environment according to the claim 5 is characterized in that the excitation source adopts a vibration motor.
7. The device for testing the air entraining agent air entraining performance in the low air pressure environment according to the claim 1 is characterized in that the stirring motor is connected with the stirring controller through a first connecting line.
8. The device for testing the air entraining agent air entraining performance in the low-pressure environment according to claim 1 is characterized in that the vibration table is fixed on an anti-vibration base, a first vertical rod and a second vertical rod are arranged on the anti-vibration base, the stirring container is positioned between the first vertical rod and the second vertical rod, a first positioning hoop is arranged on the lower half part of the stirring container, a second positioning hoop is arranged on the upper half part of the stirring container, the first positioning hoop is connected with the first vertical rod, and the second positioning hoop is connected with the second vertical rod.
9. The device for testing the air entraining agent air entraining performance in the low air pressure environment according to the claim 7 is characterized in that the stirring controller is fixed on the first vertical rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921760554.6U CN211179711U (en) | 2019-10-18 | 2019-10-18 | Air entraining agent air entraining performance testing device under low-pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921760554.6U CN211179711U (en) | 2019-10-18 | 2019-10-18 | Air entraining agent air entraining performance testing device under low-pressure environment |
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| CN211179711U true CN211179711U (en) | 2020-08-04 |
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| CN201921760554.6U Expired - Fee Related CN211179711U (en) | 2019-10-18 | 2019-10-18 | Air entraining agent air entraining performance testing device under low-pressure environment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763379A (en) * | 2020-12-24 | 2021-05-07 | 科之杰新材料集团有限公司 | Method for evaluating air entraining performance of concrete admixture |
| CN113804864A (en) * | 2021-10-13 | 2021-12-17 | 江苏奥莱特新材料股份有限公司 | Method for testing air entraining performance of air entraining agent for concrete |
| CN114577695A (en) * | 2022-01-14 | 2022-06-03 | 西安理工大学 | Device and method for monitoring pore evolution before initial setting of hydraulic concrete in high and cold regions |
-
2019
- 2019-10-18 CN CN201921760554.6U patent/CN211179711U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112763379A (en) * | 2020-12-24 | 2021-05-07 | 科之杰新材料集团有限公司 | Method for evaluating air entraining performance of concrete admixture |
| CN113804864A (en) * | 2021-10-13 | 2021-12-17 | 江苏奥莱特新材料股份有限公司 | Method for testing air entraining performance of air entraining agent for concrete |
| CN114577695A (en) * | 2022-01-14 | 2022-06-03 | 西安理工大学 | Device and method for monitoring pore evolution before initial setting of hydraulic concrete in high and cold regions |
| CN114577695B (en) * | 2022-01-14 | 2023-10-27 | 西安理工大学 | Device and method for monitoring evolution of pores of hydraulic concrete in alpine region before initial setting |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200804 Termination date: 20211018 |