CN111116074A - Recycled aggregate strengthening device and method based on reagent immersion - Google Patents
Recycled aggregate strengthening device and method based on reagent immersion Download PDFInfo
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- CN111116074A CN111116074A CN201911407341.XA CN201911407341A CN111116074A CN 111116074 A CN111116074 A CN 111116074A CN 201911407341 A CN201911407341 A CN 201911407341A CN 111116074 A CN111116074 A CN 111116074A
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- vacuum tank
- vacuum
- sealing cover
- recycled aggregate
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
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- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the field of building materials, and particularly relates to a recycled aggregate strengthening device and method based on reagent immersion. Comprises a vacuum pump, an air pressure pipe, a sealing cover, a vacuum tank and a console; the vacuum pump is connected with the vacuum tank through a pneumatic tube, and the sealing cover is arranged at the top of the vacuum tank so that the vacuum tank is in a completely sealed state when exhausting; the vacuum tank is arranged on the console, and the console is connected with the vacuum pump. According to the invention, the vacuum pump is used for pumping air out of the vacuum tank, so that the pressure in the vacuum tank is reduced, and the reagent can enter the material inner gap of the porous material more smoothly; not only can reduce the time for reinforcing the recycled aggregate, but also can improve the reinforcing effect of the recycled aggregate.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a recycled aggregate strengthening device and method based on reagent immersion.
Background
In recent years, the construction industry has entered a period of rapid development, concrete is largely consumed as a main construction material, the contradiction between the non-regenerability of aggregate and the large-scale demand of aggregate for construction is increasingly prominent, and the price of natural aggregate is rising. In order to solve the huge demand of large-scale construction on concrete and the resource and environmental problems caused by the demand, the recycled aggregate concrete technology is developed and applied to a certain extent.
The aggregate acts as a framework in the concrete to transmit stresses, and largely determines the workability of the concrete mixture, the mechanical properties of the hardened concrete, and the durability of the concrete structure. Compared with natural aggregate, the recycled aggregate has high porosity and low strength, so that the recycled concrete has low strength, can only be applied to places with low strength requirement, and seriously restricts the application and popularization of the recycled concrete, therefore, the reinforced recycled aggregate has an important effect on improving the strength of the recycled concrete. The common strengthening methods are to treat the recycled aggregate by a permeable crystalline material, to perform treatments such as dipping, rinsing, drying, etc. on the recycled coarse aggregate with chemical slurry, or to directly fill the voids of the recycled coarse aggregate, but these methods can only strengthen the surface thereof, and it is difficult for a reagent to really enter the inner voids.
Disclosure of Invention
The invention aims to provide a recycled aggregate strengthening device and a strengthening method based on reagent immersion.
The technical solution for realizing the purpose of the invention is as follows: a recycled aggregate strengthening device based on reagent immersion comprises a vacuum tank, a sealing cover, a pneumatic tube, a vacuum pump and a console;
the recycled aggregate is placed in a vacuum tank, the vacuum tank is provided with a sealing cover in a matching mode, the vacuum pump is connected with the vacuum tank through a pneumatic tube, and the control console is connected with the vacuum pump.
Furthermore, the vacuum tank is a cylinder, and the vacuum tank is made of stainless steel.
Furthermore, the diameter of the bottom of the vacuum tank is 15-35cm, the height is 30-50cm, and the wall thickness is 2-4 mm.
Furthermore, the sealing cover is disc-shaped, a concave concentric ring is arranged on the surface of the sealing cover corresponding to the inner part of the vacuum tank and filled with a rubber ring, and the inner diameter of the rubber ring is the same as that of the vacuum tank.
Furthermore, the thickness of the sealing cover is 4-6mm, the depth of the concave concentric ring is 4-6mm, the width of the concave concentric ring is 2-4mm, the thickness of the rubber ring is 1-3mm, and the sealing cover covers the top of the vacuum tank in a closed mode.
Furthermore, the material of the sealing cover is organic glass.
Furthermore, the control console is provided with a switch, a pressure display screen, a start button, a stop button, a pressure relief button and a pressure relief speed regulation knob.
The method for reinforcing the recycled aggregate by using the device comprises the following steps:
step (1): before the work begins, injecting reagents into the vacuum tank until the liquid level reaches 1/3 of the height of the vacuum tank, slowly pouring the recycled aggregate into the vacuum tank, placing the vacuum tank on a console, and covering a cover of a sealing cover;
step (2): opening a switch of the console, pressing a start button, displaying the pressure in the vacuum tank on a pressure display screen in real time, and gradually pumping out air in the vacuum tank by the vacuum pump;
and (3): when the pressure in the vacuum tank reaches the target pressure, the pumping is automatically stopped, when no obvious air bubbles emerge from the reagent, a pressure relief button is pressed, the sealing cover is taken down after the pressure relief is stopped, and the recycled aggregate is taken out;
and (4): and after the test, pouring out the residual reagent in the vacuum tank, cleaning the residual reagent in the vacuum tank, and carrying out subsequent test treatment on the recycled aggregate.
Further, the target pressure is 3.75 kPa.
Further, the air exhaust speed of the vacuum pump (11) in the step (2) is 1L/s; the pressure relief speed in the step (3) is 0.5-1.5L/s.
Compared with the prior art, the invention has the remarkable advantages that:
according to the invention, the vacuum negative pressure is utilized to help the reagent to enter the inner gap of the porous material, when the vacuum is pumped, the air in the gap of the recycled aggregate is unstable, so that the pressure difference is formed, and then the air comes out, so that the time for reinforcing the recycled aggregate can be reduced, and the reinforcing effect of the recycled aggregate can be improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the reinforcing apparatus of the present invention.
Figure 2 is a schematic view of the seal cap of the present invention.
Description of reference numerals:
1-switch, 2-pressure display screen, 3-start button, 4-stop button, 5-pressure relief button, 6-pressure relief speed regulation knob, 7-console, 8-vacuum tank, 9-sealing cover, 10-pneumatic tube, 11-vacuum pump and 12-wire.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
As shown in fig. 1-2, a material strengthening device based on reagent immersion of the present invention comprises a vacuum pump 11, a pneumatic tube 10, a sealing cover 9, a vacuum tank 8, and a console 7, the console buttons comprising a switch 1, a pressure display screen 2, a start button 3, a stop button 4, a pressure relief button 5, and a pressure relief speed knob 6.
The vacuum pump 11 is connected with the vacuum tank 8 through a pneumatic tube 10, and the sealing cover 9 is arranged at the top of the vacuum tank 8, so that the vacuum tank 8 is in a completely sealed state when the vacuum pump 11 pumps air; the vacuum tank 8 is placed on the console 7, and the console 7 is connected with the vacuum pump 11 through an electric wire 12.
The vacuum tank 8 is a cylinder, the console 7 controls the vacuum pump 11 by using the wire 12, the pressure in the vacuum tank 8 is displayed on the pressure display screen 2 at any time, the pressure relief speed regulation knob 6 is used for controlling the pressure relief speed, the switch 1 is used for starting the instrument, and the start button 3 is used for starting air extraction.
The sealing cover 9 is disc-shaped, the thickness of the sealing cover is 5mm, the radius of the sealing cover is 11cm, the sealing cover 9 is provided with a concave concentric ring with the depth of 5mm and the width of 3mm relative to the inner surface of the vacuum tank 8, the concave concentric ring is filled with a rubber ring, the thickness of the rubber ring is 2mm, and the sealing cover covers the top of the vacuum tank 8 in a closed mode.
The material of sealed lid 9 is organic glass, and the condition in the vacuum tank 8 can be seen clearly to vacuum pump 11 during operation.
The diameter of the bottom of the vacuum tank 8 is 20cm, the height is 40cm, the wall thickness is 2mm, and the vacuum tank 8 is made of stainless steel.
When the vacuum pump 11 pumps air until the pressure in the vacuum tank 8 reaches 3.75kPa, the target pressure is reached.
The pumping speed of the vacuum pump 11 is 1L/s, and the pressure relief speed is 0.5-1.5L/s.
The working process is as follows:
before the work begins, water glass solution is injected into the vacuum tank 8 until the liquid level reaches about 1/3 of the height of the vacuum tank 8, the recycled aggregate is slowly poured into the vacuum tank 8, the vacuum tank 8 is placed on the control console 7, the cover of the sealing cover 9 is covered, the switch 1 is opened, the starting button 3 is pressed, the pressure intensity in the vacuum tank 8 is displayed on the display screen 2 in real time, and the vacuum pump 11 is waited for gradually pumping out air in the vacuum tank 8. When the pressure in the vacuum tank 8 reaches 3.75kPa, the pumping pressure is automatically stopped, the pressure reaches the target pressure, and when no obvious air bubbles emerge from the water glass solvent, the pressure relief button 5 is pressed, the sealing cover 9 is taken down after the pressure relief is stopped, and the recycled aggregate is taken out.
After the test, the residual reagent in the vacuum tank 8 is poured out and reasonably disposed, the residual reagent in the vacuum tank 8 is cleaned, and the recycled aggregate is subjected to subsequent test treatment.
According to the invention, the vacuum negative pressure is utilized to help the reagent to enter the inner gap of the porous material, so that the time for reinforcing the recycled aggregate can be reduced, and the reinforcing effect of the recycled aggregate can be improved.
Claims (10)
1. A recycled aggregate strengthening device based on reagent immersion is characterized by comprising a vacuum tank (8), a sealing cover (9), a pneumatic tube (10), a vacuum pump (11) and a console (7);
the recycled aggregate is placed in a vacuum tank (8), the vacuum tank (8) is provided with a sealing cover (9), the vacuum pump (11) is connected with the vacuum tank (8) through a pneumatic tube (10), and the console (7) is connected with the vacuum pump (11).
2. The device according to claim 1, characterized in that the vacuum tank (8) is a cylinder and the vacuum tank (8) is made of stainless steel.
3. The device according to claim 2, characterized in that the vacuum tank (8) has a bottom diameter of 15-35cm, a height of 30-50cm and a wall thickness of 2-4 mm.
4. Device according to claim 1, characterized in that the sealing cover (9) is shaped like a disc, and that the sealing cover (9) is provided with a concentric ring recessed in relation to the inner surface of the vacuum container (8) and filled with a rubber band having the same inner diameter as the vacuum container (8).
5. The device according to claim 4, characterized in that the sealing cover has a thickness of 4-6mm, a depth of the concave concentric ring of 4-6mm and a width of 2-4mm, the rubber band has a thickness of 1-3mm and covers the top of the vacuum tank (8) in a closed manner.
6. Device according to claim 5, characterized in that the material of the sealing cover (9) is plexiglas.
7. The device according to claim 1, characterized in that the console (7) is provided with a switch (1), a pressure display screen (2), a start button (3), a stop button (4), a pressure relief button (5) and a pressure relief speed knob (6).
8. A method of recycled aggregate fortification using the apparatus of any one of claims 1 to 7, comprising the steps of:
step (1): before the work begins, injecting a reagent into the vacuum tank (8) until the liquid level reaches 1/3 of the height of the vacuum tank (8), slowly pouring the recycled aggregate into the vacuum tank (8), placing the vacuum tank (8) on the console (7), and covering the cover of the sealing cover (9);
step (2): a switch (1) of a console (7) is turned on, a starting button (3) is pressed, the pressure in a vacuum tank (8) is displayed on a pressure display screen (2) in real time, and a vacuum pump (11) gradually pumps air in the vacuum tank (8);
and (3): when the pressure in the vacuum tank (8) reaches the target pressure, the pumping is automatically stopped, when no obvious air bubbles emerge from the reagent, the pressure relief button (5) is pressed, the sealing cover (9) is taken down after the pressure relief is stopped, and the recycled aggregate is taken out;
and (4): and after the test, pouring out the residual reagent in the vacuum tank (8), cleaning the residual reagent in the vacuum tank (8), and carrying out subsequent test treatment on the recycled aggregate.
9. The method of claim 8, wherein the target pressure is 3.75 kPa.
10. The method according to claim 8, characterized in that, in the step (2), the pumping speed of the vacuum pump (11) is 1L/s; the pressure relief speed in the step (3) is 0.5-1.5L/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911407341.XA CN111116074A (en) | 2019-12-31 | 2019-12-31 | Recycled aggregate strengthening device and method based on reagent immersion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911407341.XA CN111116074A (en) | 2019-12-31 | 2019-12-31 | Recycled aggregate strengthening device and method based on reagent immersion |
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| Publication Number | Publication Date |
|---|---|
| CN111116074A true CN111116074A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911407341.XA Pending CN111116074A (en) | 2019-12-31 | 2019-12-31 | Recycled aggregate strengthening device and method based on reagent immersion |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020050233A1 (en) * | 1999-03-15 | 2002-05-02 | Balkum Earl T. | Aggregate using recycled plastics |
| CN104045251A (en) * | 2014-05-29 | 2014-09-17 | 湖南大学 | Method for carbon dioxide strengthening of recycled concrete aggregate |
| CN106277885A (en) * | 2016-09-20 | 2017-01-04 | 福州大学 | One utilizes CO2the device of intensifying regenerating aggregate and intensifying method thereof |
| CN206974638U (en) * | 2017-06-23 | 2018-02-06 | 广东艾斯瑞仪器科技有限公司 | A kind of vacuum sealing analyzer |
| CN108726910A (en) * | 2018-07-13 | 2018-11-02 | 郑州航空工业管理学院 | It is a kind of to utilize CO2The method of intensifying regenerating concrete coarse aggregate |
| CN109231881A (en) * | 2018-11-20 | 2019-01-18 | 罗永山 | A method of the dedicated aggregate of pavement asphalt is prepared using building waste |
| CN109516707A (en) * | 2018-12-29 | 2019-03-26 | 湖南大学 | A kind of preparation method for the recycled aggregate inhibiting alkali-aggregate reaction |
-
2019
- 2019-12-31 CN CN201911407341.XA patent/CN111116074A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020050233A1 (en) * | 1999-03-15 | 2002-05-02 | Balkum Earl T. | Aggregate using recycled plastics |
| CN104045251A (en) * | 2014-05-29 | 2014-09-17 | 湖南大学 | Method for carbon dioxide strengthening of recycled concrete aggregate |
| CN106277885A (en) * | 2016-09-20 | 2017-01-04 | 福州大学 | One utilizes CO2the device of intensifying regenerating aggregate and intensifying method thereof |
| CN206974638U (en) * | 2017-06-23 | 2018-02-06 | 广东艾斯瑞仪器科技有限公司 | A kind of vacuum sealing analyzer |
| CN108726910A (en) * | 2018-07-13 | 2018-11-02 | 郑州航空工业管理学院 | It is a kind of to utilize CO2The method of intensifying regenerating concrete coarse aggregate |
| CN109231881A (en) * | 2018-11-20 | 2019-01-18 | 罗永山 | A method of the dedicated aggregate of pavement asphalt is prepared using building waste |
| CN109516707A (en) * | 2018-12-29 | 2019-03-26 | 湖南大学 | A kind of preparation method for the recycled aggregate inhibiting alkali-aggregate reaction |
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Application publication date: 20200508 |