CN221038567U - Anti-segregation device - Google Patents
Anti-segregation device Download PDFInfo
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- CN221038567U CN221038567U CN202322872564.1U CN202322872564U CN221038567U CN 221038567 U CN221038567 U CN 221038567U CN 202322872564 U CN202322872564 U CN 202322872564U CN 221038567 U CN221038567 U CN 221038567U
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- 238000005204 segregation Methods 0.000 title claims abstract description 35
- 239000000463 material Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 3
- 238000009825 accumulation Methods 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000012258 stirred mixture Substances 0.000 abstract description 2
- 239000008188 pellet Substances 0.000 abstract 1
- 238000010008 shearing Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 16
- 239000010881 fly ash Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 6
- 239000004567 concrete Substances 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004574 high-performance concrete Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses an anti-segregation device, which comprises at least two baffles and handles; at least two baffles divide the volume cylinder at the height from the circumference into at least two independent parts; at least two baffles are uniformly arranged on the side wall of the first end of the handle, and the axial lead of the handle is parallel to the baffles; the baffle is provided with a hole; according to the utility model, the volume cylinder with the height is divided into a plurality of independent parts from the circumferential direction through the plurality of baffles, so that the materials of the independent parts can be effectively prevented from being dispersed and isolated to the periphery; holes are arranged on the baffle plate, so that the amplitude of vertical segregation of materials can be reduced. The evenly stirred mixture is divided into a plurality of parts and is respectively filled into a plurality of spaces separated by a plurality of baffles, and the accumulation cone-shaped sliding surface of the particles is reduced by blocking of the baffles; when the handle tailgate and the intermediate opening are lifted vertically, a shearing and mixing action is performed on the material, while the pellets are rearranged by their own weight on a relatively vertical surface.
Description
Technical Field
The utility model relates to the technical field of concrete segregation prevention, in particular to a segregation prevention device.
Background
In SCGF51-2010 of the technical guidelines for preparing and applying high-performance concrete for bridges, the concrete mixing proportion design adopts a dense skeleton stacking method and adopts a dense proportioning technology, so that the stacking density of coarse and fine aggregates is maximized, the structure of cement concrete is enabled to reach the highest compactness degree, and the consumption of cement is reduced to the greatest extent while the strength of the concrete is ensured. In practical application, the method for determining the maximum bulk density is improved and refined, and an anti-segregation device is required to be added.
1. The improvement is based on:
1. A1L volume cylinder was used for the bulk density of fine aggregate in construction sand GB/T14684-2022.
2. The specification of the volume cylinder used in construction pebbles and gravels GB/T14685-2022 about the bulk density of coarse aggregates is selected according to the maximum particle size.
3. The method for determining the maximum bulk density in SCGF51-2010 of the technical guidelines for preparation and application of high-performance concrete for bridges adopts a 3l volumetric cylinder. The specifications of the volume cylinder are larger when the maximum unit weight of the fly ash and the sand is made in the specifications 1 and 2; the specification of the volume cylinder is smaller when the unit weight of the fly ash, the sand and the stone is the largest. And in the practical application process, the relevance of the test result is low due to the use of the device and the method. The correlation coefficient of the test results can be improved by unifying the test methods and using the segregation preventing device. Conventional anti-segregation devices are not adapted to work within the containment drum and are not adapted to anti-segregation of the concrete material within the containment drum.
Therefore, it is necessary to develop an anti-segregation device to solve the above-mentioned problems.
Disclosure of Invention
The utility model aims to solve the problems and designs an anti-segregation device.
The utility model realizes the above purpose through the following technical scheme:
an anti-segregation device for an anti-segregation of a volumetric cartridge that determines a maximum bulk density, the anti-segregation device comprising:
At least two baffles; at least two baffles divide the volume cylinder at the height from the circumference into at least two independent parts;
a handle; at least two baffles are uniformly arranged on the side wall of the first end of the handle, and the axial lead of the handle is parallel to the baffles.
Further, the baffle is provided with holes.
Still further, the aperture is provided in the middle of the baffle.
Preferably, the number of baffles is four.
Preferably, the height of the baffle is 1/3 of the depth of the interior of the containment drum.
Preferably, the height of the handle is equal to the depth of the interior of the volume.
The utility model has the beneficial effects that:
According to the application, the volume cylinder with the height is divided into a plurality of independent parts from the circumferential direction through the plurality of baffles, so that the materials of the independent parts can be effectively prevented from being dispersed and isolated to the periphery; holes are arranged on the baffle plate, so that the amplitude of vertical segregation of materials can be reduced. The evenly stirred mixture is divided into a plurality of parts and is respectively filled into a plurality of spaces separated by a plurality of baffles, and the accumulation cone-shaped sliding surface of the particles is reduced by blocking of the baffles; when the handle back baffle and the middle hole are vertically lifted, the material is sheared and mixed, and meanwhile, the granules are rearranged on a relatively vertical surface through dead weight;
The height of the handle is as high as that of the volume cylinder, so that the device is convenient to use and is stored in the volume cylinder without influencing the placement of the volume cylinder;
The height and width of the baffle determine the volume of the volume cylinder at which the baffle will be located, and therefore the application also plays a role in volume quantification.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a graph of the dense packing factor α after modification of the process using an anti-segregation device, wherein α Machine-made sand ＝13％,Uw Machine-made sand ＝1923kg/m3; curve correlation coefficient R 2 = 0.9409;
Fig. 3 is a diagram of the dense packing factor β after modification of the process using an anti-segregation device, where β=41%, U w＝2028kg/m3; curve correlation coefficient R 2 = 0.9109;
FIG. 4 is a graph of the dense packing factor α, α Machine-made sand ＝12％,Uw Machine-made sand ＝1964kg/m3, before the process is modified; curve correlation coefficient R 2 = 0.8914;
Fig. 5 is a diagram of the dense packing factor β, where β=43%, U w＝2023kg/m3, before the process is not improved; curve correlation coefficient R 2 = 0.8794;
In the figure: 1. a handle; 2. a baffle; 3. and (3) a hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The following describes specific embodiments of the present utility model in detail with reference to the drawings.
As shown in fig. 1, an anti-segregation device for determining anti-segregation of a volume cylinder of maximum bulk density, the anti-segregation device comprising:
Four baffles 2; the four baffles 2 form a cross structure, and the four baffles 2 divide the volume cylinder at the height into four independent parts from the circumferential direction; an elliptical hole 3 is formed in the middle of the baffle plate 2;
A handle 1; four baffles 2 are evenly arranged on the side wall of the first end of the handle 1, and the axial lead of the handle 1 is parallel to the baffles 2.
In some embodiments, the height of the baffle 2 is 1/3 of the depth of the interior of the volumetric cylinder, 50mm; the diameter of the cross-shaped structure is 150mm, and the thickness of the baffle plate 2 is 1.5mm; the major axis of the oval hole 3 is 20mm, and the minor axis is 15mm; the height of the handle 1 is equal to the depth of the inner part of the volume cylinder and is 160mm, and the diameter of the handle 1 is 10mm.
The optimization test method comprises the following steps: because the adopted dry sand grains and powder materials are tested, a 3L volume cylinder is used in the test process, aggregate is easy to separate, the process of blending fly ash for testing is easier to separate the materials and the materials are separated, and the specific loading steps are not explicitly described in the SCGF51-2010 maximum density test method of the technical guidelines for preparing and applying bridge high-performance concrete, so that the operation of each test is difficult to be unified, and the curve correlation coefficient after the test is small and the representativeness is not ideal. The test method is described in detail below.
1. Weighing a certain amount of dry sand (enough to fill a 3L volume cylinder), adding fly ash into the sand from 5% blending amount according to the proportion of increasing 2% each time, and preparing a mixture of the fly ash and the sand. To the point where the first drop in the test density value occurs, the ratio test is increased by three more points.
2. The fly ash and the sand are uniformly mixed and divided into three parts which are approximately equal, the anti-segregation device is placed into a volume cylinder, one part of mixture is filled in, the surface is flattened, the anti-segregation device is taken out, and the anti-segregation device is uniformly tamped for 25 times from side to side by using a tamping rod. Putting an anti-segregation device, putting a 1/3 height sample into a container, taking out the anti-segregation device, uniformly tamping the sample with a tamping rod for 25 times, wherein the tamping depth reaches the surface of the lower layer, repeating the steps, adding the last layer, tamping for 25 times, putting the tamping rod in the middle of a cylinder opening, and scraping the redundant mixture from the middle to two sides by using the tamping rod to enable the mixture to be flush with the container opening. The cartridge and the sample were weighed.
3. And performing curve fitting on the measured data to obtain a quadratic curve equation and a curve correlation coefficient, when the correlation coefficient is greater than 0.9, obtaining a first derivative of the equation, making the first derivative be 0, replacing the obtained alpha value with the equation, and obtaining the maximum packing density U w Fly ash of the fly ash and the sand.
4. And (3) testing the maximum unit weight U w of the fly ash, the sand and the stone by using the obtained mixture of alpha (the proportion of the fly ash) and the sand, wherein the mixture of the fly ash and the sand is added into the stone according to the proportion of 5 percent of each time from 20 percent of the mixing amount.
The achievement application conditions are as follows:
As shown in fig. 2 to 5, the correlation coefficient of the test result after using the segregation preventing device is greater than 0.9, and the correlation coefficient of the curve without the unified standard method is difficult to ensure that the data is greater than 0.9, and the following table is the comparison of the data after improvement and before improvement.
Data comparison chart before and after improvement
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (6)
1. An anti-segregation device for an anti-segregation of a containment drum defining a maximum bulk density, the anti-segregation device comprising:
At least two baffles; at least two baffles divide the volume cylinder at the height from the circumference into at least two independent parts;
a handle; at least two baffles are uniformly arranged on the side wall of the first end of the handle, and the axial lead of the handle is parallel to the baffles.
2. An anti-segregation device according to claim 1, wherein the baffle is provided with holes.
3. An anti-segregation device according to claim 2, wherein the aperture is provided in the middle of the baffle.
4. An anti-segregation device according to claim 1, wherein the number of baffles is four.
5. An anti-segregation device according to claim 1, wherein the height of the baffle is 1/3 of the depth of the interior of the containment vessel.
6. An anti-segregation device according to claim 1, wherein the height of the handle is equal to the depth of the interior of the containment drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322872564.1U CN221038567U (en) | 2023-10-25 | 2023-10-25 | Anti-segregation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322872564.1U CN221038567U (en) | 2023-10-25 | 2023-10-25 | Anti-segregation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221038567U true CN221038567U (en) | 2024-05-28 |
Family
ID=91132211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322872564.1U Active CN221038567U (en) | 2023-10-25 | 2023-10-25 | Anti-segregation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221038567U (en) |
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2023
- 2023-10-25 CN CN202322872564.1U patent/CN221038567U/en active Active
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