Concrete slump detection device

Abstract

The utility model discloses a concrete slump detection device and belongs to the field of concrete detection. Comprising an iron alloy bottom plate and a slump cone, the slump cone is arranged on the upper end surface of the bottom plate through a pressure device; the pressure device comprises aluminum alloy mounting plates arranged on the two sides of the slump cone, the mounting plates are welded to the slump cone, and electromagnets are arranged on the upper end faces of the mounting plates. The device has the beneficial effects that in a preparation stage, firstly, the slump cone needs to be fixed on the upper end face of the bottom plate in a specific fixing manner that the mounting plate is attached to the upper end face of the bottom plate, then current is introduced into the electromagnet, and the electromagnet generates strong magnetic force to attract the iron alloy bottom plate, so that the slump cone can be fixed on the bottom plate; compared with the prior art, the device is more convenient because manual operation is not needed. And the magnetic force of the electromagnet is adjustable, the magnetism can be adjusted according to needs, and compared with the prior art, the fixing mode of the electromagnet is more stable.

Description

Technical Field

[0001] The utility model relates to a device for detecting the slump of concrete, belonging to the field of concrete detection. Background Art

[0002] The slump of concrete mainly refers to the plasticizing performance and pumpability of concrete. The main factors affecting the slump of concrete include gradation change, water content, weighing deviation of weighing equipment, and the dosage of admixtures. Additionally, the temperature of cement is also an easily overlooked factor. The slump refers to the workability of concrete. Specifically, it ensures the normal progress of construction, including the water retention, fluidity, and cohesion of concrete. The test method for slump: Use a slump cone with a 100mm upper opening, 200mm lower opening, and 300mm height. Pour the concrete in three layers, and after each layer is filled, use a tamping rod to strike evenly from the outside to the inside along the wall of the cone. After tamping, level it. Then pull out the slump cone, and due to its own weight, the concrete will slump. Subtract the height of the highest point of the slumped concrete from the height of the slump cone (300mm), which is called the slump.

[0003] Such equipment has some disadvantages, mainly including: The detection requires a smooth and flat rigid plate. Currently, it is difficult to find a rigid metal plate for concrete detection during on-site pouring. Usually, the slump cone is placed on a flat cement road surface for detection, resulting in inaccurate detection results. On the other hand, during the detection process, the tester needs to fix the slump cone with feet to prevent the slump cone from shifting during loading, which requires an additional test personnel for auxiliary detection, increasing labor costs and being relatively complex to operate, affecting the progress of on-site pouring construction.

[0004] The Chinese utility model patent with the application number CN201921771861.4 provides a portable concrete slump tester, which can solve the above problems. However, when the actual concrete slump cone is fixed on the base by the slump cone fixing clamp plate and the movable pressing plate, since the impact force of the concrete will be applied to all directions of the slump cone during concrete loading, and when tamping the concrete inside the slump cone, it will also cause impact on the inside of the slump cone. Only using the pressing plate will cause the slump cone to slide on the base.

[0005] Moreover, in order to set the pressing plate, a rotating shaft needs to be set on the base. When the concrete slumps on the bottom plate, this rotating shaft will contact the concrete, affecting the slump of the concrete. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a device for detecting the slump of concrete, which can effectively solve the above problems.

[0007] In order to solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] It includes a ferroalloy bottom plate and a slump cone; the slump cone is arranged on the upper end surface of the bottom plate through a pressure device; the pressure device includes aluminum alloy mounting plates arranged on both sides of the slump cone, the mounting plates are welded to the slump cone, and electromagnets are arranged on the upper end surfaces of the mounting plates.

[0009] Furthermore: a vertical plate is arranged on one side of the mounting plate, a limiting plate is integrally formed on the upper end surface of the vertical plate, a limiting hole is arranged in the limiting plate, and a vertical rod is arranged in the limiting hole. The vertical rod is installed on the side surface of the bottom plate through a mounting member.

[0010] Furthermore: the mounting member includes a mounting table arranged on the side surface of the bottom plate, a right-angle rod is arranged on the mounting table, and the right-angle rod is welded to the vertical rod.

[0011] Furthermore: inclined reinforcing ribs are arranged on the right-angle rod.

[0012] Furthermore: the mounting plate is fixedly connected to the slump cone through an inclined plate, and the mounting plate and the inclined plate are integrally formed.

[0013] Furthermore: a handrail is also arranged on the outer surface of the slump cone.

[0014] Furthermore: handles are rotatably arranged on the front and rear end surfaces of the bottom plate.

[0015] The beneficial effects are as follows:

[0016] The fixing method is more stable: This device uses the magnetic force of an electromagnet to fix the slump cone, which is more convenient and does not require manual operation compared to traditional methods. Moreover, the magnetic force of the electromagnet is adjustable and can be adjusted according to needs to ensure the stable fixation of the slump cone.

[0017] Improve the detection accuracy: Through the setting of the limiting plate and the vertical rod, this device ensures that the slump cone can rise vertically during the detection process, thereby improving the detection accuracy; at the same time, it ensures the flatness of the upper end surface of the bottom plate, and there are no other components and structures affecting the slump of the concrete.

[0018] Easy to operate: This device is designed with a handrail and handles, which are convenient for operation and measurement, reduce manual operation, and improve work efficiency.

[0019] Strong adjustability: The pressure device of this device includes aluminum alloy mounting plates, these mounting plates are welded to the slump cone, and electromagnets are arranged, and this structure enables the device to be adjusted and modified according to needs. Description of the Drawings

[0020] For ease of explanation, the present utility model is described in detail by the following specific embodiments and accompanying drawings.

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is Figure 1 a partially enlarged view in

[0023] Description of the reference numerals:

[0024] 1, bottom plate; 2, slump cone; 3, mounting plate; 4, electromagnet; 5, vertical plate; 6, limiting plate; 7, vertical rod; 8, mounting member; 9, mounting table; 10, right-angled rod; 11, reinforcing rib; 12, inclined plate; 13, handrail; 14, handle. Specific embodiments

[0025] The following details the embodiments of the present utility model, and the examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0026] It should be noted that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0027] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0028] At the same time, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Refer to Figure 1 an embodiment of a concrete slump detection device of the present utility model,

[0030] It includes a ferroalloy bottom plate 1 and a slump cone 2; the slump cone 2 is arranged on the upper end surface of the bottom plate 1 through a pressure device; the pressure device includes aluminum alloy mounting plates 3 arranged on both sides of the slump cone 2, the mounting plates 3 are welded to the slump cone 2, and an electromagnet 4 is arranged on the upper end surface of the mounting plates 3.

[0031] When conducting the concrete slump test, first carry out the preparatory work:

[0032] 1. Prepare an octagonal ferroalloy bottom plate 1 with a length and width not less than 500 mm;

[0033] 2. Prepare a slump cone, which is a slump cone 2 with a bottom diameter of 200 mm and a top diameter of 100 mm and a height of 300 mm;

[0034] 3. Prepare a sufficient amount of concrete samples to ensure that the slump cone 2 can be filled;

[0035] 4. Prepare a tamping rod for tamping the concrete in the slump cone 2;

[0036] 5. Prepare a ruler or measuring tape for measuring the slump.

[0037] When implementing, proceed as follows:

[0038] Sampling: Take a representative concrete sample from the mixer truck.

[0039] Loading the cylinder: Stand the slump cone 2 upright on a hard and flat ground; load the concrete in three layers, with each layer height approximately 1 / 3 of the slump cone height; for each layer loaded, tamp evenly 25 times with the tamping rod to ensure the concrete is dense.

[0040] Levelling: After filling the three layers, use a scraper to level the concrete on the top of the cylinder so that it is flush with the top of the cylinder.

[0041] Demoulding: Slowly lift the slump cone vertically to let the concrete slump freely.

[0042] Measurement: Measure the vertical distance between the center point of the top of the cylinder and the highest point of the concrete after the concrete has slumped, and this distance is the slump.

[0043] Recording: Record the slump value and observe the slump form of the concrete, such as whether there are cracks, segregation and other phenomena.

[0044] Evaluation: Evaluate whether the workability of the concrete meets the construction requirements based on the slump value and the observed concrete state; the slump test is simple and easy to perform, but it should be noted that during the test process, the operating procedures must be strictly followed to ensure the accuracy and repeatability of the results. The slump value is usually used to measure the fluidity of the concrete, and the larger the value, the better the fluidity. However, too high a slump may cause the concrete to be prone to segregation and bleeding, affecting the quality of the concrete.

[0045] In the preparation stage of the device, first, the slump cone 2 needs to be fixed on the upper end surface of the bottom plate 1. The specific fixing method is to attach the mounting plate 3 to the upper end surface of the bottom plate 1, and then pass an electric current through the electromagnet 4. The electromagnet 4 generates a strong magnetic force to attract the ferroalloy bottom plate 1, so that the slump cone 2 can be fixed on the bottom plate 1; this is more convenient compared with the prior art because it does not require manual operation. And the magnetic force of the electromagnet 4 is adjustable, and the magnetic property can be adjusted according to needs. Compared with the prior art, the fixing method of the electromagnet 4 is more stable.

[0046] A vertical plate 5 is arranged on one side of the mounting plate 3. A limiting plate 6 is integrally formed on the upper end surface of the vertical plate 5. A limiting hole is arranged in the limiting plate 6, and a vertical rod 7 is arranged in the limiting hole. The vertical rod 7 is installed on the side surface of the bottom plate 1 through a mounting member 8.

[0047] During the whole detection process, in order to ensure the detection accuracy, it is necessary to ensure that the slump cone 2 rises vertically; in the prior art, only the slump cone 2 is manually lifted; if the hand shakes when lifting, it will affect the overall shape of the concrete in the slump cone 2, thus affecting the subsequent natural slump of the concrete; so this device is provided with a limiting plate 6 and a vertical rod 7 to ensure the vertical rise of the slump cone 2.

[0048] At the same time, in this device, the vertical plate 5 is used to raise the horizontal height of the limiting plate 6, and the vertical rod 7 is installed on the side surface of the bottom plate 1 through the mounting member 8. The purpose is to make sure that there are no components on the upper end surface of the bottom plate 1, to ensure the flatness of the upper end surface of the bottom plate 1, and to prevent being affected by other factors when the concrete slumps; such a setting can improve the detection accuracy.

[0049] The specific structure of the mounting member 8 in this device includes a mounting table 9 arranged on the side surface of the bottom plate 1. A right-angle rod 10 is arranged on the mounting table 9, and the right-angle rod 10 is welded to the vertical rod 7.

[0050] With such a setting, through the right-angle rod 10, the vertical rod 7 that is convenient for the vertical lifting and lowering of the slump cone 2 can be arranged bypassing the upper end surface of the bottom plate 1.

[0051] An inclined reinforcing rib 11 is arranged on the right-angle rod 10; the function of the reinforcing rib 11 is to enhance the stability of the right-angle rod 10.

[0052] The mounting plate 3 is fixedly connected to the slump cone 2 through an inclined plate 12, and the mounting plate 3 and the inclined plate 12 are integrally formed. The purpose of setting the inclined plate 12 is to make the slump cone 2 and the mounting plate 3 more stable and firm during the concrete ramming.

[0053] A handrail 13 is also arranged on the outer surface of the slump cone 2. During the demoulding process, the function of the handrail 13 is to facilitate the worker to vertically lift the slump cone 2.

[0054] The front and rear end faces of the bottom plate 1 are rotatably provided with a handle 14. During the measurement process, the slump cone 2 is lifted. After the mixture stops flowing, the handle 14 is turned up, and the slump of the concrete is measured with a steel ruler along the lower bottom surface of the handle 14.

[0055] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A device for detecting the slump of concrete, characterized in that: It includes a ferroalloy bottom plate (1) and a slump cone (2); the slump cone (2) is arranged on the upper end surface of the bottom plate (1) through a pressure device; the pressure device includes aluminum alloy mounting plates (3) arranged on both sides of the slump cone (2), the mounting plates (3) are welded to the slump cone (2), and electromagnets (4) are arranged on the upper end surfaces of the mounting plates (3).

2. The concrete slump detection device according to claim 1, characterized in that: A vertical plate (5) is arranged on one side of the mounting plate (3), a limiting plate (6) is integrally formed on the upper end surface of the vertical plate (5), a limiting hole is arranged in the limiting plate (6), and a vertical rod (7) is arranged in the limiting hole. The vertical rod (7) is installed on the side surface of the bottom plate (1) through a mounting member (8).

3. The concrete slump detection device according to claim 2, characterized in that: The mounting member (8) includes a mounting table (9) arranged on the side surface of the bottom plate (1), a right-angle rod (10) is arranged on the mounting table (9), and the right-angle rod (10) is welded to the vertical rod (7).

4. The concrete slump detection device according to claim 3, wherein: An inclined reinforcing rib (11) is arranged on the right-angle rod (10).

5. The concrete slump detection device according to claim 1, characterized in that: The mounting plate (3) is fixedly connected to the slump cone (2) through an inclined plate (12), and the mounting plate (3) is integrally formed with the inclined plate (12).

6. The concrete slump detection device according to claim 1, wherein: A handrail (13) is further arranged on the outer surface of the slump cone (2).

7. The concrete slump detection device according to claim 1, characterized in that: Carrying handles (14) are rotatably arranged on the front and rear end faces of the bottom plate (1).

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