Concrete slump measuring device

Abstract

The utility model provides a concrete slump measuring device which comprises a base, a charging barrel and a tamping rod, wherein a vertical stand is vertically arranged on the base; the charging barrel is fixed on the base; the tamping rod is connected with the vertical frame through a flexible connecting piece, the tamping rod is provided with scales arranged in the axial direction and a limiting stopper with the position capable of being adjusted in the axial direction, and the size of the limiting stopper in the radial direction of the tamping rod is larger than the caliber of the charging barrel. The slump detection device can ensure that the tamping rod does not go deep into other layers during tamping, so that the most real cohesiveness and compactness of a concrete mixture are ensured, and the slump detection accuracy is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete slump detection, in particular to a concrete slump measuring device. Background Art

[0002] Concrete is artificially mixed stone, hence the name "concrete." It's a general term for engineering composite materials composed of aggregates bonded together by a cementitious material. Concrete generally refers to cement as the binder, sand and stone as aggregates, mixed with water and possibly admixtures and additives in a specific proportion, and then mixed. Cement concrete, also known as ordinary concrete, is widely used in civil engineering.

[0003] Concrete slump is a key indicator of concrete's performance and a key parameter for its flowability. It's often used to measure concrete's suitability and quality. Concrete with a high slump is highly fluid and easy to fill into formwork, making it easier to construct. Concrete with a low slump, on the other hand, has difficulty flowing.

[0004] The slump of concrete is, to a certain extent, related to its strength, durability, and other properties. Excessive slump can reduce its strength and durability, potentially leading to shrinkage and cracking, and potentially causing quality issues. Large-scale construction projects often require that the slump of concrete fall within a specified range to ensure quality and performance.

[0005] During the testing process, the concrete samples obtained as required are evenly loaded into the barrel in three layers using a small shovel, so that the height of each layer after compaction is about 1 / 3 of the barrel height. Each layer is tamped 25 times with a tamping rod, and the tamping should be carried out from the outside to the center in a spiral direction, and each insertion should be evenly distributed on the cross section. When tamping the bottom layer, the tamping rod should penetrate to a certain depth; when tamping the second or top layer, the tamping rod should penetrate the current layer to the surface of the next layer. The current concrete slump detection device is relatively simple, and it is difficult to ensure that the tamping rod only touches the surface of the next layer when tamping the current layer. If it cannot be ensured that the tamping rod only touches the surface of the next layer, once the tamping rod penetrates into the interior of the next layer, false water seepage will appear at the bottom, and the barrel is prone to displacement during the compaction process. The existence of these problems will affect the accuracy of the slump test, and then affect the quality of the concrete. Utility Model Content

[0006] In order to solve the technical problems existing in the background technology, the utility model proposes a concrete slump measuring device.

[0007] The utility model provides a concrete slump measuring device, comprising: a base, a barrel, and a tamping rod, wherein:

[0008] A vertical stand is provided on the base;

[0009] The barrel is a conical barrel that runs through from top to bottom and is fixed on the base.

[0010] The rammer is connected to the vertical frame through a flexible connector. The rammer is provided with scales arranged axially and a position limiter whose position can be adjusted axially, and the size of the position limiter in the radial direction of the rammer is larger than the diameter of the barrel.

[0011] Preferably, a number of connecting ears are provided on the barrel, which are evenly distributed circumferentially along the outer wall of the barrel. The connecting ears are in contact with the base and are connected to the base through threaded fasteners.

[0012] Preferably, a gasket is provided at the contact surface between the barrel and the base.

[0013] Preferably, the position limiter includes a hoop sleeved on the rammer, a limiting rod radially fixed on the hoop, and a fastening bolt for fastening the hoop on the rammer, and the length of the limiting rod is greater than the diameter of the barrel.

[0014] Preferably, a leveling instrument is provided on the base.

[0015] Preferably, at least three uniformly distributed legs are provided at the bottom of the base. The legs include threaded barrels vertically fixed at the bottom of the base and threaded posts threadedly assembled with the threaded barrels.

[0016] Preferably, rollers are provided at the bottoms of the threaded posts.

[0017] Preferably, a sealing ring arranged circumferentially along the barrel is further provided at the position of the base outside the barrel.

[0018] Preferably, a positioning groove is provided on the base. The positioning groove is an annular groove. The sealing ring includes an assembly part located in the positioning groove and a protruding part protruding above the upper surface of the base.

[0019] In the present utility model, a vertical frame is provided on the base to fix the barrel on the base, connect the rammer to the vertical frame, and scales and a position limiter are provided on the rammer. The position of the position limiter on the rammer can be adjusted, and the size of the position limiter in the radial direction of the rammer is larger than the diameter of the barrel, so that the position limiter cannot pass through the diameter of the barrel. Then, when using the rammer to compact the concrete in the barrel, by adjusting the position of the position limiter on the rammer, it can be ensured that the rammer will not penetrate into other layers during compaction, so as to ensure the most authentic cohesiveness and density of the concrete mixture, and then ensure the accuracy of the slump test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a concrete slump measuring device proposed by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Refer to Figure 1, a concrete slump measuring device proposed by the utility model includes: a base 1, a hopper 2, and a tamper 3, where:

[0022] A vertical support 4 is provided on the base 1. The hopper 2 is a conical cylinder that is vertically through, and the hopper 2 is fixed on the base 1. The tamper 3 is connected to the support 4 through a flexible connector 5, which can ensure the free movement of the tamper 3 and avoid the loss of the tamper 3. The tamper 3 is provided with an axially arranged scale and a position limiter 6 that can be axially adjusted. Moreover, the size of the position limiter 6 in the upward direction of the tamper 3 is larger than the diameter of the hopper 2, so that the position limiter 6 cannot enter the hopper 2, thereby restricting the insertion depth of the tamper 3 during the guiding process.

[0023] When concrete slump detection is required, the obtained concrete samples are taken as required and poured into the hopper 2 in three portions in sequence. During the pouring into the hopper 2, each time a portion of the sample is poured, the concrete poured into the hopper 2 is tamped with the tamper 3 to form a layer. When tamping, according to the layer thickness of each layer of concrete in the hopper 2, referring to the scale on the tamper 3, the position of the position limiter 6 on the tamper 3 is adjusted to ensure that the tamper 3 does not penetrate into other layers during tamping, so as to ensure the most authentic cohesiveness and density of the concrete mixture, and then ensure the accuracy of the slump detection. And the base 1 can ensure the flatness of the bottom of the hopper 2.

[0024] In this embodiment, a plurality of connecting ears 7 are provided on the hopper 2 and are evenly distributed circumferentially along its outer wall. The connecting ears 7 are in contact with the base 1 and are connected to the base 1 through threaded fasteners. When the tamping is completed, the threaded fasteners are unscrewed to remove the hopper 2, and during tamping, the hopper 2 is fixed on the base 1 by using the threaded fasteners to prevent the hopper 2 from moving during the tamping process.

[0025] Furthermore, a sealing gasket is provided at the contact surface between the hopper 2 and the base 1 to ensure the sealing effect of the contact surface and prevent the concrete in the cylinder from overflowing.

[0026] The position limiter 6 in this embodiment includes a hoop sleeved on the tamper 3, a fastening bolt for fastening the hoop on the tamper 3, and a limiting rod with one end fixed on the hoop. Moreover, the length of the limiting rod is greater than the diameter of the hopper 2. When the position of the position limiter 6 needs to be adjusted, the fastening bolt is loosened, and according to the scale of the tamper 3, the position of the hoop on the tamper 3 is adjusted, and finally the fastening bolt is tightened again.

[0027] In addition, a level is also provided on the base 1 in this embodiment to ensure the levelness of the base 1 and prevent it from tilting.

[0028] Furthermore, at least three uniformly distributed legs 8 are provided at the bottom of the base 1. The leg 8 includes a threaded cylinder vertically fixed to the bottom of the base 1 and a threaded column threadedly assembled with the threaded cylinder. When the base 1 is inclined, the height of the corresponding leg 8 can be adjusted by rotating the threaded column at the corresponding position to ensure the levelness of the base 1.

[0029] Furthermore, a roller 9 is provided at the bottom of the threaded column to facilitate the movement of the base 1.

[0030] Specifically, the roller 9 is a self-locking roller 9. When it is not necessary to move the base 1, the roller 9 can be locked to prevent the base 1 from moving.

[0031] In addition, in this embodiment, a sealing ring 10 arranged along the circumferential direction of the barrel 2 is further provided at the position of the base 1 on the outer periphery of the barrel 2. After the barrel 2 is removed, the sealing ring 10 can prevent the concrete from overflowing in its inner area, which is convenient for cleaning hygiene, protects the environment and saves water.

[0032] Furthermore, a positioning groove is provided on the base 1. The positioning groove is an annular groove. The sealing ring 10 includes an assembly part located in the positioning groove and a convex part protruding above the upper surface of the base 1. When the sealing ring 10 ages or is damaged and needs to be replaced, only the sealing ring 10 needs to be taken out of the positioning groove and a new one can be replaced, which is extremely convenient.

[0033] The flexible connecting member 5 in this embodiment is a spring rope, a rope, or other connecting lines.

[0034] As can be seen from the above, in the present utility model, the barrel 2 is fixed to the base 1 through the upright frame 4 provided on the base 1, the tamping rod 3 is connected to the upright frame 4, scales and a limiter 6 are provided on the tamping rod 3, and the position of the limiter 6 on the tamping rod 3 can be adjusted. The size of the limiter 6 in the vertical direction of the tamping rod 3 is larger than the diameter of the barrel 2, so that the limiter 6 cannot pass through the diameter of the barrel 2. Then, when using the tamping rod 3 to tamp the concrete in the barrel 2, by adjusting the position of the limiter 6 on the tamping rod 3, it can be ensured that the tamping rod 3 will not penetrate into other layers during tamping, so as to ensure the most real cohesiveness and density of the concrete mixture, and then ensure the accuracy of the slump test.

[0035] The above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A concrete slump measuring device, characterized in that: include: Base (1), barrel (2), and tamper (3), wherein: A vertically arranged stand (4) is provided on the base (1); The barrel (2) is a tapered barrel that penetrates from top to bottom and is fixed on the base (1); The tamping rod (3) is connected to the stand (4) via a flexible connector (5). The tamping rod (3) is provided with an axially arranged scale and an axially adjustable position limiter (6). The size of the limiter (6) in the longitudinal direction of the tamping rod (3) is larger than the diameter of the barrel (2).

2. The concrete slump measuring device according to claim 1, characterized in that: The barrel (2) is provided with a plurality of connecting ears (7) uniformly distributed along the circumference of the outer wall thereof. The connecting ears (7) are in contact with the base (1) and are connected to the base (1) via threaded fasteners.

3. The concrete slump measuring device according to claim 2, characterized in that: A sealing gasket is provided at the contact surface between the barrel (2) and the base (1).

4. The concrete slump measuring device according to claim 1, characterized in that: The limiter (6) comprises a hoop sleeved on the tamping rod (3), a limit rod radially fixed on the hoop, and a fastening bolt for fastening the hoop to the tamping rod (3), and the length of the limit rod is greater than the diameter of the barrel (2).

5. The concrete slump measuring device according to claim 1, characterized in that: A balancer is provided on the base (1).

6. The concrete slump measuring device according to claim 1, characterized in that: At least three evenly distributed supporting legs (8) are provided at the bottom of the base (1), and the supporting legs (8) include a threaded barrel vertically fixed to the bottom of the base (1) and a threaded column threadedly assembled with the threaded barrel.

7. The concrete slump measuring device according to claim 6, characterized in that: The bottom of the threaded column is provided with a roller (9).

8. The concrete slump measuring device according to any one of claims 1 to 7, characterized in that: The base (1) is located at the outer periphery of the barrel (2) and is further provided with a sealing ring (10) arranged along the circumference of the barrel (2).

9. The concrete slump measuring device according to claim 8, characterized in that: A positioning groove is provided on the base (1), which is an annular groove. The sealing ring (10) comprises an assembly portion located in the positioning groove and a raised portion higher than the upper surface of the base (1).

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