Tool for testing rebound rate of sprayed concrete

Abstract

The utility model relates to the technical field of concrete, in particular to a sprayed concrete rebound rate testing tool. Comprising a spraying plate assembly, the spraying plate assembly comprises a spraying bottom plate, the spraying bottom plate is of a plane plate structure, a supporting structure is arranged at the bottom of the spraying bottom plate, the supporting structure comprises spraying plate supporting legs, the number of the spraying plate supporting legs is two, and the two spraying plate supporting legs are symmetrically arranged on the bottom edge of the spraying bottom plate. The device is stable and reliable in structure, convenient and rapid to use and capable of being erected rapidly for testing the concrete rebound rate, and the construction efficiency is remarkably improved. The shotcrete rebound rate testing device is mainly applied to shotcrete rebound rate testing.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, and more specifically to a tool for testing the rebound rate of shotcrete. Background Art

[0002] Since shotcrete adopts the jet forming process, having good sprayability is a necessary condition for obtaining concrete with good spraying quality and is also the basis for high performance of shotcrete. Shotcrete with good sprayability should have a low rebound rate and a certain thickness in one shot. However, different influencing factors have different influences on the rebound rate and thickness of shotcrete. Therefore, it is particularly important to provide a method for controlling the sprayability that satisfies both the rebound rate and the thickness in one shot.

[0003] Sprayability refers to the ability of fresh concrete to reach a certain thickness after being sprayed at high speed onto the sprayed surface with low rebound rate, no slippage, and no shedding. Therefore, a practical on-site tool is needed to test the rebound rate of concrete. Utility Model Content

[0004] In order to overcome the deficiencies in the above-mentioned prior art, the utility model provides a shotcrete rebound rate test tool. The rebound rate test tool has a stable structure, a low failure rate, is suitable for use on concrete construction sites, is easy to operate, and can quickly reflect the rebound rate of concrete.

[0005] In order to solve the above technical problems, the technical problems adopted by the utility model are:

[0006] A shotcrete rebound rate testing tool comprises a shotcrete plate assembly, wherein the shotcrete plate assembly comprises a shotcrete bottom plate, the shotcrete bottom plate adopts a plane plate structure, a support structure is arranged at the bottom of the shotcrete bottom plate, the support structure comprises a shotcrete plate support leg, and the shotcrete plate support leg is arranged in two groups, and the two shotcrete plate support legs are symmetrically arranged on the bottom edge of the shotcrete bottom plate.

[0007] An upper enclosure structure is arranged on the upper side of the spray bottom plate.

[0008] The upper enclosure structure is an upper panel on the injection plate, and the upper panel on the injection plate is arranged to fit the upper edge of the injection bottom plate.

[0009] The side edges of the spray bottom plate are provided with side enclosure structures.

[0010] The measuring enclosure structure is a side panel of the injection plate, and the side panel of the injection plate is arranged on both sides of the injection bottom plate, and the side panel of the injection plate is arranged to fit the side edge of the injection bottom plate.

[0011] Lifting handles are arranged on both sides of the spraying bottom plate.

[0012] The back side of the spray bottom plate is provided with a hook for placing items.

[0013] The spray bottom plate is made of a steel plate with a square plate structure, the thickness of the spray bottom plate is 10 mm, and the side length of the spray bottom plate is 600 mm.

[0014] The length of the upper panel of the injection plate is set to be equal to the upper side of the injection bottom plate, and the height of the upper panel of the injection plate is 5 mm.

[0015] The length of the side panel of the injection plate is set to be equal to the side of the injection bottom plate, and the height of the side panel of the injection plate is 5 mm.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The setting of the spraying bottom plate allows the sprayed concrete to be sprayed directly onto the spraying bottom plate. After the spraying operation is completed, the thickness and mass of the concrete on the spraying bottom plate can be measured to quickly and accurately obtain the rebound rate; the setting of the upper panel and the side panel of the spraying plate prevents the concrete from splashing outside the spraying bottom plate during spraying; the setting of the lifting handle facilitates the operator to erect and remove the device; the setting of the spraying plate support legs can lift the spraying bottom plate to a certain height; the storage hook is used to place the plastic sheet to collect the dropped concrete. The structure of this device is stable and reliable, and it is easy and quick to use. It can be quickly erected to test the rebound rate of concrete, which significantly improves the construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a front view of the utility model;

[0020] Figure 3 It is a side view of the utility model;

[0021] Figure 4 It is a top view of the utility model;

[0022] Figure 5 It is a schematic diagram of the use of the utility model;

[0023] In the figure: 1 is the spray bottom plate, 2 is the spray board side panel, 3 is the spray board upper panel, 4 is the spray board support leg, 5 is the lifting handle, 6 is the storage hook, and 7 is the plastic sheet. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0026] like Figures 1 to 5 As shown, a shotcrete rebound rate test tool includes a shotcrete plate assembly, the shotcrete plate assembly includes a shotcrete bottom plate 1, the shotcrete bottom plate 1 adopts a flat plate structure, a support structure is arranged at the bottom of the shotcrete bottom plate 1, and the support structure includes a shotcrete plate support leg 4, and two groups of shotcrete plate support legs 4 are arranged, and the two shotcrete plate support legs 4 are symmetrically arranged on the bottom edge of the shotcrete bottom plate 1. The shotcrete bottom plate 1 is set almost upright against the wall by the shotcrete plate support legs 4, and a plastic sheet 7 is laid under the shotcrete bottom plate 1 to recover the rebound material. After confirming that the device is stable, a wet spraying machine with automatic metering is used to start spraying concrete to the shotcrete bottom plate 1, and the concrete is continuously sprayed at a certain base point until the concrete falls off under the action of its own weight, and then the spraying is stopped to test its thickness. The rebound rate is calculated by dividing the mass of the concrete bonded to the device by the total mass of the rebound material.

[0027] Preferably, an upper enclosure structure is provided on the upper side of the spray base plate 1 .

[0028] Preferably, the upper enclosure structure is an upper panel 3 on the injection plate, and the upper panel 3 on the injection plate is arranged to fit the upper edge of the injection base plate 1 .

[0029] Preferably, the side edges of the spray base plate 1 are provided with side enclosure structures.

[0030] Preferably, the enclosure structure is an injection plate side panel 2 , and the injection plate side panel 2 is arranged on both side edges of the injection base plate 1 , and the injection plate side panel 2 is arranged to fit the side edge of the injection base plate 1 .

[0031] The spray base plate 1 is surrounded on three sides and is open on the bottom side.

[0032] Preferably, lifting handles 5 are provided on both sides of the spray base plate 1. When the operator uses or puts down the spray base plate 1, the lifting handles 5 can be used to move the device.

[0033] Preferably, a hook 6 is provided on the back of the spray base plate 1. After the plastic sheet 7 is rolled up and stored, it is inserted into the hook 6, so that the plastic sheet 7 can be carried with the device.

[0034] Preferably, the spray bottom plate 1 is made of a steel plate with a square plate structure, the thickness of the spray bottom plate 1 is 10 mm, and the side length of the spray bottom plate 1 is 600 mm.

[0035] Preferably, the length of the upper panel 3 on the injection plate is set to be equal to the upper side of the injection base plate 1, and the height of the upper panel 3 on the injection plate is 5 mm.

[0036] Preferably, the length of the injection plate side panel 2 is set to be equal to the side of the injection base plate 1, and the height of the injection plate side panel 2 is 5 mm.

[0037] The plastic sheet stored on the hook 6 is spread flat on the ground against the wall. The operator holds the lifting handle 5 and stands the spray base plate 1 against the wall. The spray base plate 1 stands against the wall at an angle nearly perpendicular to the ground. The wet spraying machine with automatic metering is used to start spraying concrete to the spray base plate 1. The concrete is continuously sprayed at a certain base point until the concrete falls off under its own weight. The spraying is stopped to test its thickness and the rebound rate is calculated by weighing.

[0038] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.

Claims

1. A shotcrete rebound rate test tool, characterized by: The invention comprises an injection plate assembly, wherein the injection plate assembly comprises an injection base plate (1), wherein the injection base plate (1) adopts a planar plate structure, wherein a support structure is arranged at the bottom of the injection base plate (1), wherein the support structure comprises injection plate support legs (4), wherein two groups of injection plate support legs (4) are arranged, and wherein the two injection plate support legs (4) are symmetrically arranged on the bottom edge of the injection base plate (1).

2. A shotcrete rebound rate testing tool according to claim 1, characterized in that: An upper enclosure structure is provided on the upper side of the spraying bottom plate (1).

3. A shotcrete rebound rate testing tool according to claim 2, characterized in that: The upper enclosure structure is an upper panel (3) on the injection plate, and the upper panel (3) on the injection plate is arranged to fit the upper edge of the injection bottom plate (1).

4. A shotcrete rebound rate testing tool according to claim 1, characterized in that: The side edges of the spray bottom plate (1) are provided with side enclosure structures.

5. A shotcrete rebound rate testing tool according to claim 4, characterized in that: The side enclosure structure is a spray plate side panel (2), and the spray plate side panel (2) is arranged on both side edges of the spray bottom plate (1), and the spray plate side panel (2) is arranged to fit the side edge of the spray bottom plate (1).

6. A shotcrete rebound rate testing tool according to claim 1, characterized in that: Lifting handles (5) are provided on both sides of the spray base plate (1).

7. A shotcrete rebound rate testing tool according to claim 1, characterized in that: The back side of the spray bottom plate (1) is provided with a storage hook (6).

8. A shotcrete rebound rate testing tool according to claim 1, characterized in that: The spray bottom plate (1) is made of a steel plate with a square plate structure; the thickness of the spray bottom plate (1) is 10 mm; and the side length of the spray bottom plate (1) is 600 mm.

9. A shotcrete rebound rate testing tool according to claim 3, characterized in that: The length of the upper panel (3) of the injection plate is set to be equal to the upper side of the injection bottom plate (1), and the height of the upper panel (3) of the injection plate is 5 mm.

10. A shotcrete rebound rate testing tool according to claim 5, characterized in that: The length of the injection plate side panel (2) is set to be equal to the side of the injection bottom plate (1), and the height of the injection plate side panel (2) is 5 mm.

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