Early cracking test device for concrete

Abstract

The utility model discloses a concrete early cracking test device which is cylindrical and comprises a base, a stand column vertically arranged on the base and a fixed wall vertically arranged on the edge of the top of the base, the fixed wall is in an arc shape, and a sliding door for sealing a notch of the fixed wall is horizontally arranged on the base in a sliding mode. Supporting plates for separating the internal space of the fixed wall are arranged on the inner side of the fixed wall in the axial direction, each space in the fixed wall is provided with an exhaust ring, the exhaust rings are connected with a temperature and humidity control box through stand columns, and the tops of the stand columns are connected with a fan. The effects of reducing the manufacturing cost of the test device and improving the accuracy of the early cracking test of the concrete sample are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete cracking test devices, in particular to a concrete early cracking test device. Background Art

[0002] In China, the flat plate method is mainly used for early cracking tests of concrete. This method requires that the specimen be placed in a constant temperature and humidity chamber with an ambient temperature of (20±2)℃ and a relative humidity of (60±5)%, and the wind speed at 100mm above the center of each specimen surface should be (5±0.5)m / s. In the actual test process, it takes a lot of money to build a laboratory that meets these three constraints, and poor airtightness will also have a great impact on the test results. Summary of the invention

[0003] The technical problem to be solved by the utility model is that the cost of building a concrete early cracking test room is high and the sealing performance is poor.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a concrete early cracking test device, the device is cylindrical, including a base, a column vertically arranged on the base and a fixed wall vertically arranged on the top edge of the base, the fixed wall is arc-shaped, a sliding door for closing the gap in the fixed wall is horizontally slidably arranged on the base, a support plate for separating the internal space of the fixed wall is axially arranged on the inner side of the fixed wall, each space in the fixed wall is provided with an exhaust ring, the exhaust ring is connected to the temperature and humidity control box through the column, and the top of the column is connected to the fan.

[0005] Preferably, an arc-shaped support bar is fixedly connected to the inner side of the fixed wall, and the top of the support bar contacts the bottom surface of the support plate.

[0006] Preferably, the support plate is coaxially rotatably connected to the column.

[0007] Preferably, the exhaust ring is coaxially fixedly connected to the column, and the exhaust ring is in contact with the bottom surface of the support plate.

[0008] Preferably, an arc-shaped channel is opened on the inner side of the fixed wall, the sliding door is arc-shaped, and the sliding door is rotatably arranged in the arc-shaped channel.

[0009] Preferably, a locking plate is provided between one end of the sliding door and the fixed wall.

[0010] Preferably, a gap is provided between the lock plate and the sliding door.

[0011] 1. The utility model provides a concrete early cracking test device. By arranging a cylindrical test device, the overall footprint of the device is small. A sealed cavity structure is formed by a fixed wall and a sliding door to form a sealed concrete test block test device. The temperature and humidity of each space in the fixed wall are controlled by a temperature and humidity control box, a column and an exhaust ring to realize the test of a concrete sample placed on a support plate.

[0012] 2. The overall structure of the test device is simple and is constructed by panels, which can meet the early cracking test requirements of concrete specimens, and the construction cost of the test device is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0015] Figure 2 It is a top view of an embodiment of the utility model.

[0016] Figure 3 for Figure 2 Section view of the AA plane.

[0017] In the figure: 1. base; 2. column; 3. temperature and humidity control box; 4. support plate; 5. fixed wall; 6. sliding door; 7. exhaust ring; 8. fan; 9. support bar; 10. lock plate. DETAILED DESCRIPTION

[0018] like Figure 1-3 The utility model provides a concrete early cracking test device, which is cylindrical and comprises a base 1, a column 2 vertically arranged on the base 1 and a fixed wall 5 vertically arranged on the top edge of the base 1, the fixed wall 5 is arc-shaped, a sliding door 6 for closing the gap of the fixed wall 5 is horizontally slidably arranged on the base 1, a support plate 4 for dividing the internal space of the fixed wall 5 is axially arranged on the inner side of the fixed wall 5, each space in the fixed wall 5 is provided with an exhaust ring 7, the exhaust ring 7 is connected to the temperature and humidity control box 3 through the column 2, and the top of the column 2 is connected to a fan 8.

[0019] The base 1 is disc-shaped, and the columns 2 are arranged vertically and coaxially fixed on the top of the base 1. Then, a fixed wall 5 is fixedly installed on the top edge of the base 1. The fixed wall 5 is coaxially matched with the columns 2. Then, the sliding door 6 is installed on the base 1 to realize the mobile installation of the sliding door 6. Then, the support plates 4 are fixedly installed. The support plates 4 are arranged equidistantly and are used to place concrete samples. Finally, the cover plate is fixedly installed on the fixed wall 5.

[0020] The support plate 4 divides the fixed wall 5 into multiple independent spaces to form a test cavity. Each test cavity is arranged with a temperature sensor and a humidity sensor. The column 2 is hollow inside. The temperature and humidity control box 3 transports gas to the test cavity through the column 2 and the exhaust ring 7 to control the temperature and humidity in the test cavity. At the same time, the fan 8 on the top supplies air to the test cavity through the column 2 and the exhaust ring 7 to meet the conditions of the early cracking test of the concrete specimen.

[0021] like Figure 1 and Figure 3 As shown, in order to improve the stability of the support plate 4, an arc-shaped support bar 9 is fixedly connected to the inner side of the fixed wall 5, and the top of the support bar 9 contacts the bottom surface of the support plate 4. By fixing the support bar 9 on the fixed wall 5, the edge of the support plate 4 is supported by the support bar 9, and the concrete sample is placed on the support plate 4 More stable.

[0022] As a preferred embodiment of the utility model, in order to facilitate the workers to place the concrete sample on the support plate 4. The support plate 4 is coaxially rotatably connected to the column 2.

[0023] By rotating and installing the support plate 4 and providing edge and inner support for the support plate 4, and because the support bar 9 is arc-shaped, the staff can rotate the support plate 4 after placing the concrete sample on one side of the support plate 4, and then place the remaining concrete sample on the other side of the support plate 4.

[0024] like Figure 3 As shown. The exhaust ring 7 is coaxially fixedly connected to the column 2, and the exhaust ring 7 contacts the bottom surface of the support plate 4. The exhaust ring 7 located in the next test cavity supports the middle part of the support plate 4 of the previous test cavity, ensuring that the support plate 4 can rotate while having sufficient stability.

[0025] like Figure 1 and Figure 3 As shown. An arc-shaped channel is provided inside the fixed wall 5, and the sliding door 6 is arc-shaped, and the sliding door 6 is rotatably arranged in the arc-shaped channel. In order to ensure the stability and sealing of the sliding door 6 and facilitate the staff to move the sliding door 6, an arc-shaped channel is provided in the fixed wall 5 as a moving channel for the sliding door 6; the sliding door 6 is moved into the arc-shaped channel during loading and unloading, and the sliding door 6 is moved out of the arc-shaped channel during testing to close the test device.

[0026] like Figure 1 As shown. A locking plate 10 is provided between one end of the sliding door 6 and the fixed wall 5. The sliding door 6 and the fixed wall 5 are both provided with locking plates 10, and the two locking plates 10 are arranged correspondingly. When the sliding door 6 is moved to close the fixed wall 5, the corresponding threaded holes between the two locking plates 10 are connected by a pin bolt to achieve locking of the sliding door 6.

[0027] like Figure 1 A gap is provided between the locking plate 10 and the sliding door 6. One end of the sliding door 6 with the locking plate 10 can be inserted into the arc-shaped channel of the fixed wall 5 to ensure the stability and sealing of the sliding door 6 after being fixed.

Claims

1. A concrete early cracking test device, characterized in that: The device is cylindrical and comprises a base (1), a column (2) vertically arranged on the base (1), and a fixed wall (5) vertically arranged on the top edge of the base (1); the fixed wall (5) is arc-shaped; a sliding door (6) is horizontally slidably arranged on the base (1) to close a gap in the fixed wall (5); a support plate (4) is axially arranged on the inner side of the fixed wall (5) to separate the internal space of the fixed wall (5); an exhaust ring (7) is arranged in each space in the fixed wall (5); the exhaust ring (7) is connected to a temperature and humidity control box (3) through the column (2); and a fan (8) is connected to the top of the column (2).

2. A concrete early cracking test device as claimed in claim 1, characterized in that: An arc-shaped support bar (9) is fixedly connected to the inner side of the fixed wall (5), and the top of the support bar (9) is in contact with the bottom surface of the support plate (4).

3. A concrete early cracking test device as claimed in claim 2, characterized in that: The support plate (4) is coaxially rotatably connected to the column (2).

4. A concrete early cracking test device as claimed in claim 3, characterized in that: The exhaust ring (7) is coaxially fixedly connected to the column (2), and the exhaust ring (7) is in contact with the bottom surface of the support plate (4).

5. A concrete early cracking test device as claimed in claim 1, characterized in that: An arc-shaped channel is provided on the inner side of the fixed wall (5); the sliding door (6) is arc-shaped, and the sliding door (6) is rotatably arranged in the arc-shaped channel.

6. A concrete early cracking test device as claimed in claim 1 or 5, characterized in that: A locking plate (10) is provided between one end of the sliding door (6) and the fixed wall (5).

7. A concrete early cracking test device as claimed in claim 6, characterized in that: A gap is provided between the lock plate (10) and the sliding door (6).

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