Concrete crack resistance testing device

Abstract

The utility model discloses a concrete crack resistance testing device which comprises a testing box, a box opening is formed in one side of the testing box, a box door is hinged to the box opening, a sample frame, a heating device, a pressurizing device, an atomizing device and a cooling device are arranged in the testing box, the sample frame is placed on a bottom plate of the testing box, the heating device is installed on the inner wall of the testing box, and the pressurizing device is installed on the inner wall of the testing box. The pressurizing device comprises a pressing plate and an air cylinder, the pressing plate is arranged in the test box and located above the sample holder, the pressing plate is driven by the air cylinder to move up and down, the atomizing device comprises a plurality of atomizing nozzles installed in the test box, the atomizing nozzles are connected with a water tank through a water pipe, a water pump is installed on the water pipe, and the cooling device comprises an air conditioning system. The air conditioning system controls the temperature in the test box. According to the concrete crack resistance testing device, different environments can be simulated according to requirements, crack resistance testing can be carried out on concrete sample blocks, the testing process is simple and flexible, and the testing requirements of concrete of different specifications are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete performance testing, and in particular relates to a concrete anti-cracking performance testing device. Background Art

[0002] Concrete is generally made by mixing cement as the gel material, sand and gravel as aggregates, and water in a certain proportion. Due to different formulas, the properties of the resulting concrete are also different. The crack resistance of concrete is one of its important performance indicators. The existing early crack resistance test processes are diverse, each simulating a specific usage scenario and testing the crack resistance of the sample blocks. However, the existing concrete crack resistance test equipment either tests the concrete under high temperature and high humidity conditions, or tests the concrete under extreme low temperature conditions. The existing concrete crack resistance test equipment has a single simulation condition and cannot form a flexible and varied crack resistance test for different concrete products. Utility Model Content

[0003] In order to solve the above technical problems, the technical solution adopted by the utility model is: a concrete crack resistance testing device, including a test box, a box opening is provided on one side of the test box, and a box door is hinged at the box opening. The test box is equipped with a sample rack, a heating device, a pressurizing device, an atomizing device, and a cooling device. The sample rack is placed on the bottom plate of the test box, and the heating device is installed on the inner wall of the test box. The pressurizing device includes a pressure plate and a cylinder. The cylinder is installed on the test box. The pressure plate is arranged inside the test box and is located above the sample rack. The pressure plate is driven up and down by the cylinder. The atomizing device includes a number of atomizing nozzles installed in the test box. The atomizing nozzles are connected to the water tank through water pipes. A water pump is installed on the water pipes. The cooling device includes an air-conditioning system. The air-conditioning system controls the temperature inside the test box.

[0004] As a preferred embodiment of the above technical solution, the pressure plate is detachably connected to the output shaft of the cylinder.

[0005] As a preferred embodiment of the above technical solution, the lower end of the test box is fixedly connected to a base, a drawer chamber is provided inside the base, a drawer opening connected to the drawer chamber is provided on one side of the base, a water receiving drawer is provided in the drawer chamber, and a plurality of water permeable holes connected to the drawer chamber are provided on the bottom plate of the test box.

[0006] As a preferred embodiment of the above technical solution, an observation window is provided on the box door, and transparent glass or transparent plastic is installed at the observation window.

[0007] As a preferred embodiment of the above technical solution, one side of the test box is connected to an air pipe, the air pipe is connected to the interior of the test box, and an exhaust fan is installed on the air pipe.

[0008] As a preferred embodiment of the above technical solution, a temperature and humidity sensor for detecting the temperature and humidity inside the test box is installed on the test box.

[0009] The beneficial effects of the utility model are as follows: the concrete crack resistance testing device of the utility model can simulate different environments as needed to test the crack resistance of concrete sample blocks; the testing process is simple and flexible, and meets the testing needs of concrete of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0011] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0012] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0014] like Figure 1As shown, the concrete crack resistance testing device includes a test box 1, a box opening is provided on one side of the test box 1, and a box door 2 is hinged at the box opening. The test box 1 is provided with a sample rack 3, a heating device, a pressurizing device, an atomizing device, and a cooling device. The sample rack 3 is placed on the bottom plate 4 of the test box 1, and the heating device is installed on the inner wall of the test box 1. The pressurizing device includes a pressing plate 5 and a cylinder 6. The cylinder 6 is installed on the test box 1. The pressing plate 5 is arranged inside the test box 1 and is located above the sample rack 3. The pressing plate 5 is driven up and down by the cylinder 6. The atomizing device includes a plurality of atomizing nozzles 7 installed in the test box 1. The atomizing nozzle 7 is connected to the water tank through a water pipe. A water pump is installed on the water pipe. The cooling device includes an air conditioning system 8. The air conditioning system 8 controls the temperature inside the test box 1. The heating device can create a high-temperature environment within test chamber 1; the cooling device can create an extremely cold environment within test chamber 1; the heating and cooling devices can create an environment with a large temperature difference within test chamber 1; the heating device and the atomizing device can create a high-temperature and high-humidity environment within test chamber 1; the pressurizing device can apply a certain pressure to the concrete sample block to simulate a pressurized environment. The concrete sample block is exposed to the corresponding environment for a period of time, and its cracking is observed. The heating device uses a resistance wire heater 16.

[0015] Furthermore, the pressing plate 5 is detachably connected to the output shaft of the cylinder 6. The shape and specifications of the pressing plate 5 can be changed according to the shape of the concrete sample block.

[0016] Furthermore, the lower end of the test box 1 is fixedly connected to a base 9, which houses a drawer compartment 10. A drawer opening is provided on one side of the base 9, connecting to the drawer compartment 10. A water collection drawer 11 is located within the drawer compartment 10. The bottom plate 4 of the test box 1 is provided with several water holes 12 connecting to the drawer compartment 10. The water formed by condensation of the atomized water vapor sprayed by the atomizing nozzle 7 is collected by the water collection drawer 11. The water collection drawer 11 is periodically removed and drained.

[0017] Furthermore, an observation window 13 is provided on the box door 2, and transparent glass or transparent plastic is installed at the observation window 13. Through the observation window 13, the cracking condition of the concrete sample block can be checked in real time.

[0018] Furthermore, one side of the test box 1 is connected to an air pipe 14, which communicates with the interior of the test box 1. An exhaust fan is installed on the air pipe 14. When the test box 1 needs to quickly exhaust high-humidity air, the exhaust fan can be started to achieve rapid exhaust.

[0019] Furthermore, the test box 1 is equipped with a temperature and humidity sensor 15 for detecting the temperature and humidity inside the test box 1. The temperature and humidity of the test box 1 can be monitored in real time through the temperature and humidity sensor 15.

[0020] It is worth mentioning that the technical features such as the cylinder, air-conditioning system, temperature and humidity sensors involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can adopt the conventional selection in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not be further elaborated.

[0021] The above describes in detail the preferred specific embodiments of the present invention. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of existing technologies should be within the scope of protection determined by the claims.

Claims

1. Concrete crack resistance testing device, characterized in that, The test box includes a test box with a box opening on one side and a box door hinged at the box opening. The test box is equipped with a sample rack, a heating device, a pressurizing device, an atomizing device, and a cooling device. The sample rack is placed on the bottom plate of the test box, and the heating device is installed on the inner wall of the test box. The pressurizing device includes a pressing plate and a cylinder. The cylinder is installed on the test box. The pressing plate is arranged inside the test box and above the sample rack. The pressing plate is driven up and down by the cylinder. The atomizing device includes a plurality of atomizing nozzles installed in the test box. The atomizing nozzles are connected to the water tank through water pipes. A water pump is installed on the water pipes. The cooling device includes an air-conditioning system. The air-conditioning system controls the temperature inside the test box.

2. The concrete crack resistance testing device according to claim 1, characterized in that: The pressing plate is detachably connected to the output shaft of the cylinder.

3. The concrete crack resistance testing device according to claim 1, characterized in that: The lower end of the test box is fixedly connected to a base, a drawer chamber is provided inside the base, a drawer opening connected to the drawer chamber is provided on one side of the base, a water receiving drawer is provided in the drawer chamber, and a plurality of water permeable holes connected to the drawer chamber are provided on the bottom plate of the test box.

4. The concrete crack resistance testing device according to claim 1, characterized in that: An observation window is provided on the box door, and transparent glass or transparent plastic is installed at the observation window.

5. The concrete crack resistance testing device according to claim 4, characterized in that: One side of the test box is connected to an air pipe, the air pipe is connected to the interior of the test box, and an exhaust fan is installed on the air pipe.

6. The concrete crack resistance testing device according to claim 1, characterized in that: The test box is equipped with a temperature and humidity sensor for detecting the temperature and humidity inside the test box.

Images