Concrete disease inspection device

Abstract

The utility model discloses a concrete disease inspection device, relates to the technical field of concrete performance detection, and solves the problem that a performance inspection device capable of aiming at the alkali invasion phenomenon of different asphalt concrete layer pavement materials is lacked in the prior art. The device comprises a storage tank, a test piece, a mold and an environment simulation assembly, the test piece and the mold are bonded, a cavity is formed in the mold, the cavity is located above the mold, the cavity is communicated with the environment simulation assembly through a pipeline, the mold is placed in the storage tank, and a gap exists between the bottom of the mold and the storage tank; the purpose is that the test piece is bonded and sealed through the mold, the mold plays a role in supporting the test piece, the environment with the air pressure difference under the spontaneous combustion condition is simulated through the environment simulation assembly, and the mold and the test piece are sealed, so that an alkaline solution can only pass through the interior of the test piece, and the effect of ponding on the bridge floor in the natural environment is simulated. And the authenticity of the result is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of concrete performance detection, and particularly relates to a concrete disease inspection device. Background Art

[0002] At present, asphalt mixture is generally used as the surface paving material for the cement concrete bridge deck pavement. However, after the alternation of sunny and rainy days, alkali immersion phenomenon will occur on the asphalt concrete pavement layer of this type of bridge deck. The main reason for the alkali immersion phenomenon is that when the weather alternates between sunny and rainy days, air pressure changes will occur in the environment, resulting in an air pressure difference between the surface and the bottom of the bridge deck pavement layer. In the bridge deck pavement layer, due to the action of rainwater, the alkaline substances in the cement concrete layer are dissolved in the rainwater, and the rainwater is not drained from the bridge deck in time. Under the influence of the air pressure difference, the rainwater in the cement concrete layer will carry the alkaline substances up to the surface layer of the bridge deck. When the water gradually evaporates, white alkaline substances will be formed on the pavement layer, causing the alkali immersion phenomenon of the asphalt mixture. The alkali immersion phenomenon of the bridge deck pavement layer will not only affect the beauty of the road surface, but also cause road diseases, posing a huge potential safety hazard to driving safety.

[0003] At present, there is a lack of a performance inspection device that can target the alkali invasion phenomenon of different asphalt concrete layer paving materials. Therefore, in order to deeply study the alkali immersion phenomenon of the asphalt concrete mixture in the bridge deck pavement layer, it is necessary to develop an inspection device for the alkali immersion disease of the asphalt concrete in the bridge deck pavement layer to explore the alkali immersion performance of the asphalt concrete. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a concrete disease inspection device. The test piece is bonded and sealed by a mold, and the mold plays a role in supporting the test piece. An alkaline solution is placed inside the storage tank, and the environmental simulation component simulates an environment with an air pressure difference under natural combustion conditions. Since the mold and the test piece are sealed, the alkaline solution can only pass through the inside of the test piece, simulating the effect of bridge surface water accumulation in the natural environment and ensuring the authenticity of the results.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A concrete disease inspection device includes a storage tank, a test piece, a mold, and an environmental simulation component. The test piece is bonded to the mold. A chamber is provided inside the mold, and the chamber is located above the mold. The chamber is connected to the environmental simulation component through a pipeline. The mold is placed inside the storage tank, and there is a gap between the bottom of the mold and the storage tank.

[0007] With the above technical solution, the test piece is bonded and sealed by a mold, and the mold serves to support the test piece. An alkaline solution is placed inside the storage tank, and the environmental simulation component simulates an environment with a pressure difference under spontaneous combustion conditions. Since the mold and the test piece are sealed, the alkaline solution can only pass through the inside of the test piece, simulating the effect of bridge deck water accumulation in the natural environment and ensuring the authenticity of the results.

[0008] Preferably, the environmental simulation component includes a box body, a barometer, and a vacuum pump. The inside of the box body is communicated with the chamber, and the barometer and the vacuum pump are respectively communicated with the inside of the box body through pipelines.

[0009] With the above technical solution, the vacuum pump can evacuate the inside of the box body, so as to form a pressure difference inside the chamber, and the barometer is convenient for monitoring the air pressure inside the box body.

[0010] Preferably, a first opening is provided at the upper part of the mold, and a second opening is provided at the lower part of the box body. The mold and the box body are communicated through the first opening and the second opening; a gasket is provided between the box body and the mold, and a third opening matching the first opening and the second opening is provided at the center of the gasket.

[0011] With the above technical solution, the gasket is placed between the box body and the mold, which can seal the gap between the first opening and the second opening, preventing air from entering the box body and the mold during vacuum pumping.

[0012] Preferably, the test piece and the mold are bonded by an adhesive layer.

[0013] With the above technical solution, bonding is carried out through the adhesive layer. After the detection is completed, the adhesive layer can be removed to separate the test piece from the mold, so that the mold can be reused.

[0014] Preferably, a flexible blocking member is filled between the upper part of the test piece and the mold.

[0015] With the above technical solution, the setting of the blocking member can prevent the adhesive layer from falling off when it solidifies.

[0016] Preferably, a gap is formed between the lower part of the mold and the storage tank through several supports.

[0017] With the above technical solution, the formation of the gap facilitates the entry of the alkaline solution into the test piece from the lower part of the mold when a pressure difference is formed.

[0018] Preferably, the length, width, and height of the storage tank are 250 - 350 mm, 150 - 250 mm, and 100 - 200 mm respectively.

[0019] With the above technical solution, by setting the above size range, the size of the aqueous phase is limited to the optimal size with obvious changes in the water volume height, which is more convenient for measurement.

[0020] Preferably, the storage tank is a transparent material structure, and scale lines are provided on the side edges of the storage tank in the height direction.

[0021] With the above technical solution, by setting the storage tank as a transparent material, the scale of the change in the alkaline solution can be recorded in combination with the scale lines, and the amount of leached water can be calculated by the difference in scales to obtain the alkali invasion performance of the specimen.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows:

[0023] In this application, the specimen is bonded and sealed through a mold. The mold plays a role in supporting the specimen. An alkaline solution is placed inside the storage tank, and an environment with an air pressure difference under spontaneous combustion conditions is simulated through an environmental simulation component. Since the mold and the specimen are sealed, the alkaline solution can only pass through the inside of the specimen, simulating the effect of bridge surface water accumulation in the natural environment and ensuring the authenticity of the results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present utility model will be described by way of examples and with reference to the accompanying drawings, wherein:

[0025] Figure 1 is a schematic structural diagram of a concrete disease inspection device in the present utility model;

[0026] Figure 2 is a schematic connection structure diagram of the mold and the specimen in the present utility model;

[0027] Figure 3 is a schematic structural diagram of the box body in the present utility model.

[0028] REFERENCE NUMERALS

[0029] 1 - Box body; 2 - Barometer; 3 - Vacuum pump; 4 - Storage tank; 5 - Blocking member; 6 - Adhesive layer; 7 - Gasket; 8 - Mold; 9 - Specimen; 10 - Support; 11 - Alkaline solution. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Usually, the components of the embodiments of this application described and marked in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents the selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0031] In the description of the embodiments of this application, it should be noted that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships in which the utility model product is usually placed during use. These are only for the convenience of describing this application 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 therefore should not be construed as a limitation to this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0032] The following will be combined with Figures 1 to 3 to make a detailed description of the present utility model.

[0033] Embodiment 1

[0034] A concrete disease inspection device, referring to the attached Figures 1 to 3 , includes a storage tank 4, a test piece 9, a mold 8, and an environmental simulation component. The test piece 9 is bonded to the mold 8. A chamber is provided inside the mold 8. The chamber is located above the mold 8. The chamber is communicated with the environmental simulation component through a pipeline. The mold 8 is placed inside the storage tank 4, and there is a gap between the bottom of the mold 8 and the storage tank 4. In this application, the test piece 9 is adhesively sealed by the mold 8, and the mold 8 serves to support the test piece 9. An alkaline solution 11 is placed inside the storage tank 4, and the environmental simulation component is used to simulate an environment with an air pressure difference under spontaneous combustion conditions. Since the mold 8 and the test piece 9 are sealed, the alkaline solution 11 can only pass through the inside of the test piece 9, simulating the effect of bridge surface water accumulation in the natural environment and ensuring the authenticity of the results.

[0035] Among them, the mold 8 is made of acrylic and is cylindrical, with a diameter of 115 mm and a height of 65 mm;

[0036] The height dimension of the test piece 9 has a diameter of 101.6 mm and a height of 63.5 mm.

[0037] In this embodiment, referring to the attached Figure 3 , the environmental simulation component includes a box body 1, a barometer 2, and a vacuum pump 3. The interior of the box body 1 is communicated with the chamber. The barometer 2 and the vacuum pump 3 are respectively communicated with the interior of the box body 1 through pipelines. The vacuum pump 3 can evacuate the interior of the box body 1, so as to form an air pressure difference inside the chamber. The barometer 2 is convenient for monitoring the air pressure inside the box body 1;

[0038] Among them, the vacuum pump 3 is provided by Yuanxun Intelligent Technology Co., Ltd., and the specific model is AD5KEEDB24D, which can achieve a flow rate of 4 L / min;

[0039] Among them, the barometer 2 is provided by Shanghai Yio Instrument Equipment Co., Ltd., with the model BY-2003P and a measurement accuracy of 0.1 hPa;

[0040] Among them, the box body 1 is an acrylic box, which is convenient for observing the situation at the top of the test piece 9 through the transparent box body 1.

[0041] In this embodiment, a first opening is provided in the upper part of the mold 8, and a second opening is provided in the lower part of the box body 1. The mold 8 and the box body 1 are communicated through the first opening and the second opening. A gasket 7 is provided between the box body 1 and the mold 8. A third opening matching the first opening and the second opening is provided at the center of the gasket 7. The gasket 7 is placed between the box body 1 and the mold 8, and can seal the gap between the first opening and the second opening, preventing air from entering the box body 1 and the mold 8 during vacuum pumping.

[0042] Among them, the sizes of the first opening and the second opening are both 95 mm;

[0043] Among them, the gasket 7 is a silicone gasket 7. The size of the third opening in the middle of the silicone gasket 7 is 95 mm. After applying water on the silicone gasket 7, the upper and lower surfaces of the gasket 7 can adhere to each other between the mold 8 and the box body 1.

[0044] In this embodiment, the test piece 9 and the mold 8 are bonded by an adhesive layer 6. By bonding through the adhesive layer 6, after the detection is completed, the adhesive layer 6 can be removed, and the test piece 9 and the mold 8 can be separated, so that the mold 8 can be reused.

[0045] Among them, the adhesive layer 6 is formed by epoxy resin.

[0046] In this embodiment, a flexible blocking member 5 is filled between the upper part of the test piece 9 and the mold 8. The setting of the blocking member 5 can prevent the adhesive layer 6 from falling off during solidification.

[0047] Among them, the blocking member 5 is made of clay. When bonding the mold 8 and the test piece 9, the mold 8 is turned over, and the clay is placed at the bottom of the mold 8. Epoxy resin is injected into the gap formed between the mold 8 and the test piece 9. The clay can prevent the epoxy resin from leaking out of the gap until the epoxy resin forms a solid.

[0048] In this embodiment, a gap is formed between the lower part of the mold 8 and the storage tank 4 through several supports 10; the formation of the gap facilitates the entry of the lye into the test piece 9 from the lower part of the mold 8 when a pressure difference is formed.

[0049] In this embodiment, the length, width, and height of the storage tank 4 are 250 - 350 mm, 150 - 250 mm, and 100 - 200 mm respectively; by setting the above-mentioned dimensional range, the aqueous phase size is limited to the optimal size with a significant change in water volume height, which is more convenient for measurement.

[0050] Among them, the length, width, and height of the storage tank 4 are 250 * 150 * 100 mm respectively.

[0051] In this embodiment, the storage tank 4 is a transparent material structural member, and scale lines are provided on the side edges of the storage tank 4 along the height direction; by setting the storage tank 4 as a transparent material, the scale of the change in the alkaline solution 11 can be recorded in combination with the scale lines, and the leached water volume can be calculated through the difference in scales to obtain the alkali invasion performance of the test piece 9.

[0052] Working principle and usage process:

[0053] The specific test steps are as follows:

[0054] Step 1: Prepare test pieces 9 with different void ratios;

[0055] Step 2: Bond all the test pieces 9 to the mold 8. The top of the test piece 9 is bonded to the mold 8 with clay, and the side is bonded with epoxy resin. After pouring the epoxy resin, wait for 24 h to cure, and finally form an alkali immersion test mold 8;

[0056] Step 3: Place the fabricated test mold 8 in the storage tank 4, pour the alkaline solution 11 into the storage tank 4 so that its liquid level is 1 - 4 cm below the top of the test mold 8, then connect the vacuum pump 3 and the barometer 2 to the box body 1, and finally place the whole structure on the mold 8. The whole structure and the test mold 8 are sealed with a gasket 7;

[0057] Step 4: Turn on the vacuum pump 3 to pump air, adjust the air pressure in the box body 1 to the set value, start timing and record the scale at which the alkaline solution 11 is located in the storage tank 4. When the time stops, record the scale at which the alkaline solution 11 is located again, and indirectly calculate the leached water volume through the difference in scales to obtain the alkali immersion performance of the test piece 9.

[0058] Example 2

[0059] Different from Example 1, in this example, the length, width and height of the storage tank 4 are 350*250*200 mm respectively.

[0060] It should be noted that:

[0061] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete disease inspection device, characterized in that: The invention comprises a storage tank (4), a test piece (9), a mold (8) and an environmental simulation component, wherein the test piece (9) is bonded to the mold (8), a chamber is arranged inside the mold (8), the chamber is located above the mold (8), the chamber is connected to the environmental simulation component through a pipeline, the mold (8) is placed inside the storage tank (4), and there is a gap between the bottom of the mold (8) and the storage tank (4).

2. A concrete defect inspection device according to claim 1, characterized in that: The environmental simulation component comprises a box (1), a barometer (2) and a vacuum pump (3); the interior of the box (1) is connected to the chamber, and the barometer (2) and the vacuum pump (3) are respectively connected to the interior of the box (1) through pipelines.

3. A concrete disease inspection device according to claim 2, characterized in that: The upper part of the mold (8) is provided with a first opening, the lower part of the box body (1) is provided with a second opening, and the mold (8) and the box body (1) are connected through the first opening and the second opening; a gasket (7) is provided between the box body (1) and the mold (8), and a third opening that cooperates with the first opening and the second opening is provided at the center of the gasket (7).

4. A concrete defect inspection device according to claim 1, characterized in that: The test piece (9) and the mold (8) are bonded together using an adhesive layer (6).

5. A concrete defect inspection device according to claim 4, characterized in that: A flexible barrier (5) is filled between the upper part of the test piece (9) and the mold (8).

6. A concrete defect inspection device according to claim 1, characterized in that: A gap is formed between the lower part of the mold (8) and the storage tank (4) through a plurality of supports (10).

7. A concrete defect inspection device according to claim 1, characterized in that: The length, width and height of the storage tank (4) are 250-350 mm, 150-250 mm and 100-200 mm respectively.

8. The concrete defect inspection device according to claim 1, characterized in that: The storage tank (4) is a transparent material structural member, and scale lines are arranged on the side of the storage tank (4) along the height direction.

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