Concrete corrosion resistance testing device

Abstract

The utility model discloses a concrete corrosion resistance test device, which comprises a box body, a liquid inlet, a liquid outlet, a water inlet, a water outlet, a water outlet, a water inlet pipe, a water outlet pipe, a water inlet pipe and a water outlet pipe, and is characterized in that the box body is provided with an inner cavity; a bearing platform; the multiple concrete test block mounting structures correspond to the multiple pairs of longitudinal sliding grooves one to one, each concrete test block mounting structure comprises at least two supporting seats, and each supporting seat comprises a pair of supporting frames, a pair of sliding blocks, a pair of jacking transverse rods and a tensioning transverse rod; the stirring shaft is mounted at the inner bottom of the cover plate, and the stirring shaft is driven by a stirring motor to drive blades to rotate. The device disclosed by the utility model can simulate the impact of artificial seawater serving as a corrosive liquid on concrete, and can be used for carrying out corrosion resistance tests on a plurality of concrete test blocks, so that the quality of the concrete test blocks is detected.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete durability performance testing, and more specifically, to a concrete corrosion resistance testing device. Background Art

[0002] Concrete is an important building material and is widely used in buildings such as bridges, roads, and buildings. The quality of concrete determines the service life of a construction project, and the performance of concrete is receiving more and more attention. Concrete will be damaged by various factors during use, which seriously affects the service life of the building. For example, during seawater corrosion, the salts in the seawater form crystals through migration and water evaporation, or react with the hydration products in the concrete, causing cracks or even peeling of the concrete. Therefore, it is very important to perform performance testing on the concrete before it is put into use, among which corrosion resistance is an important testing indicator. The utility model patent with authorization announcement number CN220271074U discloses a simulation test device for the impact and wear resistance of concrete test blocks, which places the concrete test block in a simulation experimental container and fixes the concrete test block by clamping. The problem is that a concrete test block needs to be inserted horizontally and placed in the reserved space of the support frame first, and then the concrete test block is fixed by a top-down fixing structure. On the one hand, the insertion and removal of the concrete test block are inconvenient, and on the other hand, only one concrete test block can be tested. Therefore, the present application urgently needs to solve the above-mentioned problem and provide a device that is easy to operate and can perform corrosion resistance tests on multiple concrete test blocks at the same time. Utility Model Content

[0003] The utility model provides a concrete corrosion resistance testing device, which can simulate artificial seawater as a corrosive liquid to simulate the impact of seawater on concrete, and simultaneously perform corrosion resistance tests on multiple concrete test blocks, thereby detecting the quality of the concrete test blocks.

[0004] In order to achieve these purposes and other advantages according to the present invention, a concrete corrosion resistance testing device is provided, comprising:

[0005] A box body having an inner cavity, a detachable cover plate on the top of the box body, and a liquid inlet and a liquid outlet;

[0006] A supporting platform is provided at the bottom of the box body, and the supporting platform has multiple pairs of longitudinal slide grooves;

[0007] A plurality of concrete test block mounting structures, which correspond one to one with a plurality of pairs of longitudinal slide grooves, the concrete test block mounting structure includes at least two support seats, the support seats include a pair of support frames, a pair of sliders, a pair of tightening cross bars, and a tightening cross bar, a pair of sliders are provided at the bottom of the pair of support frames, the pair of sliders slide in the pair of longitudinal slide grooves, a pair of supporting plates are provided in the middle of the pair of support frames to form a supporting surface of the concrete test block, a pair of first tightening screw holes are provided on the upper part of the pair of support frames, a pair of tightening cross bars pass through the pair of first tightening screw holes to tighten a pair of lateral sides of the concrete test block and are tightened with the first tightening nuts on the outer sides of the pair of support frames, a pair of tightening through holes are provided at the lower part of the pair of support frames, the tightening cross bars pass through the pair of tightening through holes and are tightened with the tightening nuts on the outer sides of the pair of support frames;

[0008] A stirring shaft is installed on the inner bottom of the cover plate, and the stirring shaft drives the blades to rotate when driven by the stirring motor.

[0009] Preferably, a certain distance is formed between the support platform and the side wall of the box body, and the drain port is arranged at the bottom of the box body.

[0010] Preferably, the tank is provided with a liquid level sensor.

[0011] Preferably, the concrete test block mounting structure further includes a pair of tightening longitudinal rods and a pair of mounting frames, the pair of mounting frames are arranged on the side walls of the box body, the mounting frames are of a U-shaped structure, and the middle plates of the pair of mounting frames are provided with second tightening screw holes, the pair of tightening longitudinal rods are screwed into the pair of second tightening screw holes to tighten the pair of longitudinal sides of the concrete test block and are tightened with the second tightening nuts on the outside of the middle plates of the pair of mounting frames.

[0012] Preferably, the concrete test block mounting structure further comprises a compression spring and a compression plate, one end of the compression spring is connected to the inner bottom of the cover plate, and the other end is connected to the compression plate.

[0013] Preferably, the longitudinal cross-sections of the longitudinal sliding groove and the sliding block are both T-shaped.

[0014] The utility model has at least the following beneficial effects:

[0015] First, the utility model forms an installation platform for multiple concrete test blocks by providing a base, a pair of tightening cross bars limit the displacement of the concrete test blocks so that the concrete test blocks are fixed laterally, and the tensioning cross bars limit the displacement of a pair of support frames so that the concrete test blocks are fixed longitudinally through stress, and artificial seawater is simulated as a corrosive liquid to simulate the impact of seawater on concrete, thereby detecting the quality of the concrete test blocks.

[0016] Second, the liquid inlet of the box body is connected to the pump and the corrosion liquid tank through the liquid inlet pipe. The liquid inlet is located at the upper part of the box body and can be set in multiple ways. The discharge port of the box body is connected to the pump and the recovery liquid tank through the discharge pipe. The discharge port is located at the bottom of the box body and can be set in multiple ways. The base is set in the inner cavity at a certain height. The longitudinal slide groove provided in the base is used to install the slider, and at the same time further disrupts the turbulence at the bottom of the inner cavity. A pair of longitudinal slide grooves are used to install a concrete test block mounting structure for fixing a concrete test block. A concrete test block mounting structure includes at least two support seats arranged along the longitudinal direction, preferably two to three. The support frame is slidably connected to the longitudinal slide groove through the slider. A support plate is set on the opposite side of the support frame. The spacing between a pair of support plates is less than the width of the concrete test block. Multiple pairs of support plates The length of the concrete test block is less than that of the concrete test block, and a pair of support frames are tightened and fixed on the lateral outer side of a concrete test block through a pair of tightening cross bars. Multiple pairs of tightening cross bars form multiple tightening positions, which cooperate to prevent the concrete test block from lateral displacement. A pair of support frames are also tightened and fixed on the lateral outer side of a pair of support frames through a tightening cross bar. The cooperation of the tightening cross bar and the first tightening nut makes the pair of support frames stress connected, so that the pair of support frames do not undergo longitudinal displacement, thereby preventing the concrete test block from longitudinal displacement. The stirring shaft is connected to the cover bearing, and the stirring shaft passes through the cover and is fixedly connected to the stirring motor. The length of the stirring shaft is set to not contact the concrete test block, and the blades are set to be long strips and do not contact the concrete test block, disturbing the turbulence of the inner cavity within a larger range.

[0017] Third, when in use, open the cover, place multiple concrete specimens on the support plate one by one, tighten the first tightening nut, tighten the tensioning nut to make the concrete specimens relatively fixed, inject artificial seawater into the inner cavity, use conventional formulas, such as NaCl, MgCl2, Na2SO4, CaCl2, KCl and other formulas in a certain amount, wait until the corrosive liquid covers the concrete specimen and reaches a preset height, cover the cover, start the stirring motor for stirring, set the humidity and temperature of the inner cavity, take out the concrete specimen after the test reaches the set time, observe the surface cracks and peeling, and test the corrosion resistance with instruments.

[0018] Fourth, the distance between the support and the inner wall of the box creates a stepped structure that disrupts the turbulence at the bottom of the inner cavity. A liquid level sensor determines the injection height, ensuring that the corrosive liquid submerges the concrete test block to a preset height. Preferably, an artificial window can be provided to observe the liquid level inside the box. The longitudinal chute and slider are configured in a matching T-shaped structure, preventing vertical and lateral displacement of the pair of support frames.

[0019] Fifth, by equipping each concrete test block mounting structure with a pair of tightening longitudinal rods and a pair of mounting brackets, the pair of mounting brackets, through the pair of tightening longitudinal rods, tighten and further secure the longitudinal outer side of a concrete test block, assisting in tightening the longitudinal rods and preventing the concrete test block from longitudinal displacement. By equipping each concrete test block mounting structure with a compression spring and a compression plate, the compression spring, when compressed by external force, generates elastic force against the top of the concrete test block, tightening and securing the top of the concrete test block, assisting the pair of support brackets and preventing the concrete test block from vertical displacement.

[0020] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a technical solution of the utility model;

[0022] Figure 2 This is a horizontal schematic diagram of a concrete test block installation structure according to a technical solution of the present invention;

[0023] Figure 3 This is a longitudinal schematic diagram of a concrete test block installation structure according to a technical solution of the present utility model. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0025] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0026] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense. For example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The directions or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0027] like Figure 1 As shown, the utility model provides a concrete corrosion resistance testing device, comprising:

[0028] A box body having an inner cavity, a detachable cover plate on the top of the box body, and a liquid inlet and a liquid outlet;

[0029] A support 1 is provided at the bottom of the box body, and the support 1 has multiple pairs of longitudinal slide grooves 2;

[0030] A plurality of concrete test block 8 mounting structures, which correspond one-to-one to a plurality of pairs of longitudinal slide grooves 2, the concrete test block 8 mounting structure includes at least two support seats, the support seats include a pair of support frames 3, a pair of sliders 4, a pair of tightening cross bars 5, and a tightening cross bar 6. A pair of sliders 4 are provided at the bottom of the pair of support frames 3, and the pair of sliders 4 slide in the pair of longitudinal slide grooves 2. A pair of supporting plates 7 are provided in the middle of the pair of support frames 3 to form a supporting surface of the concrete test block 8. A pair of first tightening screw holes are provided on the upper part of the pair of support frames 3, a pair of tightening cross bars 5 are screwed into the pair of first tightening screw holes to tighten a pair of lateral sides of the concrete test block 8 and are tightened with the first tightening nuts 9 on the outer sides of the pair of support frames 3. A pair of tightening through holes are provided at the lower part of the pair of support frames 3, and the tightening cross bars 6 pass through the pair of tightening through holes and are tightened with the tightening nuts 10 on the outer sides of the pair of support frames 3;

[0031] The stirring shaft 16 is mounted on the inner bottom of the cover plate. The stirring shaft 16 drives the blades 17 to rotate when driven by the stirring motor.

[0032] In the above technical solution, a base 1 is provided to form an installation platform for multiple concrete test blocks 8, a pair of tightening cross bars 5 limit the displacement of the concrete test blocks 8 so that the concrete test blocks 8 are fixed laterally, and the tensioning cross bars 6 limit the displacement of a pair of support frames 3 so that the concrete test blocks 8 are fixed longitudinally through stress. Artificial seawater is simulated as a corrosive liquid to simulate the impact of seawater on concrete, thereby detecting the quality of the concrete test blocks 8.

[0033] The liquid inlet of the box body is connected to the pump and the corrosion liquid tank through the liquid inlet pipe. The liquid inlet is located at the upper part of the box body and can be set in multiple ways. The discharge port of the box body is connected to the pump and the recovery liquid tank through the discharge pipe. The discharge port is located at the bottom of the box body and can be set in multiple ways. Each discharge port is provided with necessary valves; the base 1 is arranged in the inner cavity at a certain height, and the longitudinal slide 2 arranged in the base 1 is used to install the slider 4, while further disrupting the turbulence at the bottom of the inner cavity. A pair of longitudinal slides 2 are used to install a concrete test block 8 mounting structure for fixing a concrete test block 8. A concrete test block 8 mounting structure includes at least two support seats arranged in the longitudinal direction, preferably two to three. The support frame 3 is slidably connected to the longitudinal slide 2 through the slider 4. A support plate 7 is provided on the opposite side of the support frame 3. The spacing between a pair of support plates 7 is less than the width of the concrete test block 8, and multiple pairs of support plates 7 The length of the concrete test block 8 is less than that of the concrete test block 8. A pair of support frames 3 are tightened and fixed on the lateral outer side of a concrete test block 8 through a pair of tightening cross bars 5. Multiple pairs of tightening cross bars 5 form multiple tightening positions, which cooperate to prevent the concrete test block 8 from lateral displacement. A pair of support frames 3 are also tightened and fixed on the lateral outer side of a pair of support frames 3 through a tensioning cross bar 6. The tensioning cross bar 6 cooperates with the first tightening nut 9 to stress-connect the pair of support frames 3, so that the pair of support frames 3 do not undergo longitudinal displacement, thereby preventing the concrete test block 8 from longitudinal displacement. The stirring shaft 16 is connected to the cover bearing, and the stirring shaft 16 passes through the cover and is fixedly connected to the stirring motor. The length of the stirring shaft 16 is set to not contact the concrete test block 8, and the blade 17 is set to a long strip. The blade 17 does not contact the concrete test block 8, disturbing the turbulence of the inner cavity within a larger range.

[0034] During use, open the cover, place multiple concrete specimens one by one on the support plate 7, tighten the first tightening nut 9, tighten the tightening nut 10 to make the concrete specimens relatively fixed, close the valve, and inject artificial seawater into the inner cavity. Use conventional formulas, such as NaCl, MgCl2, Na2SO4, CaCl2, KCl, etc., compounded in a certain amount. Wait until the corrosive liquid covers the concrete specimen 8 and reaches a preset height, cover the cover, start the stirring motor for stirring, set the humidity and temperature of the inner cavity, take out the concrete specimen 8 after the test reaches the set time, observe the surface cracks and peeling, and test the corrosion resistance with instruments.

[0035] In another technical solution, the support 1 is spaced a certain distance from the side wall of the box, and the drain port is provided at the bottom of the box. The support 1 is spaced a certain distance from the inner wall of the box so that the stepped structure disrupts the turbulence at the bottom of the inner cavity.

[0036] In another technical solution, the box is provided with a liquid level sensor which can determine the injection height so that the corrosive liquid covers the concrete test block 8 to a preset height. Preferably, an artificial window can be provided to observe the liquid level inside the box.

[0037] like Figure 3 As shown, in another technical solution, the mounting structure of the concrete test block 8 also includes a pair of tightening longitudinal rods 11 and a pair of mounting frames 12. The pair of mounting frames 12 are arranged on the side walls of the box body. The mounting frames 12 are of a U-shaped structure. The middle plate of the pair of mounting frames 12 is provided with a second tightening screw hole. The pair of tightening longitudinal rods 11 are screwed into the pair of second tightening screw holes to tighten a pair of longitudinal sides of the concrete test block 8 and are tightened with the second tightening nuts 13 on the outer side of the middle plate of the pair of mounting frames 12.

[0038] In the above technical solution, a pair of tightening longitudinal rods 11 and a pair of mounting frames 12 are provided for the mounting structure of each concrete test block 8. The pair of mounting frames 12 tighten and further fix the longitudinal outer side of a concrete test block 8 through the pair of tightening longitudinal rods 11, and assist in tightening the longitudinal rods to prevent the concrete test block 8 from longitudinal displacement.

[0039] like Figure 2 、 3 As shown, in another technical solution, the concrete test block 8 installation structure further includes a compression spring 14 and a compression plate 15 , one end of the compression spring 14 is connected to the inner bottom of the cover plate, and the other end is connected to the compression plate 15 .

[0040] In the above technical solution, a compression spring 14 and a compression plate 15 are provided for the mounting structure of each concrete test block 8. When the compression spring 14 is compressed by an external force, an elastic force is generated to abut against the top of the concrete test block 8, thereby tightening and fixing the top of the concrete test block 8, and assisting a pair of support frames 3 to prevent the concrete test block 8 from vertical displacement.

[0041] In another technical solution, the longitudinal sections of the longitudinal chute 2 and the slider 4 are both T-shaped. The longitudinal chute 2 and the slider 4 are configured as matching T-shaped structures, which can limit the pair of support frames 3 from vertical and lateral displacement.

[0042] The number of devices and processing scales described herein are used to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.

[0043] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. Concrete corrosion resistance testing device, characterized in that, include: A box body having an inner cavity, a detachable cover plate on the top of the box body, and a liquid inlet and a liquid outlet; A supporting platform is provided at the bottom of the box body, and the supporting platform has multiple pairs of longitudinal slide grooves; A plurality of concrete test block mounting structures, which correspond one to one with a plurality of pairs of longitudinal slide grooves, the concrete test block mounting structure includes at least two support seats, the support seats include a pair of support frames, a pair of sliders, a pair of tightening cross bars, and a tightening cross bar, a pair of sliders are provided at the bottom of the pair of support frames, the pair of sliders slide in the pair of longitudinal slide grooves, a pair of supporting plates are provided in the middle of the pair of support frames to form a supporting surface of the concrete test block, a pair of first tightening screw holes are provided on the upper parts of the pair of support frames, a pair of tightening cross bars are screwed into the pair of first tightening screw holes to tighten a pair of lateral sides of the concrete test block and are tightened with the first tightening nuts on the outer sides of the pair of support frames, a pair of tightening through holes are provided at the lower parts of the pair of support frames, the tightening cross bars pass through the pair of tightening through holes and are tightened with the tightening nuts on the outer sides of the pair of support frames; A stirring shaft is installed on the inner bottom of the cover plate, and the stirring shaft drives the blades to rotate when driven by the stirring motor.

2. The concrete corrosion resistance testing device according to claim 1, characterized in that: A certain distance is formed between the support platform and the side wall of the box body, and the drain port is arranged at the bottom of the box body.

3. The concrete corrosion resistance testing device according to claim 1, characterized in that: The box body is provided with a liquid level sensor.

4. The concrete corrosion resistance testing device according to claim 1, characterized in that: The concrete test block mounting structure also includes a pair of tightening longitudinal rods and a pair of mounting frames. The pair of mounting frames are arranged on the side walls of the box body. The mounting frames are of a U-shaped structure. The middle plates of the pair of mounting frames are provided with second tightening screw holes. The pair of tightening longitudinal rods are screwed into the pair of second tightening screw holes to tighten the pair of longitudinal sides of the concrete test block and are tightened with the second tightening nuts on the outer sides of the middle plates of the pair of mounting frames.

5. The concrete corrosion resistance testing device according to claim 1, characterized in that: The concrete test block installation structure further includes a compression spring and a compression plate. One end of the compression spring is connected to the inner bottom of the cover plate, and the other end is connected to the compression plate.

6. The concrete corrosion resistance testing device according to claim 1, characterized in that: The longitudinal sections of the longitudinal sliding groove and the sliding block are both T-shaped.

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