SAP internal curing sulphoaluminate cement concrete test piece curing device in salt freezing environment

Abstract

The utility model discloses an SAP internal curing sulphoaluminate cement concrete test piece curing device in a salt freezing environment, which belongs to the technical field of building material test equipment, and adopts the technical scheme that the SAP internal curing sulphoaluminate cement concrete test piece curing device comprises a curing box, a simulation component is arranged at the top of the curing box, and an auxiliary component is arranged in the curing box; the simulation assembly comprises a solution box bolted to the top of the curing box, a feeding port is formed in the top of the solution box, and a top cover is clamped to the inner side of the feeding port. The problems that when a concrete test piece is cured in a simulated salt freezing environment, the concentration of salt contacted with the test piece at different positions is different, the accuracy of a test result is influenced, and when the concrete test piece is cured in the simulated salt freezing environment, different test stages in a curing box are inconvenient to accurately control and different temperature conditions are required, and the test result is influenced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to building material test equipment technical field especially relates to a kind of SAP internal curing sulphoaluminate cement concrete test piece curing device under salt freeze environment. BACKGROUND

[0002] Sulphoaluminate cement has early strength, high strength, good permeability resistance, strong sulphate attack resistance and other advantages, has wide application prospect in infrastructure construction, such as road, bridge, underground engineering, in cold region or contact deicing salt and other salt freeze environment, sulphoaluminate cement concrete faces severe test, salt freeze cycle can cause stress damage inside concrete, surface erosion, cracking and other problems, seriously affect its durability and service life.

[0003] For the above problems, the existing patent gives a solution, the existing SAP internal curing sulphoaluminate cement concrete test piece curing device under salt freeze environment is not convenient to ensure that the concentration of salt solution remains uniform, so that the salt concentration contacted by test piece at different positions is different, affect test result accuracy, and when curing concrete test piece under simulated salt freeze environment, it is not convenient to accurately control different test stages and require different temperature conditions in curing box, affect test result.

[0004] Therefore, a kind of SAP internal curing sulphoaluminate cement concrete test piece curing device under salt freeze environment is provided. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of SAP internal curing sulphoaluminate cement concrete test piece curing device under salt freeze environment, can solve the existing SAP internal curing sulphoaluminate cement concrete test piece curing device under salt freeze environment is not convenient to ensure that the concentration of salt solution remains uniform, so that the salt concentration contacted by test piece at different positions is different, affect test result accuracy, and when curing concrete test piece under simulated salt freeze environment, it is not convenient to accurately control different test stages and require different temperature conditions in curing box, affect test result Problem.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of SAP internal curing sulphoaluminate cement concrete test piece curing device under salt freeze environment, including curing box, the top of the curing box is provided with simulation assembly, the inside of the curing box is provided with auxiliary assembly;

[0007] The simulation assembly comprises a solution tank bolted to the top of the curing box, a feeding port is formed in the top of the solution tank, a top cover is clamped to the inner side of the feeding port, a driving motor is fixedly connected to the top of the solution tank, an output end of the driving motor is fixedly connected with a rotating rod, the outer side of the rotating rod is fixedly connected with stirring blades, a circulating pump is bolted to the top of the curing box, the circulating pump is communicated with the solution tank, a connecting pipe is communicated with the output end of the circulating pump, and a spraying pipe is communicated with the bottom of the connecting pipe.

[0008] Preferably, a cavity is formed in the inner wall of the curing box, heating wires are arranged in the cavity, an intelligent temperature controller is arranged on the left side of the curing box, the intelligent temperature controller is electrically connected with the heating wires, a fixing block is clamped to the outer side of the intelligent temperature controller, and the fixing block is bolted to the curing box.

[0009] Preferably, a refrigeration machine is bolted to the bottom of the curing box, a refrigeration pipe is communicated with the output end of the refrigeration machine, and the refrigeration pipe is arranged in the cavity.

[0010] Preferably, a drying filter is arranged on the outer side of the refrigeration pipe, and the drying filter is bolted to the right side of the curing box.

[0011] Preferably, a guide rail is fixedly connected in the curing box, a sample holder is slidably connected to the inner side of the guide rail, and a groove is formed in the top of the sample holder.

[0012] Preferably, an auxiliary frame is bolted to the bottom of the curing box, a liquid inlet pipe is connected to the rear side of the auxiliary frame, the liquid inlet pipe is bolted to the circulating pump, and a flow control valve is arranged on the outer side of the connecting pipe.

[0013] Preferably, a supporting block is fixedly connected to the bottom of the curing box, and the supporting block is clamped to the spraying pipe.

[0014] Preferably, a supporting leg is fixedly connected to the bottom of the curing box, an antiskid pad is bonded to the bottom of the supporting leg, and the antiskid pad is made of rubber.

[0015] Compared with the prior art, the simulation assembly can guarantee that each test piece is subjected to salt erosion of the same salt concentration, so that the test result is more reliable and comparable.

[0016] 1、The simulation assembly can guarantee that each test piece is subjected to salt erosion of the same salt concentration, so that the test result is more reliable and comparable.

[0017] 2、The application can ensure that the test is carried out in an accurate temperature environment through the auxiliary assembly, improve the accuracy of test data, and when simulating the performance of concrete in a low-temperature salt freezing environment in winter, the temperature can be accurately controlled in an actual low-temperature range, the reaction of the test piece is observed, so that the hydration reaction rates of each part of the test piece are similar, and the measured strength data can more truly reflect the performance of the concrete. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an overall structural view of the SAP internal curing sulphoaluminate cement concrete test piece curing device in a salt freezing environment.

[0019] Figure 2 It is a cutting drawing of the simulation assembly.

[0020] Figure 3 It is a structural schematic view of the auxiliary assembly.

[0021] Figure 4 It is a structural schematic view of the intelligent temperature controller and the heating wire.

[0022] Figure 5 It is a structural schematic view of the curing box.

[0023] Figure 6 It is a front view of the curing box.

[0024] Figure 7 It is a rear view of the curing box.

[0025] In the drawing, 1, the curing box; 2, the guide rail; 3, the test sample frame; 4, the recess; 5, the simulation assembly; 501, the solution box; 502, the feeding port; 503, the top cover; 504, the driving motor; 505, the rotating rod; 506, the stirring blade; 507, the circulating pump; 508, the connecting pipe; 509, the spraying pipe; 6, the auxiliary assembly; 601, the cavity; 602, the heating wire; 603, the intelligent temperature controller; 604, the fixing block; 605, the refrigeration machine; 606, the refrigeration pipe; 607, the drying filter; 7, the auxiliary frame; 8, the liquid inlet pipe; 9, the flow control valve; 10, the supporting block; 11, the supporting leg; 12, the anti-skid pad. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-7 The utility model provides technical schemes:

[0028] A kind of SAP internal maintenance sulphoaluminate cement concrete test piece curing device under salt freeze environment, including curing box 1, the top of curing box 1 is provided with simulation assembly 5, the inside of curing box 1 is provided with auxiliary assembly 6;

[0029] Simulation assembly 5 includes solution tank 501 being bolted to the top of curing box 1, the top of solution tank 501 is provided with feed inlet 502, the inside of feed inlet 502 is clamped with top cover 503, the top of solution tank 501 is fixedly connected with driving motor 504, the output end of driving motor 504 is fixedly connected with rotating rod 505, the outside of rotating rod 505 is fixedly connected with stirring blade 506, the top of curing box 1 is bolted with circulating pump 507, circulating pump 507 is communicated with solution tank 501, the output end of circulating pump 507 is communicated with connecting pipe 508, the bottom of connecting pipe 508 is communicated with spray pipe 509.

[0030] In the embodiment: by feed inlet 502 on the top of solution tank 501, add the water and salt and other raw materials required for preparation of salt solution, then clamping top cover 503 on feed inlet 502, start driving motor 504 on the top of solution tank 501, then driving motor 504 drives rotating rod 505 to rotate, then the stirring blade 506 outside rotating rod 505 rotates, then the solution in solution tank 501 is fully stirred, to ensure that its salt is completely dissolved in water, so that the concentration of salt solution is uniform, to provide stable salt solution conditions for subsequent accurate simulation of salt freeze environment, when needing to spray the test piece in curing box 1 with salt solution, open the circulating pump 507 bolted on the top of curing box 1, circulating pump 507 extracts the salt solution in solution tank 501, the solution first passes through the connecting pipe 508 communicated with the output end of circulating pump 507, then enters the bottom communicated spray pipe 509, and the salt solution is uniformly sprayed on the surface of the test piece in curing box 1 by spray pipe 509, to simulate the condition that the test piece is eroded by salt solution under salt freeze environment, by adjusting circulating pump 507, the spray flow of salt solution can be controlled to adapt to different test requirements.

[0031] Specifically, as shown in Figure 3 , Figure 4 The inner wall of curing box 1 is provided with cavity 601, the inside of cavity 601 is provided with heating wire 602, the left side of curing box 1 is provided with intelligent temperature controller 603, intelligent temperature controller 603 and heating wire 602 are electrically connected, the outside of intelligent temperature controller 603 is clamped with fixed block 604, and fixed block 604 is bolted with curing box 1.

[0032] Specifically, as shown in Figure 3 , Figure 6 , Figure 7As shown, the bottom of the curing box 1 is bolted with a refrigerator 605, and the output end of the refrigerator 605 is communicated with a refrigeration pipe 606 which is located inside the cavity 601.

[0033] Specifically, as shown in Figure 3 , Figure 6 , Figure 7 As shown, the outside of the refrigeration pipe 606 is provided with a drying filter 607 which is bolted with the right side of the curing box 1.

[0034] In this embodiment: when the test needs to raise the temperature inside the curing box 1, the target temperature is set by the intelligent temperature controller 603 provided on the left side of the curing box 1, and the intelligent temperature controller 603 is electrically connected with the heating wire 602 in the cavity 601 of the inner wall of the curing box 1. According to the difference between the set temperature and the actual temperature in the box, the intelligent temperature controller 603 controls the on-off of the heating wire 602, and when the current passes through the heating wire 602, the heating wire 602 generates heat, and then the heat is transmitted to the inside of the curing box 1 through the wall of the cavity 601, so that the temperature in the box rises. Since the heating wire 602 is distributed in the cavity 601, the heat can be evenly distributed to the internal space of the curing box 1, ensuring that the temperature in the box rises uniformly. If the test needs to reduce the temperature inside the curing box 1, start the refrigerator 605 bolted at the bottom of the curing box 1, and then the refrigerator 605 works to generate cold, which circulates in the cavity 601 through the refrigeration pipe 606 communicated with the output end of the refrigerator 605. The refrigeration pipe 606 located in the cavity 601 can make the cold evenly distributed around the wall of the curing box 1, thereby reducing the temperature in the box. At the same time, the drying filter 607 provided outside the refrigeration pipe 606 can prevent water vapor in the air from condensing into water droplets on the surface of the refrigeration pipe 606 and entering the curing box 1, avoiding the interference of the increase of humidity in the box caused by water vapor condensation to the simulation of salt freeze environment.

[0035] Specifically, as shown in Figure 5 , Figure 6 The inside of the curing box 1 is fixedly connected with a guide rail 2, the inside of the guide rail 2 is slidably connected with a sample rack 3, and the top of the sample rack 3 is provided with a groove 4.

[0036] Specifically, as shown in Figure 6 , Figure 7 The bottom of the curing box 1 is bolted with an auxiliary frame 7, the rear side of the auxiliary frame 7 is connected with a liquid inlet pipe 8, the liquid inlet pipe 8 is bolted with a circulating pump 507, and the outside of the connecting pipe 508 is provided with a flow control valve 9.

[0037] In the embodiment, the guide rail 2, the sample rack 3 and the groove 4 are arranged, when preparing the curing test piece, the sample rack 3 is slowly pushed into the curing box 1 along the guide rail 2 until it is pushed to the appropriate position, and then the prepared sulphate cement concrete test piece is placed in the groove 4 on the top of the sample rack 3 one by one, the size of the groove 4 is matched with the test piece, so that the test piece can be stably placed in the groove 4 and cannot shake or roll, when the test piece needs to be taken out at the end of the curing process, the sample rack 3 is pulled out of the curing box 1 along the guide rail 2, so that the test piece can be quickly taken out, the auxiliary frame 7, the liquid inlet pipe 8 and the flow control valve 9 are arranged, the bottom liquid inlet pipe 8 enables the salt solution to slowly rise from the bottom to soak the test piece, cooperates with the sprayed salt solution to form a comprehensive salt solution curing environment, the flow of the salt solution is controlled through the flow control valve 9 to adapt to different test requirements, and meanwhile the normal operation of the salt solution circulating system is ensured.

[0038] Specifically, as shown in Figure 6 The bottom of the curing box 1 is fixedly connected with a support block 10, and the support block 10 is clamped with the spraying pipe 509.

[0039] Specifically, as shown in Figure 1 The bottom of the curing box 1 is fixedly connected with a support leg 11, and the bottom of the support leg 11 is bonded with an antiskid pad 12, and the antiskid pad 12 is made of rubber.

[0040] In the embodiment, the support block 10 is arranged to clamp the spraying pipe 509, so that the spraying pipe 509 can be kept in a stable position in the curing box 1, and the uniform spraying of the salt solution on the test piece is ensured, the support leg 11 and the antiskid pad 12 are arranged, the support leg 11 provides stable support for the device, and meanwhile the antiskid pad 12 can prevent the device from sliding during operation, and the safety and stability of the curing process are ensured.

[0041] Working principle: in the process of using the SAP internal curing sulphoaluminate cement concrete specimen curing device in salt freeze environment, first, the prepared sulphoaluminate cement concrete specimen is placed on the specimen holder 3 in the curing box 1, the specimen holder 3 is fixed on the specimen by the groove 4 on the top of the specimen holder 3, to prevent the specimen from moving during the curing process, then the guide rail 2 fixedly connected inside the curing box 1 provides sliding guide for the specimen holder 3, so as to push or pull out the specimen holder 3 from the curing box 1, facilitate the placement and removal operation of the specimen, add the water and salt and other raw materials required for preparing the salt solution through the feed inlet 502 on the top of the solution tank 501, then clamp the top cover 503 on the feed inlet 502, start the drive motor 504 on the top of the solution tank 501, then the drive motor 504 drives the rotating rod 505 to rotate, then the stirring blade 506 outside the rotating rod 505 rotates, then the solution in the solution tank 501 is fully stirred to ensure that the salt is completely dissolved in the water, so that the concentration of the salt solution is uniform, to provide stable salt solution conditions for subsequent accurate simulation of salt freeze environment, when the specimen in the curing box 1 needs to be sprayed with salt solution, open the circulating pump 507 bolted on the top of the curing box 1, the circulating pump 507 pumps out the salt solution in the solution tank 501, the solution first passes through the connecting pipe 508 connected to the output end of the circulating pump 507, then enters the bottom connected spray pipe 509, the spray pipe 509 uniformly sprays the salt solution on the surface of the specimen in the curing box 1, simulates the erosion of the specimen in the salt freeze environment, by adjusting the circulating pump 507, the spray flow of the salt solution can be controlled to meet different test requirements, when the test needs to raise the temperature in the curing box 1, set the target temperature through the intelligent temperature controller 603 arranged on the left side of the curing box 1, the intelligent temperature controller 603 is electrically connected with the heating wire 602 in the cavity 601 of the inner wall of the curing box 1, according to the difference between the set temperature and the actual temperature in the box, then the intelligent temperature controller 603 controls the on-off of the heating wire 602, when the current passes through the heating wire 602, the heating wire 602 generates heat, then the heat is transmitted to the inside of the curing box 1 through the wall of the cavity 601, so that the temperature in the box rises, since the heating wire 602 is distributed in the cavity 601, the heat can be evenly distributed to the inside space of the curing box 1, to ensure that the temperature in the box rises uniformly, if the test needs to reduce the temperature in the curing box 1, start the refrigerating machine 605 bolted at the bottom of the curing box 1, then the refrigerating machine 605 works to produce cold, the cold is circulated in the cavity 601 through the refrigeration pipe 606 connected to the output end of the refrigerating machine 605, the refrigeration pipe 606 located in the cavity 601 can make the cold evenly distributed around the wall of the curing box 1, so as to reduce the temperature in the box, at the same time, the dry filter 607 arranged outside the refrigeration pipe 606 can prevent the water vapor in the air from condensing into water droplets on the surface of the refrigeration pipe 606 and entering the curing box 1, to avoid the increase of humidity in the box caused by the condensation of water vapor, which interferes with the simulation of salt freeze environment.

[0042] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A curing device for curing sulphoaluminate cement concrete specimens in SAP under a salt-freezing environment, comprising a curing box (1), characterized in that: A simulation component (5) is provided on the top of the curing box (1), and an auxiliary component (6) is provided inside the curing box (1); The simulation component (5) includes a solution tank (501) bolted to the top of the curing box (1), a feed port (502) is provided on the top of the solution tank (501), a top cover (503) is clamped on the inner side of the feed port (502), a driving motor (504) is fixedly connected to the top of the solution tank (501), a rotating rod (505) is fixedly connected to the output end of the driving motor (504), a stirring blade (506) is fixedly connected to the outer side of the rotating rod (505), a circulating pump (507) is bolted to the top of the curing box (1), the circulating pump (507) is connected to the solution tank (501), the output end of the circulating pump (507) is connected to a connecting pipe (508), and the bottom of the connecting pipe (508) is connected to a spray pipe (509).

2. The curing device for sulphoaluminate cement concrete specimens cured in SAP under a salt-freezing environment according to claim 1, characterized in that: The inner wall of the curing box (1) is provided with a cavity (601), a heating wire (602) is provided inside the cavity (601), an intelligent temperature controller (603) is provided on the left side of the curing box (1), the intelligent temperature controller (603) is electrically connected to the heating wire (602), a fixing block (604) is clamped on the outer side of the intelligent temperature controller (603), and the fixing block (604) is bolted to the curing box (1).

3. The curing device for curing sulphoaluminate cement concrete specimens in a salt-freezing environment according to claim 2, characterized in that: A refrigerator (605) is bolted to the bottom of the curing box (1), and an output end of the refrigerator (605) is connected to a refrigeration pipe (606), which is located inside the cavity (601).

4. The curing device for curing sulphoaluminate cement concrete specimens in a salt-freezing environment according to claim 3, characterized in that: A drying filter (607) is provided on the outside of the refrigeration pipe (606), and the drying filter (607) is bolted to the right side of the curing box (1).

5. The curing device for sulphoaluminate cement concrete specimens in a salt-freezing environment according to claim 1, characterized in that: The interior of the curing box (1) is fixedly connected to a guide rail (2), the inner side of the guide rail (2) is slidably connected to a sample rack (3), and a groove (4) is provided on the top of the sample rack (3).

6. The curing device for sulphoaluminate cement concrete specimens in a salt-freezing environment according to claim 1, characterized in that: An auxiliary frame (7) is bolted to the bottom of the curing box (1), a liquid inlet pipe (8) is connected to the rear side of the auxiliary frame (7), the liquid inlet pipe (8) is bolted to the circulation pump (507), and a flow control valve (9) is provided on the outside of the connecting pipe (508).

7. The curing device for sulphoaluminate cement concrete specimens in a salt-freezing environment according to claim 1, characterized in that: A support block (10) is fixedly connected to the bottom of the curing box (1), and the support block (10) is clamped to the spray pipe (509).

8. The curing device for sulphoaluminate cement concrete specimens in a salt-freezing environment according to claim 1, characterized in that: The bottom of the maintenance box (1) is fixedly connected to a support leg (11), and the bottom of the support leg (11) is bonded with an anti-slip pad (12), and the anti-slip pad (12) is made of rubber.

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