Testing device for measuring fluidity and adhesiveness of mortar

Abstract

The utility model provides a testing device for measuring fluidity and adhesiveness of mortar. The testing device comprises a bracket, a lifting platform device, a master controller, a container, a weighing machine, a fluidity testing device and an adhesiveness testing device, the fluidity testing device comprises a V-shaped funnel and a light receiver, a feeding port is formed above the V-shaped funnel and provided with a feeding cover, a discharging port is formed below the V-shaped funnel and provided with a discharging cover, and the light receiver is installed on the feeding cover and located in the V-shaped funnel; the adhesion test device comprises a mounting plate, a stone rod and a laser device, one end of the stone rod is adhered to the mounting plate, and the laser device is mounted at the edge of the mounting plate; the bracket and the lifting platform device are mounted on the bottom plate; the fluidity test device or the adhesiveness test device is placed on the lifting platform device; the weighing device is placed on the bottom plate, and the container is placed on the weighing device; according to the test device, test errors caused by human factors can be reduced, and the test accuracy is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction process, and particularly relates to a test device for measuring the fluidity and adhesion of mortar. Background Art

[0002] In the process of testing the fresh mortar performance, a large amount of human resources are usually required because the test procedures involved are relatively complex and need to be completed in a very short time. However, this traditional method that relies on manual operation has a significant problem, that is, the human factors in the operation process may cause significant errors in the final test results. These errors not only affect the accuracy of the data, but also reduce the reliability of the test results.

[0003] The V-funnel can be used to measure the dynamic fluidity of mortar. The specific operating steps are specified in "T0534-2020 Cement Concrete Mixture V-Funnel Test Method": "The V-shaped funnel is rinsed with clean water and placed on a stand so that its top surface is horizontal and the body side is vertical. The funnel should be stable. Wipe the inner surface of the funnel with a damp cloth to keep it moist. Place a receiving container for the concrete mixture below the funnel outlet. Before filling the concrete mixture sample into the funnel, confirm whether the bottom cover of the funnel outlet is closed. Use a concrete feeding container to hold the concrete mixture sample, and fill it into the funnel steadily from the upper end of the funnel until it overflows (the concrete mixture sample is about 10 L). Use a scraper to scrape the top surface of the concrete mixture along the upper end of the funnel. After the top surface of the concrete mixture is scraped flat, let it stand for 10s±2s, then quickly open the bottom cover of the funnel outlet, and use a stopwatch to record the time from the moment the cover is opened to the time when the concrete mixture in the funnel is completely emptied. The moment when light is observed from the top of the funnel is the concrete emptying time. At the same time, observe and record whether the concrete mixture has blockage and other conditions. It is advisable to test the sample twice within 5 minutes, and the arithmetic mean of the two test results should be used as the test result, and the result should be accurate to 0.1s. In addition to the emptying time, the flow condition of the concrete mixture should also record the flow condition during the flow process, such as whether there is blockage. "

[0004] Specifically, the flow rate of the mortar is determined by calculating the ratio of the volume of the funnel to the time required for the mortar to flow out. In the current method, a stopwatch is usually used to record the time. The specific operation is that the observer opens the bottom cover of the funnel and looks down from the top of the funnel to record the time when the light shining from the discharge port from bottom to top is first seen. This method is greatly affected by the operator's reaction speed and observation accuracy, so the error caused by human intervention is relatively large.

[0005] In addition, the adhesion of the mortar can be evaluated by inserting a stone stick into the mortar, holding it for a period of time, and then pulling it out to see how much mortar adheres to the stone stick. However, different testers often have different speeds when inserting and pulling out the stone stick, and even the same operator may have different operations at different times. This inconsistency in operation will undoubtedly have a significant impact on the measurement results and accuracy of adhesion. Utility Model Content

[0006] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a test device for measuring the fluidity and adhesion of mortar, which can reduce the test errors caused by human factors and improve the accuracy of the test.

[0007] A test device for measuring the fluidity and adhesion of mortar, comprising a bracket, a lifting platform device, a general controller, a container, a weighing machine, a fluidity test device, and an adhesion test device; the fluidity test device comprises a V-shaped funnel and a light receiver, the upper part of the V-shaped funnel is a material inlet and is provided with a material inlet cover, the lower part is a material outlet and is provided with a material outlet cover, the light receiver is installed on the material inlet cover and is inside the V-shaped funnel; the adhesion test device comprises a mounting plate, a stone rod, and a laser device, one end of the stone rod is bonded to the mounting plate, and the laser device is installed on the edge of the mounting plate.

[0008] The bracket and the lifting platform device are installed on the bottom plate; the fluidity test device or the adhesion test device is placed on the lifting platform device; the weighing device is placed on the bottom plate, and the container is placed on the weighing device and is located directly below the fluidity test device or the adhesion test device.

[0009] The container is used to receive the mortar flowing out of the V-funnel test and is used as one of the test tools for the stone bar adhesion test. The weighing device is used to weigh the mass change of the mortar.

[0010] Preferably, the lifting platform device includes a spiral rod, a connecting plate and a lifting platform; one side of the connecting plate is welded to the four sides of the lifting platform, and the other side is connected to the spiral rod through an extension nut.

[0011] Preferably, the bottom end of the spiral rod passes through the bottom plate and is connected to the motor, and the spiral rod is driven by the motor to rotate and move to control the lifting and lowering of the platform.

[0012] Preferably, a limiting hole is provided on the lifting platform to match the mounting plate and is used to fix the adhesion test device.

[0013] Preferably, a buckle and a plug plate are also provided at the discharge port below the V-shaped funnel for fixing the discharge cover.

[0014] Preferably, a sensing device is also provided at the discharge port below the V-shaped funnel and is connected to the main controller, for receiving a signal sent by the main controller to open the discharge cover to start the test and start timing.

[0015] Preferably, the adhesion test device includes a plurality of stone rods, one end of which is bonded to the mounting plate. To simulate the actual situation of whether the mortar can adhere well to the stone, the stone rods should be made of marble and other commonly used building stones, with a rough surface without any unevenness.

[0016] Preferably, the laser device comprises a laser emitter and a laser receiver, and the laser emitter and the laser receiver are respectively mounted at opposite ends of the mounting plate to ensure that the emitted laser is not blocked by the stone rod.

[0017] Preferably, the material of the mounting plate is selected from any one of acrylic, metal and wood.

[0018] Preferably, the master controller is composed of a display screen, a housing and circuits, including a lifting control button, a timer button and a display interface. Related electronic equipment is connected to the master controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a test device for measuring the fluidity and adhesion of mortar provided by an embodiment of the utility model;

[0020] Figure 2 It is a schematic structural diagram of a buckle of a test device for measuring the fluidity and adhesion of mortar provided by an embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the connection between the spiral rod and the lifting platform of a test device for measuring the fluidity and adhesion of mortar provided by an embodiment of the utility model;

[0022] Figure 4 It is a partial enlarged view of the connection between the spiral rod and the connecting plate of a test device for measuring the fluidity and adhesion of mortar provided by an embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure inside the bottom plate of a test device for measuring the fluidity and adhesion of mortar provided in an embodiment of the utility model.

[0024] In the figure: 1. main controller; 2. limit hole; 3. lifting platform device; 3-1. connecting plate; 3-2. extension nut; 4. container; 5. bracket bottom plate; 5-1. motor; 6. weighing machine; 7. V-shaped funnel; 8. light receiver; 9. buckle; 9-1. plug plate; 9-2. discharge cover; 10. stone stick; 11. laser device; 12. screw rod; 13. mounting plate; 14. feed cover; 15. bracket. DETAILED DESCRIPTION

[0025] The following is a detailed description of the embodiments of the present invention. The following embodiments are implemented on the premise of the technical solution of the present invention, and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to the following embodiments.

[0026] When conducting a fluidity test, you need to first fill the V-shaped funnel with mortar, then open the bottom cover of the discharge port, and use the time when you first see light shining from the discharge port from bottom to top as the standard. However, this requires reaction time, which will cause a certain error in the test results.

[0027] In the adhesion test, a stone stick is inserted into the slurry at a certain depth for a period of time and then pulled out to evaluate the adhesion of the stone stick. However, since different testers have different insertion and pulling out speeds, even for the same person, the method will be different each time. This greatly affects the measurement results and accuracy.

[0028] To this end, an embodiment of the utility model provides a test device for measuring the fluidity and adhesion of mortar.

[0029] like Figure 1 As shown, the test device of the utility model includes a bracket 15, a lifting platform device 3, a main controller 1, a container 4, a weighing device 6, a fluidity test device, and an adhesion test device; the fluidity test device includes a V-shaped funnel 7 and a light receiver 8. The upper part of the V-shaped funnel 7 is a feed port and is provided with a feed cover 14, and the lower part is a discharge port and is provided with a buckle 9, a plug plate 9-1 and a discharge cover 9-2. The light receiver is installed on the feed cover 14 and inside the V-shaped funnel 7. The discharge port below the V-shaped funnel 7 is also provided with a sensing device connected to the main controller 1 for receiving the light emitted by the main controller 1. The signal sent opens the discharge cover 9-2 to start the test and start timing; the adhesion test device includes an acrylic plate 13, a stone rod 10, and a laser device 11; the adhesion test device includes 6 stone rods 10. In order to simulate the actual situation of whether the mortar can adhere well to the stone, the stone rods 10 are made of marble and other commonly used building stones. The surface is smooth and slightly rough. One end of the stone rod 10 is bonded to the mounting plate 13; the laser device 11 includes a laser emitter and a laser receiver, which are respectively installed at the opposite ends of the mounting plate 13, and ensure that the emitted laser is not blocked by the stone rods 10 and can be successfully received.

[0030] The bracket 15 and the lifting platform device 3 are installed on the base plate 5; the fluidity test device or the adhesion test device is placed on the lifting platform device 3; the weighing device is placed on the base plate 5, and the container 4 is placed on the weighing device 6 and is located directly below the fluidity test device or the adhesion test device.

[0031] The lifting platform device 3 includes four screw rods 12; the bottom ends of the screw rods 12 pass through the base plate 5 and are connected to the motor 5-1, and the motor 5-1 drives the screw rods 12 to rotate and move to control the lifting of the platform; a limiting hole 2 is set on the lifting platform for fixing the adhesion test device.

[0032] The lifting platform device 3 also includes four connecting plates 3-1, one side of the connecting plate 3-1 is welded to the four sides of the lifting platform, and the other side is connected to the spiral rod 12 through the extension nut 3-2.

[0033] The main controller 1 is composed of a display screen, a shell and a circuit, including a lifting control button, a timer button and a display interface, and related electronic equipment is connected to the main controller. The sensing device, the light receiver, the laser transmitter, the laser receiver and the motor are connected to the main controller through the circuit socket to achieve the overall control function.

[0034] refer to Figure 1 As shown, the process of using the test device for measuring mortar fluidity and adhesion is as follows:

[0035] Flowability test

[0036] Use the buckle to fit the V-shaped funnel outlet to the discharge cover.

[0037] Pour the mixed mortar into the V-shaped funnel from the inlet. When the inner wall of the V-shaped funnel is filled with mortar, wipe off the residual mortar on the surface.

[0038] Close the feed cover to keep the light receiver airtight.

[0039] By pressing the timer button of the main controller, the timer starts timing, and at the same time the discharge cover is loosened, and the mortar flows out from the discharge port of the V-shaped funnel, and the outflowing mortar is received by the receiving tube placed below.

[0040] At first, the mortar fills the discharge port. As the mortar continues to flow out from the lower opening of the V-shaped funnel, the mortar is not enough to completely fill the lower opening, and light begins to penetrate the inner side of the V-shaped funnel from bottom to top. After the light receiver receives the light, it will cause the timer switch to switch from the closed state to the open state, and the timer will stop timing. Obviously, this is more accurate than manual operation and can effectively reduce errors.

[0041] The ratio of the V-funnel volume to the time value is calculated and its value is taken as the final flow rate.

[0042] Adhesion test

[0043] The weight of the mortar and the holding tube is determined by a scale.

[0044] Remove the V-shaped funnel, fix the mounting plate with the stone rod through the limiting holes, and install the adhesion test device.

[0045] The stone rod is inserted into the mortar at a certain set rate by operating the lifting button. When the laser transmitter and the laser receiver cannot receive each other's signals after entering the mortar, the lifting stops immediately, that is, the preset height is reached. At this time, the timer starts, and after reaching the set insertion time, it is pulled out to the specified height at the same rate, and then left to stand for the set time.

[0046] The amount of mortar adhering to the stone rod can be obtained by comparing the mass difference of the mortar in the containing tube before and after the weighing value.

[0047] The adhesion index is calculated from the ratio of the amount of mortar adhering to the stone rod to the surface area of ​​the stone rod entering the mortar.

[0048] Clean relevant instruments for use by subsequent experimental groups.

[0049] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A test device for measuring the fluidity and adhesion of mortar, characterized in that: It includes a bracket, a lifting platform device, a master controller, a container, a weighing machine, a fluidity test device, and an adhesion test device; the fluidity test device includes a V-shaped funnel and a light receiver, the upper part of the V-shaped funnel is a feed port and is provided with a feed cover, the lower part is a discharge port and is provided with a discharge cover, the light receiver is installed on the feed cover and inside the V-shaped funnel; the adhesion test device includes a mounting plate, a stone rod, and a laser device, one end of the stone rod is bonded to the mounting plate, and the laser device is installed on the edge of the mounting plate; The bracket and the lifting platform device are installed on a base plate; the fluidity test device or the adhesion test device is placed on the lifting platform device; the weighing device is placed on the base plate, and the container is placed on the weighing device and is located directly below the fluidity test device or the adhesion test device.

2. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: The lifting platform device comprises a spiral rod, a connecting plate and a lifting platform; one side of the connecting plate is welded to the periphery of the lifting platform, and the other side is connected to the spiral rod through an extension nut.

3. A test device for measuring mortar fluidity and adhesion according to claim 2, characterized in that: The bottom end of the spiral rod passes through the bottom plate and is connected with the motor.

4. A test device for measuring mortar fluidity and adhesion according to claim 2, characterized in that: The lifting platform is provided with a limiting hole matched with the mounting plate and used for fixing the adhesion test device.

5. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: A buckle and a plug plate are also provided at the discharge port below the V-shaped funnel for fixing the discharge cover.

6. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: A sensing device is also provided at the discharge port below the V-shaped funnel and is connected to the main controller, and is used to receive a signal sent by the main controller to open the discharge cover to start the test and start timing.

7. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: The adhesion test device comprises a plurality of stone rods, one end of each of which is bonded to a mounting plate.

8. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: The laser device comprises a laser emitter and a laser receiver, and the laser emitter and the laser receiver are respectively installed at two opposite ends of the mounting plate, and ensure that the emitted laser is not blocked by the stone rod.

9. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: The material of the mounting plate is selected from any one of acrylic, metal, and wood.

10. A test device for measuring mortar fluidity and adhesion according to claim 1, characterized in that: The master controller is composed of a display screen, a housing and circuits, including lifting and lowering control buttons, a timer button and a display interface.

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