Road and bridge maintenance material performance testing device

Abstract

The utility model provides a road bridge maintenance material performance testing device, which relates to the technical field of road maintenance and comprises a sealed experiment box, an opening is arranged in the front of the sealed experiment box, an observation window is hinged to the opening in the front of the sealed experiment box, and a high-temperature baking lamp is fixedly connected to the top inside the observation window through screws. The inner bottom of the sealed experiment box is fixedly connected with a test board, a high-temperature baking lamp simulates the sunshine roasting condition in the actual road environment, the seam pasting belt for testing and the simulation ground test block for simulating the road surface are roasted and heated at the same time, then the actual use environment of the seam pasting belt in the road is simulated, the test environment is closer to the reality, and the test efficiency is improved. The problem that the tensile strength of the seam attaching belt is detected by a common test mode of a pulling test, but the test mode cannot simulate the tensile property of the seam attaching belt after the seam attaching belt is grilled and heated by sunlight in practical application, and the tensile property of the seam attaching belt is greatly different from the tensile property of the seam attaching belt in practical application is solved.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance technology, and in particular to a test device for the performance of road and bridge maintenance materials. Background Technology

[0002] After long-term use and bearing load, road and bridge pavements often develop surface cracks. If these cracks are not repaired in time, they will gradually widen under the influence of continuous traffic loads and natural environmental factors (such as rainwater erosion and temperature changes). This will not only further weaken the structural strength of the pavement but may also lead to deeper damage. Therefore, relevant personnel need to conduct regular inspections and maintenance of road and bridge pavements and repair surface cracks in a timely manner. Among common crack repair work, crack sealing tape is the most widely used. It is made of modified asphalt and does not require heating or the use of machinery. It can be applied simply by cleaning the cracks. The construction process is simple and efficient. At the same time, the material itself has strong adhesion and can bond tightly to the pavement. It is also resistant to high and low temperatures, and the technology is mature and reliable. Its long-term performance is stable and will not damage the pavement structure.

[0003] During the research and development and production of crack sealing tape, product quality needs to be tested. Product quality is affected by different production processes, storage time, production batches and raw materials, resulting in inconsistent quality. This includes properties such as high temperature resistance, tensile strength and adhesive strength. Crack sealing tapes of different qualities have significantly different repair effects on road cracks.

[0004] The common testing method for grout tape is the tensile test to detect its tensile strength. However, this test method cannot simulate the tensile performance of grout tape after it has been exposed to sunlight and heated up in actual use, and there will be a significant difference between the tensile performance and that under actual use. Utility Model Content

[0005] This disclosure relates to a performance testing device for road and bridge maintenance materials, which addresses the common problem that the tensile test is used to detect the tensile strength of joint sealing tape. However, this test method cannot simulate the tensile performance of joint sealing tape after it has been exposed to sunlight and heated in actual use, resulting in a significant difference between the tensile performance and that in actual use.

[0006] In a first aspect, this disclosure provides a performance testing device for road and bridge maintenance materials, specifically comprising: a sealed test box, wherein the sealed test box has an opening at the front, an observation window is hinged to the opening at the front, a high-temperature heating lamp is fixedly connected to the top of the observation window by screws, a test platform is fixedly connected to the bottom of the sealed test box, a test block placement rack is fixedly connected to the upper left side of the test platform, a test block placement rack is slidably connected to the upper right side of the test platform, a simulated ground test block is placed in the test block placement rack, a transverse tie rod is fixedly connected to the right end of the test block placement rack on the right side, a longitudinal tie rod is slidably connected through the upper wall of the sealed test box, a pull block connecting plate is fixedly connected to the lower end of the longitudinal tie rod, a lifting test pull block is slidably connected to the pull block connecting plate, and a tensile test gauge is connected to the upper end of the longitudinal tie rod.

[0007] In at least some embodiments, two parallel guide rods are fixedly connected to the right side of the upper surface of the test platform, and two placement rack sliders are fixedly connected to the lower surface of the test block placement rack located on the right side, with the placement rack sliders slidably connected to the parallel guide rods.

[0008] In at least some embodiments, the opening of the test block placement rack faces upward, and the upper edges of the front and rear walls of the test block placement rack are fixedly connected to the rack side plates, which have side plate slots.

[0009] In at least some embodiments, a limiting plug is slidably connected inside the side plate socket, and a test block retrieval opening with a semi-circular groove structure is provided on the upper edge of the front and rear walls of the test block placement rack.

[0010] In at least some embodiments, the simulated ground test block is a cuboid test block made of a mixture of asphalt, gravel, and sand.

[0011] In at least some embodiments, the cross-section of the pull block connecting plate is a "T" shaped structure.

[0012] In at least some embodiments, the upper surface of the pull test block is provided with a groove with a "T" shaped cross section, and the "T" shaped groove of the pull test block is slidably connected to the block connecting plate.

[0013] This utility model provides a testing device for the performance of road and bridge maintenance materials, which has the following beneficial effects:

[0014] The road and bridge maintenance material performance testing device of this utility model is used to test the performance of road surface crack sealing tape. It uses a high-temperature heating lamp to simulate the sun-baking conditions in the actual road environment, so that the test sealing tape and the simulated ground test block simulating the road surface are heated at the same time, thereby simulating the actual use environment of the sealing tape in the road and making the test environment closer to reality. After the sealing tape is heated, the test hook of the tensile test gauge is connected to the horizontal tie rod and a rightward pull force is applied. The right side test block placement frame is pulled to the right, and the tensile strength of the sealing tape can be detected by observing the tensile strength value displayed on the tensile test gauge when the sealing tape breaks.

[0015] In addition, the adhesive strength can be tested by using the longitudinal tie rod, the pull block connecting plate, and the lifting test block. The joint tape is attached to the top of the simulated ground test block on the left. The lifting test block is then bonded to the upper surface of the joint tape with glue. A tensile test gauge is connected to the upper end of the longitudinal tie rod and a pulling force is applied. The reading of the tensile test gauge at the moment the joint tape separates from the simulated ground test block can be observed to measure the adhesive strength of the joint tape. This device has the function of testing the adhesive strength of joint tape.

[0016] In addition, the simulated ground test block is installed in the test block placement rack and is limited by the limiting block to assist in positioning the simulated ground test block. The simulated ground test block is easy to install, disassemble, clean or replace; the lifting test block is slidably connected to the block connecting plate. The lifting test block is a disposable product and can be discarded directly after a single use without cleaning the residual adhesive on its surface, which improves experimental efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the present invention.

[0019] In the attached diagram:

[0020] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0021] Figure 2 A schematic diagram of the internal structure of this application is shown;

[0022] Figure 3 A schematic diagram of the structure of the high-temperature baking lamp of this application is shown;

[0023] Figure 4 This diagram shows the structure of the test block placement rack in the present application separated from the simulated ground test block;

[0024] Figure 5A schematic diagram of the test block placement rack of this application is shown;

[0025] Figure 6 A schematic diagram of the structure of the pull block connecting plate of this application is shown.

[0026] List of reference numerals

[0027] 1. Sealed experimental box; 2. Observation window; 3. High-temperature baking lamp; 4. Test platform; 401. Parallel guide rod; 5. Test block placement rack; 501. Side plate of placement rack; 502. Side plate socket; 503. Limiting block; 504. Test block retrieval port; 505. Placement rack slider; 6. Simulated ground test block; 7. Horizontal tie rod; 8. Longitudinal tie rod; 9. Pull block connecting plate; 10. Pull test block; 11. Tensile test gauge. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Example 1: Please refer to Figures 1 to 6 :

[0030] This utility model proposes a performance testing device for road and bridge maintenance materials, comprising: a sealed test box 1, with an opening at the front of the sealed test box 1, an observation window 2 hinged to the opening at the front of the sealed test box 1, a high-temperature heating lamp 3 fixedly connected to the top of the observation window 2 by screws, a test platform 4 fixedly connected to the bottom of the sealed test box 1, a test block placement rack 5 fixedly connected to the upper left side of the test platform 4, a test block placement rack 5 slidably connected to the upper right side of the test platform 4, a simulated ground test block 6 placed inside the test block placement rack 5, a transverse tie rod 7 fixedly connected to the right end of the test block placement rack 5, and a sliding through-wire on the upper wall of the sealed test box 1. A longitudinal tie rod 8 is connected, and a pull block connecting plate 9 is fixedly connected to the lower end of the longitudinal tie rod 8. A lifting test pull block 10 is slidably connected to the pull block connecting plate 9. A tensile test gauge 11 is connected to the upper end of the longitudinal tie rod 8. Two parallel guide rods 401 are fixedly connected to the right side of the upper surface of the test platform 4. Two placement rack sliders 505 are fixedly connected to the lower surface of the test block placement rack 5 on the right side. The placement rack sliders 505 are slidably connected to the parallel guide rods 401 to guide the test block placement rack 5 on the right side, allowing it to slide laterally on the test platform 4. The distance between the two test block placement racks 5 is adjusted by pulling the transverse tie rod 7 to perform a tensile test on the seam tape.

[0031] In this embodiment, the opening of the test block placement rack 5 faces upward. The front and rear walls of the test block placement rack 5 are fixedly connected to the upper edges of the rack side plates 501. The side plates 501 are provided with side plate slots 502. The side plate slots 502 are slidably connected with limiting blocks 503 inside. The front and rear walls of the test block placement rack 5 are provided with semi-circular groove structure test block retrieval openings 504. When the simulated ground test block 6 is installed in the test block placement rack 5, the limiting blocks 503 are pushed towards the center of the simulated ground test block 6, so that the limiting blocks 503 are above the simulated ground test block 6, thus longitudinally limiting the simulated ground test block 6 and preventing the simulated ground test block 6 from detaching from the test block placement rack 5. The structure of the test block retrieval opening 504 makes it easier to retrieve and place the simulated ground test block 6.

[0032] In this embodiment of the disclosure, the simulated ground test block 6 is a cuboid test block made of a mixture of asphalt, gravel, and sand; it imitates the surface of an asphalt road to reduce experimental errors.

[0033] In Example 2, based on Example 1, the cross-section of the pull block connecting plate 9 is T-shaped; the upper surface of the pull test block 10 has a T-shaped groove, and the T-shaped groove of the pull test block 10 is slidably connected to the pull block connecting plate 9; through the cooperation of the longitudinal tie rod 8, the pull block connecting plate 9, and the pull test block 10, the adhesive strength can be tested. The joint tape is pasted on the left simulated ground test block 6, and the pull test block 10 is bonded to the upper surface of the joint tape with glue, and the tensile strength is tested. Test gauge 11 is connected to the upper end of the longitudinal tie rod 8 and a pulling force is applied. The reading of the tension test gauge 11 at the moment the joint tape separates from the simulated ground test block 6 can be observed to measure the adhesive strength of the joint tape. It has the function of detecting the adhesive strength of the joint tape. The pull block connecting plate 9 is slidably connected in the groove of the lifting test pull block 10 and plays a role in fixing the lifting test pull block 10. The lifting test pull block 10 is a disposable product with a simple structure and convenient manufacturing. It can be discarded after a single use without the need to treat the residual adhesive on its surface, which improves the experimental efficiency.

[0034] The working principle of this embodiment is as follows: First, during the tensile test of the joint sealing tape, the joint sealing tape is adhered to the upper surface of two simulated ground test blocks 6. Then, the observation window 2 is closed, and the high-temperature heating lamp 3 is turned on to heat the joint sealing tape and the simulated ground test blocks 6. The pull hook of the tensile test gauge 11 is connected to the right end of the horizontal pull rod 7 and pulled to the right, applying a tensile force to the right side of the test block placement frame 5, causing the right side of the test block placement frame 5 to move to the right, applying a tensile force to the joint sealing tape. The display of the tensile test gauge 11 when the joint sealing tape breaks is observed. The tensile strength of the joint tape can be detected by measuring the tensile strength. When testing the adhesive strength of the joint tape, a suitable area of ​​the joint tape is cut and pasted on the upper surface of the test block placement frame 5 located directly below the pull block connecting plate 9. The pull test block 10 is connected to the pull block connecting plate 9, and the lower surface of the pull test block 10 is fixedly connected to the joint tape by adhesive. The tensile test gauge 11 is connected to the upper end of the longitudinal pull rod 8 and a pulling force is applied. The reading of the tensile test gauge 11 at the moment when the joint tape separates from the simulated ground test block 6 can be observed to measure the adhesive strength of the joint tape.

[0035] The following points should be noted in this article:

[0036] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0037] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0038] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A device for testing the performance of road bridge maintenance materials, comprising: The utility model provides a sealed experiment box (1), it is characterized by, the front of sealed experiment box (1) is equipped with the opening, the front opening of sealed experiment box (1) is hinged with observation window (2), the inside top of observation window (2) is fixedly connected with high temperature baking lamp (3) through screw, the inside bottom of sealed experiment box (1) is fixedly connected with test table (4), the upper left side of test table (4) is fixedly connected with test block rack (5), the upper right side of test table (4) is slidably connected with test block rack (5), simulation ground test block (6) is placed in test block rack (5), the right end of right test block rack (5) is fixedly connected with horizontal pull rod (7), the upper wall of sealed experiment box (1) is slidably connected with longitudinal pull rod (8), the lower end of longitudinal pull rod (8) is fixedly connected with pull block connecting plate (9), pull block connecting plate (9) is slidably connected with pull test pull block (10), and longitudinal pull rod (8) upper end is connected with pull test table (11).

2. The road and bridge maintenance material performance test device according to claim 1, wherein, the upper surface of the test table (4) is fixedly connected with two parallel guide rods (401) on the right side, and the lower surface of the test block rack (5) on the right side is fixedly connected with two rack sliding blocks (505); the rack sliding blocks (505) are slidably connected with the parallel guide rods (401).

3. The road and bridge maintenance material performance test device according to claim 1, wherein, the test block rack (5) is open upward, and test block rack side plates (501) are fixedly connected to the upper edges of the front wall and the rear wall of the test block rack (5); side plate sockets (502) are formed in the test block rack side plates (501).

4. The road and bridge maintenance material performance test device according to claim 3, wherein, limiting plug blocks (503) are slidably connected inside the side plate sockets (502), and test block taking openings (504) with semicircular groove structures are formed in the upper edges of the front wall and the rear wall of the test block rack (5).

5. The road and bridge maintenance material performance test device according to claim 1, wherein, the simulation ground test blocks (6) are rectangular parallelepiped test blocks made of asphalt, gravel and sand.

6. The road and bridge maintenance material performance test device according to claim 1, wherein, the pull block connecting plate (9) has a "T" shaped structure in cross section.

7. The road and bridge maintenance material performance test device according to claim 6, wherein, a groove with a "T" shaped structure is formed in the upper surface of the pull test pull block (10), and the groove with a "T" shaped structure of the pull test pull block (10) is slidably connected with the pull block connecting plate (9).

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