Saline-alkaline corrosion resistance testing device for road base material

Abstract

The utility model provides a saline-alkaline corrosion resistance testing device for a road base material, and relates to the technical field of coal ash material testing. Mutually symmetrical rectangular grooves are formed in the bottom of the test box; a stabilizing groove is formed in the bottom of an inner cavity of the testing box. Saline-alkali liquid in a saline-alkali pipeline is used for carrying out corrosion test on a blocky fly ash material in a test box, the erosion effect of a saline-alkali environment in an actual road environment on the material is simulated so as to evaluate the corrosion resistance of the material, then a test head is used for carrying out pressing test on the fly ash material below, and the hardness and compressive strength of the fly ash material are measured. It is ensured that the material has enough mechanical stability when bearing vehicle loads and base layer pressure, and the problems that the coal ash material needs to be tested when being laid on a road base layer, and the hardness of a blocky coal ash material subjected to a salt and alkali test needs to be tested again, so that the cost is low are solved. Otherwise, the coal ash material cannot be directly paved on the road base.

Description

Technical Field

[0001] This utility model relates to the field of fly ash material testing technology, and in particular to a test device for the salt and alkali corrosion resistance of road base materials. Background Technology

[0002] Fly ash, a major solid waste discharged from coal-fired power plants, faces significant challenges in environmental protection and resource utilization due to its large-scale production and low utilization rate. In road engineering, fly ash is widely used in base course materials to improve material performance and reduce costs. However, highways in saline soil areas are prone to longitudinal cracks, instability, and uneven settlement, with salt corrosion being a major contributing factor. Therefore, testing the salt and alkali corrosion resistance of fly ash base course materials is crucial, as it directly impacts road service life and safety. Thus, evaluating their salt and alkali corrosion resistance through scientific testing methods is essential for guiding material design and construction.

[0003] During the use of the testing device, since the fly ash material is laid on the road base, it is necessary to test the fly ash material. After the salt and alkali test, the hardness of the fly ash material needs to be tested again. Otherwise, the fly ash material cannot be directly laid on the road base. Utility Model Content

[0004] This utility model relates to a salt and alkali corrosion resistance testing device for road base materials. The salt and alkali liquid in the salt and alkali pipe conducts a corrosion test on the blocky fly ash material in the test box, simulating the erosive effect of the salt and alkali environment on the material in the actual road environment, so as to evaluate its corrosion resistance performance. Subsequently, the test head conducts a pressure test on the fly ash material below to determine its hardness and compressive strength, ensuring that the material has sufficient mechanical stability when subjected to vehicle loads and base pressure. This comprehensive testing method can fully verify the durability and structural strength of fly ash material in a salt and alkali environment, providing a scientific basis for its application in road base paving.

[0005] In a first aspect, this utility model provides a testing device for the salt and alkali corrosion resistance of road base materials, specifically comprising: a test chamber; a bottom of the test chamber having mutually symmetrical rectangular grooves; a stabilizing groove being formed at the bottom of the inner cavity of the test chamber; a sealing groove being formed at the front end of the bottom of the test chamber; and a slot being formed at the rear end of the upper end of the test chamber, wherein two threaded grooves are formed at the slot of the test chamber.

[0006] A support plate is fixedly installed at the slot of the test box, and two round holes are opened at the rear end of the support plate; four threaded grooves are opened at the top end of the support plate; a through round hole is opened at the front end of the support plate; symmetrical support plates are fixedly installed at the bottom of the support plate; a display screen is installed at the top end of the support plate; symmetrical side plates are fixedly installed at the bottom end of the display screen, and two through bolts are inserted into the side plates; through fasteners are respectively inserted into the two round holes at the rear end of the support plate.

[0007] The front end of the support plate has four through guide holes, and a through hydraulic cylinder is fixedly inserted into the round hole of the support plate. A connecting plate is fixedly installed at the lower end of the hydraulic cylinder. A slot is opened at the bottom of the connecting plate. Four vertically upward guide rods are fixedly installed at the upper end of the connecting plate. Two sensors are installed at the bottom of the connecting plate. A test head is fixedly installed at the slot at the bottom of the connecting plate.

[0008] Furthermore, a through-hole salt and alkali pipe is installed at the left end of the test box, and a garbage box is placed on the front side of the outer end of the test box.

[0009] Furthermore, a test box is inserted into the stabilizing groove at the bottom of the test box, and handles are fixedly installed on both sides of the test box. An arc-shaped groove is opened at the upper left end of the test box, and fly ash material is placed in the inner cavity of the test box.

[0010] Furthermore, the front end of the inner sidewall of the test chamber is provided with mutually symmetrical sliding grooves, and a closed baffle is slidably installed at the front end of the test chamber, while two handles are fixedly installed at the upper end of the closed baffle.

[0011] Furthermore, a sealing strip is fixedly installed at the bottom of the closed baffle, and sliding strips are fixedly installed on both sides of the closed baffle.

[0012] This utility model provides a testing device for the salt and alkali corrosion resistance of road base materials, which has the following beneficial effects:

[0013] In this invention, the testing device uses a saline-alkali liquid in a saline-alkali pipeline to conduct a corrosion test on the blocky fly ash material in the test box, simulating the erosive effect of a saline-alkali environment on the material in a real road environment to evaluate its corrosion resistance. Subsequently, the test head performs a pressure test on the fly ash material below to determine its hardness and compressive strength, ensuring that the material has sufficient mechanical stability when subjected to vehicle loads and base pressure. This comprehensive testing method can fully verify the durability and structural strength of fly ash material in a saline-alkali environment, providing a scientific basis for its application in road base paving.

[0014] By using a hydraulic cylinder to move the connecting plate and test head downwards, the test head applies pressure to the fly ash material below. During the test, the sensor displays the test data on the screen, collecting data such as pressure in real time to directly quantify parameters such as the hardness and compressive strength of the fly ash, avoiding human judgment errors. This allows for the testing of the hardness of the fly ash material. The hydraulic cylinder provides a stable and adjustable loading rate (e.g., 0.5–10 mm / min) to ensure consistent testing conditions suitable for different standards. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] In the attached diagram:

[0017] Figure 1 A schematic diagram of the left front upper axis view structure of this application is shown;

[0018] Figure 2 A schematic diagram of the disassembled structure of the test box and carrier plate of this application is shown;

[0019] Figure 3 A schematic diagram of the disassembled structure of the hydraulic cylinder part of this application is shown;

[0020] Figure 4 A schematic diagram of the exploded structure of this application is shown.

[0021] List of reference numerals

[0022] 1. Test box; 101. Salt-alkali pipe; 102. Garbage box; 103. Test box; 104. Fly ash material; 105. Slide chute; 106. Enclosed baffle; 107. Sealing strip; 108. Slide bar; 2. Bearing plate; 201. Support plate; 202. Display screen; 203. Side plate; 204. Fastener; 205. Guide hole; 3. Hydraulic cylinder; 301. Connecting plate; 302. Guide rod; 303. Sensor; 304. Test head. Detailed Implementation

[0023] 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.

[0024] Example 1: Please refer to Figures 1 to 4 :

[0025] This utility model proposes a testing device for the salt and alkali corrosion resistance of road base materials, comprising: a test chamber 1; a symmetrical rectangular groove is formed at the bottom of the test chamber 1; a stabilizing groove is formed at the bottom of the inner cavity of the test chamber 1; a sealing groove is formed at the front end of the bottom of the test chamber 1; a slot is formed at the rear end of the upper end of the test chamber 1, and two threaded grooves are formed at the slot of the test chamber 1; a support plate 2 is fixedly installed at the slot of the test chamber 1, and two round holes are formed at the rear end of the support plate 2; a fastener 204 passes through the round holes at the rear end of the support plate 2 and is inserted into the threaded grooves of the slot of the test chamber 1; four threaded grooves are formed at the top end of the support plate 2; a through round hole is formed at the front end of the support plate 2; a through hydraulic cylinder 3 is fixedly installed at the round hole of the support plate 2, and a connecting plate 301 is fixedly installed at the lower end of the hydraulic cylinder 3; a slot is formed at the bottom of the connecting plate 301; the connecting plate 301... Four vertically upward guide rods 302 are fixedly installed at the upper end of the connecting plate 301. The guide rods 302 slide through the guide holes 205. When the connecting plate 301 slides up and down, the guide rods 302 are restricted by the guide holes 205, and the connecting plate 301 can only slide up and down to prevent the connecting plate 301 from tilting when sliding up and down. The test head 304 will also tilt and cannot stably test the fly ash material 104. Two sensors 303 are installed at the bottom of the connecting plate 301. The test head 304 is fixedly installed at the slot at the bottom of the connecting plate 301. The hydraulic cylinder 3 moves the connecting plate 301 and the test head 304 downward. The test head 304 presses down on the fly ash material 104 below. During the test, the sensors 303 will display the test data on the display screen 202 to test the hardness of the fly ash material 104.

[0026] The test chamber 1 has a through-hole salt-alkali pipe 101 installed at its left end. The salt-alkali liquid in the pipe 101 flows into the test box 103 from its right end, conducting corrosion tests on the rectangular block-shaped fly ash material 104 in the test box 103. Simultaneously, the sensor 303 continuously monitors key data during the corrosion process, capturing transient changes and displaying them on the display screen 202. A waste box 102 is placed on the front side of the outer end of the test chamber 1. During the test, some slag or waste from the fly ash material 104 in the test chamber 1 may fall into it. By grasping the handle on the sealing baffle 106 and moving it upwards, the sealing baffle 106 can be removed from the test chamber 1. Then, the bottom of the test chamber 1 can be cleaned with a brush and the waste can be placed into the waste box 102. The test box 103 is installed in the stabilizing groove at the bottom of the test chamber 1, and handles are fixedly installed on both sides of the test box 103 for easy movement. For movement or cleaning, an arc-shaped groove is provided at the upper left end of the test box 103. Fly ash material 104 is placed in the inner cavity of the test box 103. The fly ash material 104 is formed into a rectangular block structure by pressing. Symmetrical sliding grooves 105 are provided at the front end of the inner side wall of the test box 1. A closing baffle 106 is slidably installed at the front end of the test box 1. Two handles are fixedly installed at the upper end of the closing baffle 106. A sealing strip 107 is fixedly installed at the bottom of the closing baffle 106. The sealing strip 107 is inserted into the sealing groove at the bottom of the test box 1. The front end of the test box 1 is closed by the closing baffle 106. Sliding strips 108 are fixedly installed on both sides of the closing baffle 106. The sliding strips 108 are slidably installed in the sliding grooves 105. When the closing baffle 106 slides up and down, the sliding strips 108 are restricted by the sliding grooves 105. The closing baffle 106 can only slide up and down to prevent the closing baffle 106 from tilting when sliding up and down.

[0027] The support plate 2 has two symmetrical support plates 201 fixedly installed at its bottom. The lower ends of the two support plates 201 are respectively fixedly inserted into two rectangular slots at the bottom of the test chamber 1. The two support plates 201 provide stable support for the support plate 2 and prevent it from tilting due to contact. A display screen 202 is installed at the top of the support plate 2. The sensor 303 can collect key parameters such as temperature, pressure, and humidity of the fly ash in real time and display them intuitively on the display screen 202 to help operators quickly grasp the test status. The display screen 202 provides clear and accurate values ​​or The charts ensure accurate analysis of key parameters (such as fly ash activity index). Symmetrical side plates 203 are fixedly installed at the lower end of the display screen 202. Two through bolts are inserted on the side plates 203. The bolts on the side plates 203 are rotated and inserted into the threaded grooves of the support plate 2 to fix and restrict the side plates 203 and the display screen 202. The display screen 202 will not move when touched. Two through fasteners 204 are inserted into the two round holes at the rear end of the support plate 2. Four through guide holes 205 are opened at the front end of the support plate 2.

[0028] Example 2, based on Example 1, such as Figure 1 and Figure 4 As shown, the lower end of the display screen 202 is fixedly equipped with symmetrical side plates 203, and two through bolts are inserted on the side plates 203. After removing the side plates 203 and the bolts, the bottom of the display screen 202 is fixedly glued to the support plate 2 to stabilize and restrict the display screen 202. In this way, the display screen 202 will not tilt when touched, avoiding the bolts from loosening and failing to stabilize the display screen 202 after long-term use, and also saving on component costs.

[0029] The working principle of this embodiment is as follows: During use, the saline-alkali liquid in the saline-alkali pipeline 101 flows into the test box 103 from the right end, performing a corrosion test on the rectangular block-shaped fly ash material 104 in the test box 103. Simultaneously, the sensor 303 continuously monitors key data during the corrosion process, capturing transient changes and displaying them on the display screen 202. Then, the hydraulic cylinder 3 moves the connecting plate 301 and the test head 304 downwards, using the test head 304 to perform a downward pressure test on the fly ash material 104 below. During the test, the sensor 303 displays the test data on the display screen 202, thereby assessing the corrosion performance of the fly ash material. The hardness of fly ash material 104 is tested. Sensor 303 can collect key parameters such as temperature, pressure and humidity of fly ash in real time and display them intuitively on display screen 202 to help operators quickly grasp the test status. Display screen 202 provides clear and accurate values ​​or charts to ensure accurate analysis of key parameters (such as fly ash activity index). After the test, some slag or garbage will fall into test chamber 1. Grab the handle on the closed baffle 106 and move it upward to remove the closed baffle 106 from the test chamber 1. Then use a brush to clean the bottom of test chamber 1.

[0030] The following points should be noted in this article:

[0031] 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0032] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0033] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A testing device for the salt and alkali corrosion resistance of road base materials, comprising: Test box (1); the bottom of the test box (1) is provided with mutually symmetrical rectangular grooves; the bottom of the inner cavity of the test box (1) is provided with a stabilizing groove; the front end of the bottom of the test box (1) is provided with a sealing groove; the rear end of the upper end of the test box (1) is provided with a slot, and the slot of the test box (1) is provided with two threaded grooves; a support plate (2) is fixedly installed at the slot of the test box (1), and the rear end of the support plate (2) is provided with two round holes; the top end of the support plate (2) is provided with four threaded grooves; the support plate (2) The front end is provided with a through circular hole; characterized in that a through hydraulic cylinder (3) is fixedly installed in the circular hole of the bearing plate (2), and a connecting plate (301) is fixedly installed at the lower end of the hydraulic cylinder (3); a slot is provided at the bottom of the connecting plate (301); four vertically upward guide rods (302) are fixedly installed at the upper end of the connecting plate (301); two sensors (303) are installed at the bottom of the connecting plate (301); a test head (304) is fixedly installed at the slot at the bottom of the connecting plate (301).

2. The salt and alkali corrosion resistance testing device for road base materials according to claim 1, characterized in that: A through-hole salt and alkali pipe (101) is inserted into the left end of the test box (1), and a garbage box (102) is placed on the front side of the outer end of the test box (1).

3. The salt and alkali corrosion resistance testing device for road base materials according to claim 1, characterized in that: A test box (103) is inserted into the stabilizing groove at the bottom of the test box (1), and handles are fixedly installed on both sides of the test box (103). An arc-shaped groove is opened at the left end of the upper part of the test box (103), and fly ash material (104) is placed in the inner cavity of the test box (103).

4. The salt and alkali corrosion resistance testing device for road base materials according to claim 1, characterized in that: The front end of the inner wall of the test box (1) is provided with mutually symmetrical sliding grooves (105), and a closed baffle (106) is slidably installed on the front end of the test box (1), and two handles are fixedly installed on the upper end of the closed baffle (106).

5. The salt and alkali corrosion resistance testing device for road base materials according to claim 4, characterized in that: A sealing strip (107) is fixedly installed at the bottom of the closed baffle (106), and sliding strips (108) are fixedly installed on both sides of the closed baffle (106).

6. The salt and alkali corrosion resistance testing device for road base materials according to claim 1, characterized in that: The bottom of the bearing plate (2) is fixedly installed with mutually symmetrical support plates (201), and the top of the bearing plate (2) is installed with a display screen (202).

7. The salt and alkali corrosion resistance testing device for road base materials according to claim 6, characterized in that: The lower end of the display screen (202) is fixedly equipped with symmetrical side plates (203), and two through bolts are inserted on the side plates (203). Two through fasteners (204) are respectively inserted into the two round holes at the rear end of the support plate (2). Four through guide holes (205) are opened at the front end of the support plate (2).

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