Concrete abrasion resistance testing device
By designing a concrete wear resistance test device, the abrasion process of the mudslide on concrete is simulated, and the problem of difficulty in accurately judging the degree of abrasion damage of mudslide in the existing technology is solved, and scientific guidance on the design of mudslide drainage structure is achieved.
Patent Information
- Application Number
- CN202421226203.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-05-31
AI Technical Summary
It is difficult for the prior art to accurately judge the degree of abrasion damage of mudslides on concrete materials such as drainage troughs or roads, which affects the optimized design of mudslide prevention and control structure.
A concrete wear resistance test device is designed, including a base, bracket, test barrel, pallet, motor and mixer. By simulating the abrasion effect of debris flow on concrete test blocks, the abrasion amount is measured and the debris flow abrasion coefficient of concrete materials is calculated.
This device can effectively simulate the abrasion process of the concrete by debris flow, accurately measure the abrasion amount, and provide scientific basis for the design of the debris flow discharge structure, improving the scientificity and accuracy of the design.
Smart Images
Figure CN222850446U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a concrete wear resistance testing device and belongs to the technical field of debris flow protection. Background Art
[0002] At present, drainage channels are one of the most widely used and effective measures in debris flow prevention and control projects. However, in the process of drainage channels guiding debris flow, the flow of debris flow causes irreversible wear and tear on the structural surface of the drainage channels.
[0003] The current research on the abrasive behavior of debris flow is not sufficient. It is difficult to accurately determine the degree of abrasive damage caused by debris flow, which is not conducive to the optimization design of debris flow prevention and control structures. Therefore, it is necessary to carry out debris flow abrasion tests to determine the debris flow abrasion coefficient of concrete materials and provide a scientific basis for the effective design of debris flow drainage structures. Utility Model Content
[0004] The utility model aims to provide a concrete abrasion resistance test device, which is intended to simulate the abrasion effect of debris flow on concrete materials such as drainage channels or roads during movement, test the abrasion amount of debris flow on concrete, and calculate the debris flow abrasion coefficient of concrete materials.
[0005] To achieve the above purpose, the utility model concrete abrasion resistance test device comprises: a base, a bracket, a test barrel, a tray, a motor and a stirrer. The base is composed of a rectangular bottom plate, two short pillars and a long pillar, and a cylindrical test barrel is placed on the rectangular bottom plate of the base; the circular tray is arranged in the center of the test barrel and fixed on the base with bolts, and is used to place concrete test blocks; one end of the bracket is connected to the base, and the other end is used to fix the motor; the stirrer is connected to the rotating shaft of the motor and is suspended in the center of the test barrel and directly above the tray; the axis of the stirrer is coaxial with the axis of the cylindrical test barrel and the circular tray.
[0006] The agitator is made of steel and consists of three square blades and four baffle blades. The three square blades of different heights cover the entire height range of the liquid to ensure uniform stirring. The four baffle blades are arc-shaped to reduce the possibility of liquid forming vortices, thereby reducing the wear caused by centrifugal action.
[0007] The motor is connected to a three-phase inverter, which can adjust the frequency and voltage of the power supply, thereby accurately controlling the speed and direction of the motor.
[0008] Among them, the circular tray can hold 3 layers of samples from the inside to the outside, and each layer can hold 6 concrete samples with different grades. The relationship between the average speeds of the debris flow from the inside to the outside is v=2v=3v, that is, the tray can realize abrasion tests of the same samples and different speeds and the same speed and different samples in one test.
[0009] Wherein, the distance between the bottom of the mixer and the concrete test block in the tray is 20 to 40 mm.
[0010] The use principle of the concrete abrasion resistance test device of the utility model is to configure debris flow samples with corresponding bulk density, viscosity and particle size ratio according to the actual situation, use the motor to provide external force, make the agitator drive the debris flow to rotate at a constant speed in the test barrel, let the debris flow be abraded in the process of contact with the concrete test block, and produce abrasion, so as to explore the abrasion capacity of concrete of different grades in different debris flows. Among them, the arc-shaped baffle blades that effectively reduce the possibility of vortex formation by centrifugal action, the three-phase inverter for accurately controlling the motor direction and speed, and the layered design of the circular tray all effectively improve the efficiency of the test and reduce the errors that may occur in the test. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.
[0012] Attached Figure 1 It is a structural schematic diagram of a mixer of a concrete abrasion resistance test device of the utility model;
[0013] Attached Figure 2 It is a structural schematic diagram of the utility model concrete abrasion resistance testing device;
[0014] Attached Figure 3 The utility model is a schematic diagram of the top view of the concrete wear resistance testing device.
[0015] 1-base, 2-bracket, 3-test barrel, 4-motor, 5-rotating shaft, 6-agitator, 7-tray, 8-square blade, 9-blocking blade, 10-three-phase inverter.
[0016] The utility model concrete abrasion resistance testing device is further described below in conjunction with the accompanying drawings and specific implementation methods. DETAILED DESCRIPTION
[0017] Attached Figure 1 This is a schematic diagram of the structure of the agitator of the utility model debris flow abrasion coefficient testing device, attached Figure 2 This is a schematic diagram of the structure of the utility model debris flow abrasion coefficient testing device, attached Figure 3It is a top view of the structure of the utility model debris flow abrasion coefficient test device, in which 1 is a base, 2 is a bracket, 3 is a test barrel, 4 is a motor, 5 is a rotating shaft, 6 is a stirrer, 7 is a tray, 8 is a square blade, 9 is a baffle blade, and 10 is a three-phase inverter. As can be seen from the figure, the utility model concrete abrasion resistance test device includes a base 1, a bracket 2, a test barrel 3, a motor 4, a stirrer 6 and a tray 7. The cylindrical test barrel 3 is placed on the base 1; the circular tray 7 is set in the center of the test barrel 3 and fixed on the base 1 with bolts. It is used to place concrete test blocks. It can hold 3 layers of test blocks from the inside to the outside. Each layer can hold 6 concrete test blocks of different grades. The average speed of the debris flow from the inside to the outside is v=2v=3v, that is, the tray can realize the abrasion test of the same test block and different speeds and the same speed and different test blocks in one test; one end of the bracket 2 is connected to the base 1, and the other end is used to fix the motor 4; the three-phase inverter 10 is connected to the motor 4, which can adjust the frequency and voltage of the power supply, so as to accurately control The speed and direction of the motor are controlled; the stirrer 6 is connected to the rotating shaft of the motor 4 and is suspended in the center of the test barrel 3 and directly above the tray 7; the stirrer 6 is made of steel and consists of three square blades 8 and four baffle blades 9. The three square blades 8 of different heights cover the entire height range of the liquid to ensure uniform stirring. The four baffle blades 9 are arc-shaped to reduce the possibility of vortex formation in the liquid, thereby reducing the wear caused by centrifugal action; the distance between the bottom of the stirrer 6 and the concrete test block in the tray 7 is 20 to 40 mm; the axis of the stirrer 6 is coaxial with the axis of the cylindrical test barrel 3 and the circular tray 7.
[0018] During the test, the silicate cement, fine aggregate and coarse aggregate required for the test were selected to make the corresponding precast concrete test blocks. All test blocks were demoulded for 1 day and moved to the standard curing room for further curing until 28 days. After the test blocks were cured, they were soaked in water for 1 day to fully absorb water to saturation. After saturation, the water stains on the surface were wiped off, the mass of the samples was recorded, the samples were placed in the tray in order, and the tray was fixed on the base and in the test barrel. Then, the debris flow was configured according to the test plan, the debris flow was poured into the test barrel, the motor was started, adjusted to the specified speed and recorded. Under the rotation of the agitator, the movement of the debris flow can make the debris flow form an abrasive effect on the concrete sample. After 3 hours of abrasion, the power of the machine was turned off, the debris flow was poured out, and the concrete test block was taken out. After cleaning the surface of the sample, the mass was weighed again and the abrasion results were recorded. By calculating the weight of the concrete test block before and after abrasion, the abrasion surface area, the abrasion time, the density of the concrete test block, etc., the performance parameters of the grade concrete resistant to debris flow abrasion can be obtained.
[0019] During the test, the motor speed can be controlled by a three-phase inverter, thereby controlling the speed of the debris flow to simulate debris flow with different flow rates. At the same time, different types of debris flow and concrete samples of different grades can be configured to simulate a variety of situations; based on the test data, the debris flow erosion resistance of concrete samples of different grades can be tested.
[0020] The use principle of the utility model concrete abrasion resistance test device is to configure debris flow samples with corresponding bulk density, viscosity and particle size ratio according to the actual situation, use the motor to provide external force, so that the agitator drives the debris flow to rotate at a uniform speed in the test barrel, so that the debris flow will be abraded in the process of contact with the concrete test block, and the amount of abrasion will be generated, so as to explore the abrasive capacity of concrete of different grades in different debris flows. Among them, the arc-shaped baffle blades that effectively reduce the possibility of vortex formation by centrifugal action, the three-phase inverter for accurately controlling the motor direction and speed, and the layered design of the circular tray all effectively improve the efficiency of the test and reduce the errors that may occur in the test.
[0021] The beneficial technical effect of the utility model is to configure debris flow with different bulk density, viscosity and particle size ratio and concrete test blocks with different strength grades and components, conduct abrasion resistance tests on concrete test blocks with different grades, explore the abrasion law of debris flow on concrete, determine the debris flow abrasion coefficient of concrete materials with different grades, and thus provide important guidance for the design of debris flow drainage structure.
Claims
1. A concrete abrasion resistance test device, characterized in that: The concrete wear resistance test device consists of a base, a bracket, a test barrel, a tray, a motor and a stirrer; the cylindrical test barrel is placed above the base; the circular tray is arranged in the center of the test barrel and fixed on the base with bolts for placing concrete test blocks; one end of the bracket is connected to the base, and the other end is used to fix the motor; the stirrer is connected to the rotating shaft of the motor and is suspended in the center of the test barrel and directly above the tray; the axis of the stirrer is coaxial with the axes of the cylindrical test barrel and the circular tray.
2. The concrete abrasion resistance testing device according to claim 1, characterized in that: The agitator is made of steel and consists of three square blades and four baffle blades. The three square blades of different heights cover the entire height range of the liquid to ensure uniform stirring. The four baffle blades are arc-shaped to reduce the possibility of liquid forming vortices, thereby reducing the wear caused by centrifugal action.
3. The concrete abrasion resistance testing device according to claim 1, characterized in that: The motor is connected to a three-phase inverter, which can adjust the frequency and voltage of the power supply, thereby accurately controlling the speed and direction of the motor.
4. The concrete abrasion resistance testing device according to claim 1, characterized in that: The circular tray can hold three layers of samples from the inside to the outside, and each layer can hold six concrete samples of different grades. The relationship between the average speeds of the debris flow from the inside to the outside is v=2v=3v, that is, the tray can realize abrasion tests of the same sample and different speeds and the same speed and different samples in one test.
5. The concrete abrasion resistance testing device according to claim 1, characterized in that: The distance between the bottom of the mixer and the concrete test block in the tray is 20 to 40 mm.