Frass Asphalt Brittle Point Meter Experiment Method: 1. Clean the instrument to ensure visibility and observe any changes in the sample during testing. 2. Heat and melt the asphalt sample, then dehydrate it. Once cooled, weigh the sample to match the volume of 0.4 cubic centimeters and place it into a drying cylinder. Heat the cylinder to coat the metal sheet uniformly with a thickness of 0.5 mm. Allow the coated steel sheet to cool at room temperature for one hour. 3. Remove the rubber stopper and add a mixture of solid carbon dioxide and ethanol (or acetone) into the insulation tube. 4. Carefully remove the rubber stopper and insert the asphalt-coated steel sheet between the upper and lower clamps of the device. 5. Reinstall the small rubber stopper and other components, ensuring the thermometer is inserted into the hole on the movable rod. 6. Adjust the cooling rate inside the thermos to 1°C per minute using a pump. 7. Begin swinging the handle when the temperature reaches approximately 100°C below the expected brittle point. Maintain a speed of 5 revolutions, lifting the slider from the first step to the second, creating a 3.5 mm height difference. This causes the steel sheet to bend, and then return it to its original position. Repeat this process as the temperature decreases by 1°C each time. 8. When the test piece cracks, the current temperature is recorded as the brittle point of the asphalt sample. Frass Asphalt Brittle Point Meter Maintenance Instructions: Avoid any collisions during the experiment. Handle the equipment carefully. After testing, wipe all parts and store them in the instrument box to prevent damage from broken glass or other components. Frass Asphalt Brittle Point Meter Description: 1. The average of three parallel tests should be taken as the brittle point, with a deviation not exceeding 3°C. 2. Each instrument comes with four stainless steel plates that should be flattened when not in use and stored in a dry case. 3. This method is provided for reference only and may vary based on specific testing conditions. Frass Asphalt Brittle Point Meter Main Technical Parameters: 1. Operating Temperature: -38°C to 30°C 2. Bending Stroke: 3.5 mm ± 0.2 mm 3. Test Piece Dimensions: 41 mm × 20 mm × 0.15 mm Frass Asphalt Brittle Point Meter Instrument Structure: The device consists of a base, an insulating cylinder, a thermometer, an upper and lower clamp, a fixed rod, a guide rail, a slider, and a handle. The base provides structural support. The insulating cylinder, made of double-layered glass, holds the cooling mixture of dry ice and ethanol. The upper and lower clamps are used to secure the metal plate. The fixed and movable rods are constructed from cloth bakelite, which reduces issues such as lubrication, corrosion, and thermal expansion. The guide rails, sliders, and handles help adjust the axial movement of the rods to bend the metal sheet. A curved glass tube is used for vacuuming and replenishing dry air during the test. Dash Cam For Vw,Parking Mode Dash Cam,Vw Universal Traffic Recorder,4K Dashcam Front And Rear SHENZHEN ROSOTO TECHNOLOGY CO., LTD. , https://www.rdtkdashcam.com