Introduction: This asphalt fracture tester (direct tensile method) is designed and manufactured in accordance with the requirements of T 0629-2011 "Asphalt Fracture Performance Test (Direct Tensile Method)" in the industry standard JTG E20-2011 "Test Code for Asphalt and Asphalt Mixtures in Highway Engineering" of the People's Republic of China. It uses the direct tensile test method to detect the failure strain and failure stress performance of asphalt. This asphalt fracture tester (direct tensile method) is suitable for testing the fracture performance of asphalt materials after the original asphalt, asphalt film oven test (RTFOT), and asphalt pressure aging container aging (PAV). It is an ideal asphalt fracture performance testing instrument for various asphalt production enterprises, highway pavement construction enterprises, testing units, relevant scientific research institutes, and colleges. Features: 1. Desktop structure, microcontroller control, stepper motor drive, color touch screen operation, injection of intelligent control elements. 2. Using a single-chip microprocessor as the main controller, the intelligent and automated process of asphalt fracture performance testing is achieved. 3. Using an 800 × 480 color LCD touch screen, the input and output of experimental information are completed through the touch screen. 4. The color LCD touch screen displays real-time test tension, displacement, and temperature parameters. At the end of the test, the values of failure stress and strain are automatically calculated, and the test results are displayed on the display screen. 5. The temperature balance system is composed of a double compressor stacked combination and a heater component, which automatically controls the test temperature and meets the low-temperature conditions required for asphalt fracture performance testing. Technical parameters: Test temperature: room temperature to -40 ℃ Temperature control accuracy: ± 0.1 ℃ Output control: A. Stepper motor; B. Heating wire (1kW); C. Compressor × 2 (1kW × 2) Display parameters: A. Temperature display; B. Tension display; C. Displacement display Communication interface: Three core serial port Working power supply: AC (220 ± 10%) V, 50Hz Power consumption of the whole machine: not more than 3500W Environmental temperature: (20-25) ℃ Relative humidity: ≤ 80% External dimensions (mm): 920 x 740 x 930 (length x width x height)
