Main Technical Specifications and Operating Procedures for the Asphalt Mixture Compaction Tester

　　Nanjing Dongyong Shenfu Technology Co., Ltd. is a high-tech joint-stock enterprise that collaborates with the Nanjing Tuoxing Institute of Instruments and Meters to specialize in the research, development, and production of highway engineering testing instruments. Our products are designed and manufactured strictly in accordance with national standards and standards issued by the Ministry of Transport, featuring advanced technology and comprehensive testing methods. Our institute has established a metrological verification laboratory accredited by the State Administration for Market Regulation, which has been awarded a "Metrological Standard Certificate." This ensures that all instrument measurements and test data are accurate and reliable, and our institute has been recognized by the Nanjing Bureau of Quality and Technical Supervision as a qualified metrological unit. After years of dedicated effort and continuous development, our institute now boasts strong R&D and production capabilities, with a team of highly skilled professionals specializing in mechanics, electronics, computer science, and other related fields.
　　Main technical specifications of the asphalt mixture compaction apparatus:
　　Hammer weight: 4536 ± 5 g (large hammer weight: 10210 ± 9 g)
　　Drop hammer (free fall): (475 ± 1.5) mm
　　Hammering frequency: 60 ± 5 strokes/min
　　Compaction preset count: 0–99 times, with preset count memory function.
　　Mold cylinder diameter: 101.6 mm
　　Power supply voltage: 220V ±10% 370W
　　Operation Procedure for Asphalt Mixture Compaction Tester:
　　a. Before each compaction, the compaction punch, the inner walls of the mold, and the base of the mold should be coated with machine oil.

b. Open the safety door, lift the guide rail slider and the weight hammer, and use the safety control lever to lock the compaction head.
　　c. According to the standard procedure, place the thoroughly mixed asphalt mixture into the test mold, then push the test mold onto the positioning pins on the steel plate platform and securely lock the mold.
　　d. Lift the guide rod and the weight hammer, flip up the safety lever, lower the compaction head, open the safety door, and press the start button to begin the compaction process. The machine will automatically shut down once the preset number of cycles is reached.