Detailed introduction to the asphalt mixture compaction tester

　　The asphalt mixture compaction apparatus is used to prepare asphalt mixture specimens by the compaction method, for laboratory testing of the physical and mechanical properties of asphalt mixtures.
　　Main features of the asphalt mixture compaction tester:
　　1. It can perform automatic counting, automatic compaction, and automatic machine shutdown.
　　2. Equipped with a hammer holder and a manual handle, allowing for easy lifting of the hammer.
　　3. Semi-automatic mold installation makes it more convenient to load and unload molds.
　　4. One-piece hammer head—no risk of detachment, breakage, or cracking.
　　Technical specifications of the asphalt mixture compaction apparatus:
　　1. Drop height: (457 ± 1.5) mm
　　2. Compaction rate: 60 cycles/min ± 5 cycles/min
　　3. Compaction preset count: 0–99 times
　　4. Hammer weight: 4536 ± 5 g
　　5. Mold cylinder diameter: 101.6 mm
　　6. External dimensions: 670 x 590 x 1780 mm
　　7. Weight: 150 kg
　　8. Power supply voltage: 380V
　　9. Power: 750W
　　10. Ambient temperature: 5–40℃
　　11. Ambient humidity: ≤85%
　　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 in place.
　　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. Once the preset number of cycles is reached, the machine will automatically shut down.
　　Precautions for Using the Asphalt Mixture Compaction Tester
　　1. The counter counts in a forward-counting manner.
　　2. The next time you strike, first press the reset button and then the start button.
　　3. When stopping the compaction process—whether due to a machine shutdown or a malfunction—the stop button can be pressed to halt the operation of the compactor.
　　4. The chain tension should be checked regularly, and adjustment should be stopped if its sag exceeds 10 mm.
　　5. Do not start the compaction machine when it is not loaded with mixtures. When not in use, place cotton yarn or shredded paper inside the mold.
　　6. Regularly lubricate the chain and the sliding parts of the weight hammer.
　　7. After each compaction is completed, the test mold, compaction rammer, and steel plate platform should be promptly cleaned and maintained.
　　8. The tension between the steel plate platform and the concrete base should be checked regularly.