Application: It is suitable to test if there is excess asphalt in slurry seal mixture of emulsified asphalt. Specification: 1. Voltage: AC380V±10%,AC220V±10% 2. Hardness of rubber loading wheel: 60-70 3. Roller compacting counter: digital display and adjustable 4. Rolling frequency: 44 times/min. 5. Specimen specific: 3, 5, 6, 8, 10mm 6.Radius of crank: 15cm (inner size 50X380mm)