JTG E20-2011 / T 0711, ASTM D2041, AASHTO T209


This instrument is used to determine the theoretical maximum specific gravity and density of uncompacted bituminous paving mixtures at 25°C.

Main technical specifications

1. The oscillation interval: 3min
2. The vacuum degree: 3.7MPa
3. The volume of the vessel: 5000ml × 2
4. Oscillation mode: Continuous / Intermittent
5. Power consumption: 300W
6. Power supply: AC220V, 50Hz

Main technical features

1. SCM control technology. Easy to operate.
2. High-precision absolute pressure sensor, the instrument vacuum container can reach 3.7 kPa ± 0.3 kPa.
3. Equipped with a vacuum gauge to show the working status of the vacuum pump.
4. A water buffer device is installed to prevent water in the negative pressure vessel from entering the vacuum pump.
5. The parallel test of two samples can be carried out simultaneously with reasonable structure. Convenient use and high efficiency.