Asphalt Mixture Theoretical Maximum Specific Gravity and Density Tester

GD— 0711A Asphalt Mixture Theoretical Maximum Specific Gravity and Density Tester
Summary:
V This instrument is designed and made as per T 0711-2011 Standard Test Method for Theoretical Maximum Specific Gravity of Bituminous
V Mixtures(Vacuum process) in JTG E20-201It is suitable to determine the theoretical maximum specific gravity of bituminous mixtures
V by vacuum process. It is used to design the ratio of bituminous mixtures, survey the road condition or calculate the void ratio and compactness
V of road construction. It is not available to determine the lacunose bituminous mixtures which water absorption overs 3%.
Main Technical Features:
V It adopts single chip machine technology to vacuumize, shake, fill air and relieve pressure automatically.
V Equipped with a high-accuracy absolute pressure sensor, the negative pressure can reach 7 kPa+/-0.3 kPa.
V The working status of the vacuum pump can be reflected by a vacuum meter.
V It equips a water buffer device to prevent the water in the negative pressure container from flowing into the vacuum pump.
V It can determine two samples at the same time. Test efficiency is high. The structure is reasonably designed. It is easy to use.
Main Technical Specifications:
V Power supply: AC(220+/-10%)V, 50Hz.
V Volume of vessel: 4000ml*2
V Power of vacuum pump: 160W
V Negative pressure: 7 kPa(275mmHg). Allowable bias is +/-0.3 kPa.
V Power of shaking machine: 30W
V Dimension: 510mm*520mm*380mm
V Optional accessory
V Constant temperature water bath: GDY-1 Low-temperature water bath