BD-ASP-0711A asphalt mixture theoretical maximum relative density tester 

The BD-ASP-0711A asphalt mixture theoretical maximum relative density tester is designed according to the requirements stipulated in T 0711-2011 "Theoretical Maximum Relative Density Test of Asphalt Mixtures (Vacuum Method)" in the standard JTG E20-2011 "Testing Procedures for Asphalt and Asphalt Mixtures for Highway Engineering" of the Ministry of Transportation of the People's Republic of China.

This instrument is suitable for measuring the theoretical maximum relative density of asphalt mixture by vacuum method, and can be used for asphalt mixture mix design, road condition investigation or pavement construction quality management to calculate void ratio, compaction degree, etc. However, it is not suitable for asphalt mixtures with porous aggregates with a water absorption rate greater than 3%.

• Using single-chip microcomputer control technology, vacuuming, vibration, etc. are automatically completed
• Using high-precision absolute pressure sensors, the negative pressure in the negative pressure container of the instrument can reach 3.7kPa±0.3kPa
• Equipped with a vacuum gauge, which can directly reflect the working conditions of the vacuum pump
• Equipped with a water buffer device to prevent water in the negative pressure container from entering the vacuum pump
• Parallel testing of two samples can be carried out at the same time, with reasonable structure, convenient use and high efficiency

• Power supply voltage: AC (220±10%) V, 50Hz
• Container volume: 4000ml×2 pieces
• Working pressure: 3.7kPa±0.3kPa