Theoretical Maximum Relative Density Meter automatic LHMD-6

LHMD-6 Theoretical Maximum Relative Density Meter automatic

Description:

This instrument is designed and manufactured in accordance with the requirements specified in T 0711-2011 "Theoretical Maximum Relative Density Test of Asphalt Mixture (Vacuum Method)" of JTG E20-2011 "Test Code for Asphalt and Asphalt Mixtures in Highway Engineering" issued by the Ministry of Transport of the People's Republic of China. Suitable for determining the theoretical maximum relative density of asphalt mixture using vacuum method, used for asphalt mixture mix design, road condition investigation, or pavement construction quality management calculation of void ratio, compaction degree, etc. But it is not suitable for asphalt mixtures with porous aggregates with a water absorption rate greater than 3%.

1、 Main technical features

1. Using microcontroller control technology, vacuum pumping, vibration, air supply, and pressure relief are all automatically completed.

2. Using high-precision absolute pressure sensors, the negative pressure inside the instrument's negative pressure container can reach 3.7 kPa ± 0.3 kPa.

3. Equipped with a vacuum gauge, it can directly reflect the working condition of the vacuum pump.

4. Equipped with a water accumulation buffer device, it can prevent water from the negative pressure container from entering the vacuum pump.

5. Parallel testing of two samples can be conducted simultaneously, with a reasonable structure, convenient use, and high efficiency.

2、 Main technical parameters and indicators

1. Power supply voltage: AC (220 ± 10%) V, 50Hz;     

2. Container capacity: 4000ml x 2 pieces;

3. Vacuum pump power: 160W;

4. Negative pressure inside the negative pressure container: 3.7 kPa (27.75mmHg), allowable deviation ± 0.3 kPa;

5. Vibration motor power: 30W;                 

6. Dimensions: 510mm x 520mm x 380mm (length x width x height).