New Standard Asphalt Mixture Theoretical Maximum Relative Density Meter

New Standard Asphalt Mixture Theoretical Maximum Relative Density Meter is a professional instrument used to measure the theoretical maximum relative density of asphalt mixture.

New Standard Asphalt Mixture Theoretical Maximum Relative Density Mete Working Principle

Generally, the vacuum method principle is adopted. The asphalt mixture sample is placed in a negative pressure container with a sealed cover, and the container is evacuated by a vacuum pump to form a negative pressure environment in the container, thereby removing the air in the mixture. At the same time, the negative pressure container is vibrated by a vibration device to accelerate the exhaust of air and ensure thorough exhaust. When the air in the container is fully exhausted, according to the Archimedes principle, the theoretical maximum relative density of the asphalt mixture is calculated by measuring the volume change of water in a container of known volume.

Main Features

High degree of automation: It has functions such as automatic exhaust, automatic constant pressure, and automatic timing. It can complete the entire test process according to the preset program, reduce manual operation errors, and improve test efficiency and accuracy.
Double-barrel design: Many models adopt a double-barrel structure, which can test two samples at the same time, improve work efficiency, and facilitate parallel testing, comparison and verification of test results.
Thorough exhaust: The high-frequency and low-amplitude oscillation exhaust method is adopted, and the vacuum exhaust system can more effectively remove the air in the asphalt mixture, making the test results more accurate.
Good sealing performance: The container adopts high-quality materials and sealing technology, such as imported sealing rings, to ensure that there will be no leakage, cracking and other problems during the vacuuming and vibration process, ensuring the smooth progress of the test.
Strong display and control functions: Equipped with a large-screen LCD display, it can intuitively display test parameters and status information such as negative pressure value and oscillation time, which is convenient for operators to monitor and operate in real time.