Emulsified asphalt demulsification testing machine

Emulsified asphalt demulsification testing machine is an instrument used to test the demulsification speed and related properties of emulsified asphalt. The following is a detailed introduction about it:

Purpose

Determine the model of emulsified asphalt: Through the test, identify whether the emulsion belongs to the fast cracking (RS), medium cracking (MS) or slow cracking (SS) model, and provide a basis for selecting the appropriate emulsified asphalt for the project.
Evaluate the stability of emulsified asphalt: Understand the demulsification characteristics of emulsified asphalt under different conditions, and evaluate its stability during storage, transportation and use.

The emulsified asphalt demulsification testing machine is professionally designed and manufactured according to the requirements of T0658-1993 "Emulsified Asphalt Demulsification Speed Test" and the requirements stipulated in the JTG E20-2011 "Road Engineering Asphalt and Asphalt Mixture Test Code" marked by the Ministry of Communications of the People's Republic of China.
Technical Parameters
Test tube volume: 5L
Rated voltage: 220V
Speed: 60 rpm
Time control range: 0-99S

Structure and principle

Main structure: usually composed of electric motor, stirring paddle, stirring pot, temperature control device, timing device, etc. Some are also equipped with lifting components, test components, etc., such as the emulsified asphalt demulsification speed test device in the patented technology, which also includes a support frame, a weighing sensor, a reaction tank, an interlayer, etc.
Working principle: Put the emulsified asphalt into the stirring pot, and the motor drives the stirring paddle to rotate at a certain speed to fully mix and stir the emulsified asphalt with water or other additives. During the mixing process, the demulsification speed and stability of the emulsified asphalt are judged by observing the changes in the state of the emulsified asphalt, such as color, consistency, particle distribution, etc., combined with temperature control and time recording.

Operation steps

Preparation: Check whether the instrument is operating normally and clean the stirring pot and stirring paddle. Weigh a certain amount of emulsified asphalt sample and prepare the required additives and water, etc.
Test process: Put the emulsified asphalt sample into the stirring pot, add an appropriate amount of water or other additives, start the motor, and adjust the stirring speed to the specified value. At the same time, turn on the temperature control device and adjust the temperature to the temperature required for the test. During the stirring process, closely observe the state changes of the emulsified asphalt and record relevant data.
Result judgment: According to the test standards and requirements, observe the demulsification phenomenon of emulsified asphalt, such as flocculation, precipitation, stratification, etc., record the demulsification time and demulsification state, so as to evaluate the demulsification speed and stability of emulsified asphalt.

Maintenance and maintenance

Daily maintenance: After each use, clean the sample cavity, pipelines and related components immediately to avoid the influence of sample residue on subsequent test results. Regularly check the power cord, data cable and other connecting parts of the instrument to ensure that there is no wear, breakage or looseness.
Regular calibration: According to the instrument's manual, calibrate regularly with standard samples to ensure the accuracy and reliability of the test results. The calibration cycle should be set according to the frequency of use of the instrument and the type of sample. It is generally recommended to calibrate monthly or every time major maintenance is performed.
Parts inspection and replacement: Regularly check the seals and gaskets inside the instrument to prevent leakage and sample cross-contamination. If aging or damage is found, it should be replaced in time. Check the test needle and pipeline for blockage or corrosion to ensure smooth fluid flow. All parts that come into contact with the sample should be replaced regularly to ensure the measurement accuracy of the instrument.