The softening point of asphalt is an important indicator for measuring its thermal stability and temperature adaptability, and is widely used in infrastructure construction such as highways and bridges. The softening point test measures the transition temperature of asphalt from solid to liquid during heating, helping engineers understand the fluidity and performance of asphalt under high temperature conditions. The fully automatic asphalt softening point tester is designed based on the principles of the Guinness method and can automatically complete the testing process, thereby improving measurement efficiency and accuracy.

1、 Experimental principle

　　Fully automatic asphalt softening point testerAccording to the Guinness method, this method involves placing asphalt samples into a predetermined container and applying a certain heating temperature until the asphalt sample softens, forming a specified softening point. The core of this experimental method is to use a pair of metal balls (usually steel balls) to apply a certain weight on the asphalt sample, and use a temperature control system to heat the sample to gradually soften it. When the asphalt sample softens to a certain degree and begins to flow, the metal balls will sink to a certain height, thereby determining the softening point of the asphalt.

2、 Work steps

1. Sample preparation: Firstly, place a certain amount of asphalt sample into a specific testing bottle. The surface of the sample needs to be flat to ensure the accuracy of the test results. Then place the two pre weighed steel balls on the sample, ensuring that the center of the steel balls is aligned with the asphalt sample.

2. Set heating temperature: By setting the heating system, the internal temperature control system starts heating the sample. Equipped with advanced temperature control system, it can accurately control heating rate and temperature. During the heating process, the temperature gradually increases, the asphalt sample gradually softens, and the metal balls begin to settle downwards.

3. Automatic monitoring and control: During the testing process, the built-in sensors of the fully automatic asphalt softening point tester will monitor the softening situation of the sample and the position changes of the metal ball in real time. Real time detection of the sinking state of the steel ball through photoelectric sensors or other precision sensors. When the steel ball sinks to the predetermined standard, the system will automatically record the temperature at this time, which is the softening point of the asphalt.

4. Automatic recording and display: usually equipped with a digital display screen and data recording function. When the temperature reaches the softening point of asphalt, heating will automatically stop and the test results will be displayed. It can also automatically record temperature data and analyze it through a computer to generate test reports.

5. End of experiment and result processing: After the experiment is completed, the heating device will be automatically turned off, and users only need to take out the sample and view the test results of the softening point. Usually equipped with data storage and printing functions, it can provide detailed test reports for engineering and technical personnel to analyze and further use.

The fully automatic asphalt softening point tester greatly improves the efficiency and accuracy of asphalt softening point testing through its automated operation process, precise temperature control system, and efficient data analysis capabilities. It plays an important role in road construction, asphalt production, quality inspection and other fields. With the continuous advancement of technology, it will develop towards higher precision, intelligence, and efficiency.