Research on Testing Method of Asphalt Softening Point

Through a series of softening point tests, the changes of the softening point values ​​measured by the water bath method and the glycerin bath method and the differences between them at different curing temperatures and different heating rates were discussed respectively. Its curing temperature changes and changes, and is proportional to the heating rate, and the proportional coefficient is approximately 15 to 15 glycerin bath method than water. For the same kind of asphalt, the softening point measured by the bath method is higher, and the difference varies with the asphalt. Considering the comparability and accuracy of the test results, it is recommended that the asphalt softening point test all adopt the glycerin bath method.

During the softening point test, it is required to strictly control the heating rate, and the heating rate must be kept within the range of 5 05 à · mn. Heating rate +. / I degrees is too fast, (oil) water temperature rises quickly, asphalt can not be heated up simultaneously, there will be the illusion of softening point too high, but what is the relationship between heating rate and asphalt softening point? In order to understand these problems more clearly, a series of related tests were designed to obtain the relationship between the softening point of asphalt and the heating rate.

1 Asphalt softening point test conditions

2 Analysis of test results of softening point at different curing temperatures

3 Change of asphalt softening point at different heating rates

4 Conclusion

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