Experimental Determination Method of Filler-Asphalt Ratio of Solvent-Based Asphalt Mortar Based on Surface Energy
Publication: International Conference on Road and Airfield Pavement Technology 2023
ABSTRACT
In order to investigate the method of determining the optimum filler-asphalt ratio for solvent-based asphalt, the contact angles of solvent-based asphalt mortars in a certain range of filler-asphalt ratios were tested respectively. Meanwhile, the adhesion work at the mortar-aggregate interface was calculated based on the surface free energy theory. Therefore, the optimum filler-asphalt ratio can be pinpointed according to the peak value of the adhesion work curve. To further verify the strength and uniformity of internal system of mortar under the optimal filler-asphalt ratio identified by the adhesion work, an in-depth analysis of the internal cohesion of the mortar, the asphalt-filler interaction ability and the microscopic morphology of the mortar in the same filler-asphalt ratio range was carried out. The results show that there is a peak in the surface energy of the mortar for the selected filler-asphalt ratio range, as well as the adhesion work curve. In addition, the cohesion of mortar and interaction between the asphalt and the filler also reached the peak. From the microscopic analysis point of view, the asphalt and the filler were most uniformly coated at this point, which is highly consistent with the test results of contact angle. Therefore, the method of determining the optimum filler-asphalt ratio of solvent-based asphalt mortar based on the test results of surface energy is highly scientific and feasible.
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Published In
International Conference on Road and Airfield Pavement Technology 2023
Pages: 737 - 754
History
Published online: Feb 6, 2024
ASCE Technical Topics:
- Adhesives
- Aggregates
- Asphalts
- Building materials
- Chemicals
- Chemistry
- Construction materials
- Continuum mechanics
- Curvature
- Deformation (mechanics)
- Energy methods
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Environmental engineering
- Geometry
- Infrastructure
- Materials engineering
- Mathematics
- Mortars
- Organic compounds
- Pavements
- Solid mechanics
- Solvents
- Structural mechanics
- Transportation engineering
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