| Abstrakt: |
Based on the index system test of penetration degree and the road performance test, the road performance of bio-oil regenerator for regenerating SBS aged asphalt cement and its thermal regenerated mixture was studied. The optimal dosage of bio-oil regenerator was determined based on the technical indexes closest to SBS modified asphalt (I-C). The results show that the high temperature performance of regenerated SBS modified asphalt decreases with the increase of bio-oil regenerator content, while the low temperature performance and elastic recovery performance gradually improve. The low temperature crack resistance, water stability and fatigue endurance of the hot regeneration mixture can be improved by adding bio -oil regenerant, but the high temperature rut resistance of the hot regeneration mixture can be significantly reduced by adding too much bio-oil regenerant. Biological oil can be used as an alternative to aromatic oil regenerant. The proper content of biological oil regenerant should be 9%~12% of the quality of aged SBS modified asphalt. [ABSTRACT FROM AUTHOR] |
