| Popis: |
The paper introduced the design procedure and design method of warm mixing regeneration mixture AC13. The water stability of warm mixing regeneration mixture was studied systematically with Evotherm warm mixing agent and self-prepared interface dispersant, the form change of old asphalt membrane and old aggregate in RAP was analyzed based on interface effect, and the optimum interface dispersant dosage was determined on this base. Results showed that: with the the interface dispersant dosage rising, significant changes of the TSR and splitting strength frozen-thawed before and after of warm mixing regeneration mixture occurred; when the interface dispersant dosage reached 2‰(based on RAP), both the TSR and splitting strength frozen-thawed before and after of warm mixing regeneration mixture were high,which verified the excellent water stability of warm mixing regeneration mixture; superfluous interface dispersant had negative effects on the water stability of warm mixing regeneration mixture.The exfoliation between old asphalt membrane and old aggregate and secondary coat were realized by interface effect. |
