一种基于湿法活化工艺的岩沥青改性沥青及其制备方法
By employing a four-step process involving wet activation and composite activation additives, the problems of insufficient activation and cost imbalance in rock asphalt modified asphalt have been solved, resulting in low-cost, high-performance rock asphalt modified asphalt suitable for heavy-duty traffic and urban road engineering, thus improving the stability and ease of construction of asphalt.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGZHOU ASPHALT MIXING CO LTD
- Filing Date
- 2026-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing rock asphalt modified asphalt technologies suffer from problems such as conventional processes, insufficient activation, and an imbalance between performance and cost, making it difficult to meet the demands of road engineering for low-cost, high-performance, easy-to-construct, and highly stable asphalt.
A wet-activated process was adopted, using base asphalt, pretreated Buton rock asphalt, and composite activation additives (oleic amide and terpene resin). The process involved four steps: gradient preheating and melting, stepwise swelling and premixing, multi-field coupling activation, and temperature-controlled crosslinking and maturation, to prepare highly stable rock asphalt modified asphalt.
It achieves low-cost, high-performance rock asphalt modification, with performance superior to ordinary asphalt and lower cost than SBS modified asphalt. It is suitable for heavy-duty traffic highways, urban arterial roads, and old road surface renovation projects. It has excellent road performance with high-temperature rutting resistance and low-temperature crack resistance, and is stable in storage.
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