Adhesion of styrene-butadiene-styrene block copolymer/waste rubber powder/C9 petroleum resin composite modified high-viscosity asphalt

• Published in: He cheng xiang jiao gong ye Vol. 47; no. 4; pp. 342 - 346
• Main Author: SUN Ji-shu1, PU Xia-tian1, XIAO Tian2, GUO Yan-fang3, WANG Song1
• Format: Journal Article
• Language: Chinese
• Published: Editorial Office of China Synthetic Rubber Industry 01.07.2024
• Subjects: modified asphalt， c9 petroleum resin， styrene-butadiene-styrene block copolymer， waste rubber powder， adhesion，water stability
• ISSN: 1000-1255
• DOI: 10.19908/j.cnki.ISSN1000-1255.2024.04.0342

In order to improve the adhesion between high-viscosity modified asphalt and aggregates, high-viscosity modified asphalt (HVAM-2) based on C9 petroleum resin, styrene-butadiene-styrene block copolymer and waste rubber powder was prepared, and the contact angle between it and aggregates was determined and the adhesion work was calculated by titration method. The adhesion of the HVAM-2 mixture was further verified by freeze-thaw splitting test, soak-and-fly test and Hamburg rutting test. The results showed that the lattice structure formed by C9 petroleum resin, styrene-butadiene-styrene block copolymer and waste rubber powder in asphalt could greatly improve the adhesion of asphalt and the bonding ability between asphalt and aggregates. Compared with the base asphalt, the adhesion work of HVAM-2 was increased by 72.9%, and HVAM-2 asphalt mixtures had good water stability.