Property Evaluation of Asphalt Sheets Modified with Liquid Epoxidized Natural Rubber
발표자
배인희 (동아대학교)
연구책임자
강효 (동아대학교)
초록
내용
This study explores the use of liquid epoxidized natural rubber (LENR) as a sustainable asphalt modifier to improve process efficiency and performance at lower temperatures. Asphalt provides excellent waterproofing and adhesion but loses its properties under cold conditions. Traditional modifiers such as styrene-butadiene-styrene (SBS) copolymers and natural rubber (NR) require high processing temperatures (170–200 °C), increasing energy use. LENR, synthesized via epoxidation and depolymerization of NR, was blended with asphalt below 160 °C. The LENR-modified asphalt sheets exhibited enhanced tensile strength, adhesion, and wet adhesion. A clear relationship was observed between LENR content and mechanical performance. These results demonstrate that LENR effectively enhances asphalt properties while allowing energy-efficient processing, showing promise as an eco-friendly alternative.