CAJ | 학술논문

采用新基质沥青、新改性沥青和再生剂再生老化 SBS 改性沥青，测定了不同方式再生后的 SBS 改性沥青 RTFOT老化前后的25℃针入度和老化后的残留延度，以及不同老化时间后的质量损失。通过对不同再生再生方式再生后的 SBS 改性沥青的残留针入度比、残留延度和质量损失率进行对比，分析再生 SBS 改性沥青的老化性能。研究结果表明，通过新改性沥青再生的 SBS 改性沥青的老化性能优于通过新基质沥青和再生剂再生的 SBS改性沥青。
채용신기질력청、신개성력청화재생제재생노화 SBS 개성력청，측정료불동방식재생후적 SBS 개성력청 RTFOT노화전후적25℃침입도화노화후적잔류연도，이급불동노화시간후적질량손실。통과대불동재생재생방식재생후적 SBS 개성력청적잔류침입도비、잔류연도화질량손실솔진행대비，분석재생 SBS 개성력청적노화성능。연구결과표명，통과신개성력청재생적 SBS 개성력청적노화성능우우통과신기질력청화재생제재생적 SBS개성력청。
New matrix asphalt,new modified asphalt and recycling agent was used for the regener-ation of the aging SBS modified asphalt,and the 25 ℃ penetration before and after RTFOT ageing,the residual ductilityafter aging and the mass loss rateafter different aging time was determinded.Through the comparison of the residual penetration ratio,residual ductility and mass loss rate of the SBS modified as-phalt after been regenerated by different ways,the aging property of the regenerated SBS modified asphalt was analyzed.The results show that,the aging property of the regenerated SBS modified asphalt regener-ated by new modified asphalt,is better than the regenerated SBS modified asphalt regenerated by new modified asphalt and recycling agent.