CAJ | 학술논문

考察了废胶粉掺加量、工艺条件以及基质沥青产地对沥青高温性能和储存稳定性的影响。又进一步研究了添加剂维他连接剂 TOR、多聚磷酸 PPA 对上述性能的影响。结果表明，胶粉掺加量为沥青质量的15%~20%，溶胀时间2~3 h，剪切时间1.5 h，剪切温度186~189℃，剪切速率7000~8000 r/min可显著提高胶粉改性沥青的高温性能和储存稳定性。添加剂可不同程度改善胶粉改性沥青的高温性能和储存稳定性，且基质沥青产地对胶粉改性沥青性能有决定性的影响。
고찰료폐효분참가량、공예조건이급기질력청산지대력청고온성능화저존은정성적영향。우진일보연구료첨가제유타련접제 TOR、다취린산 PPA 대상술성능적영향。결과표명，효분참가량위력청질량적15%~20%，용창시간2~3 h，전절시간1.5 h，전절온도186~189℃，전절속솔7000~8000 r/min가현저제고효분개성력청적고온성능화저존은정성。첨가제가불동정도개선효분개성력청적고온성능화저존은정성，차기질력청산지대효분개성력청성능유결정성적영향。
The influence of mixing amount and process conditions of crumb rubber and origin of matrix asphalt on high-temperature and storage stability of modified asphalt was investigated. Meanwhile the effect of additives such as TOR and PPA on the above mentioned performance was further studied. The results show that, when mixing amount of crumb rubber is in the range of 15%~20% of asphalt quality, swelling time is 2~3 h, shear time is 1.5 h, shear temperature is 186~189℃and shear rate is 7 000~8 000 r/min, high-temperature performance and storage stability of the modified asphalt can be obviously improved. The additives can ameliorate high-temperature performance and storage stability of the modified asphalt in different degrees, and the different production regions of asphalt have a decisive impact on its performance.