CAJ | 학술논문

通过室内试验，采用软化点试验和动态剪切流变试验对添加Evotherm和Sasobit温拌剂的SBS改性沥青的高温性能进行评价；采用延度试验和弯曲梁流变试验对添加Evotherm和Sasobit温拌剂的SBS改性沥青的低温性能进行评价。试验结果表明：掺加Evotherm和Sasobit两种温拌剂后，SBS改性沥青的软化点最大增幅为9.5%和25.4%、Fail Temperature值最大增幅为9%和20.4%，两种温拌剂使其高温性能得到较大的改善；相比之下，Sasobit温拌剂对SBS改性沥青的高温性能改善更为显著，使其软化点和Fail Temperature值最大增幅为25.4%和20.4%。；但同时Sasobit也使其延度和弯曲流变性能降低，低温抗裂性能变差，Evotherm对其低温性能的不利影响较小。
통과실내시험，채용연화점시험화동태전절류변시험대첨가Evotherm화Sasobit온반제적SBS개성력청적고온성능진행평개；채용연도시험화만곡량류변시험대첨가Evotherm화Sasobit온반제적SBS개성력청적저온성능진행평개。시험결과표명：참가Evotherm화Sasobit량충온반제후，SBS개성력청적연화점최대증폭위9.5%화25.4%、Fail Temperature치최대증폭위9%화20.4%，량충온반제사기고온성능득도교대적개선；상비지하，Sasobit온반제대SBS개성력청적고온성능개선경위현저，사기연화점화Fail Temperature치최대증폭위25.4%화20.4%。；단동시Sasobit야사기연도화만곡류변성능강저，저온항렬성능변차，Evotherm대기저온성능적불리영향교소。
Through the indoor experiments, this study evaluates the high and low temperature performance of SBS modified asphalt binder with Evotherm and Sasobit by softening point test, dynamic shear rheological test, ductility test and bending beam rheological test. Test results indicate that the maximum elevatory amplitude of softening point ofSBS modified asphalt with Evotherm and Sasobit is 9.5%and 25.4%, while Fail Temperature values is 9%and 20.4%, the high temperature performance is greatly improved with Sasobit being more remarkable for this point. Meanwhile, Sasobit can also lower its ductility and bending rheological property and its low-temperature cracking resistance, while Evotherm has less adverse effects on its low-temperature properties.