CAJ | 학술논문

将沥青组分(RA)从印度尼西亚布敦岩沥青(简称为 BRA)中抽提出来,作为基质沥青的改性剂。选取3个不同的掺配比例(10%,15%和20%),制备 RA改性沥青。采用 SHRP 试验,对改性沥青的高温性能、低温性能及粘温性能进行研究。分析结果表明：BRA 中的沥青组分是一种良好的天然改性剂。随着其掺量的增加,基质沥青的抗车辙因子和高温粘度均有所提高,高温性能和粘温性能均得到显著改善；低温时,蠕变劲度增大,蠕变劲度变化率变小,低温性能有所下降。因此,工程实际应用时,应兼顾沥青的高、低温及粘温性能,建议以基质沥青为基数,沥青组分的掺配比例不宜超过15%。
장력청조분(RA)종인도니서아포돈암력청(간칭위 BRA)중추제출래,작위기질력청적개성제。선취3개불동적참배비례(10%,15%화20%),제비 RA개성력청。채용 SHRP 시험,대개성력청적고온성능、저온성능급점온성능진행연구。분석결과표명：BRA 중적력청조분시일충량호적천연개성제。수착기참량적증가,기질력청적항차철인자화고온점도균유소제고,고온성능화점온성능균득도현저개선；저온시,연변경도증대,연변경도변화솔변소,저온성능유소하강。인차,공정실제응용시,응겸고력청적고、저온급점온성능,건의이기질력청위기수,력청조분적참배비례불의초과15%。
RA was extracted out from the BRA as the asphalt modifier.Three different blending proportion(10%,15%和 20%)are selected for the preparation of RA modified asphalt.SHRP test is used to study high-temperature properties,low temperature per-formance,viscosity-temperature properties of these modified asphalts.The results show that:RA bitumen component is a good natural modifiers,with the increase of its con-tent,the asphalt rutting factor,high temperature viscosity increase significantly and high-temperature performance and viscosity-temperature properties are improved,low creep stiffness increases,low temperature performance decreases.Therefore,during the practical application of engineering,both high pitch,low-temperature and viscosity-tem-perature performance should be considered,it is proposed that base asphalt as the base, the proportion of bitumen blending component should not exceed 15%.