CAJ | 학술논문

为分析不同再生材料对旧沥青路面胶结料再生性能的影响，基于实际工程抽提回收得到不同老化程度的旧沥青路面胶结料，应用新沥青材料与两种黏度等级的再生剂调配旧沥青路面胶结料制备成再生沥青，分析再生沥青的黏度与针入度指标的变化规律，并对不同再生方法的再生效果进行了比较。试验结果表明：新沥青材料对旧沥青路面胶结料的再生能力有限，再生剂对旧沥青路面胶结料性能指标的改善远优于新沥青；低黏度的再生剂能较好地恢复旧沥青路面胶结料的针入度指标，但对于老化程度较低的旧沥青路面胶结料，会使其黏度指标下降过快，而不能保证再生沥青的高温性能；建议老化等级较低的旧沥青路面胶结料采用黏度等级较高的再生剂再生的方法，老化等级较重的旧沥青路面胶结料采用黏度等级较低的再生剂与新沥青共同再生的方法。
위분석불동재생재료대구력청로면효결료재생성능적영향，기우실제공정추제회수득도불동노화정도적구력청로면효결료，응용신력청재료여량충점도등급적재생제조배구력청로면효결료제비성재생력청，분석재생력청적점도여침입도지표적변화규률，병대불동재생방법적재생효과진행료비교。시험결과표명：신력청재료대구력청로면효결료적재생능력유한，재생제대구력청로면효결료성능지표적개선원우우신력청；저점도적재생제능교호지회복구력청로면효결료적침입도지표，단대우노화정도교저적구력청로면효결료，회사기점도지표하강과쾌，이불능보증재생력청적고온성능；건의노화등급교저적구력청로면효결료채용점도등급교고적재생제재생적방법，노화등급교중적구력청로면효결료채용점도등급교저적재생제여신력청공동재생적방법。
To analyze effect of different materials on properties of aging asphalt, different aging degree of reclaimed asphalt pavements were chosen to obtain the aging asphalt, new asphalt material and two kinds of viscosity grade of regenerant was added to aging asphalt to make recycled asphalt, based on the analysis of change rule of viscosity and penetration index on recycled asphalt, to compare the effect of different regeneration methods. The results show that new asphalt materials can ’ t improve recycled performance of aging asphalt well, regeneration agent on the improvement of the old asphalt performance is far superior to the new asphalt; low viscosity of regenerant can better restore penetration index of old asphalt, but for the low aging of old asphalt, it would make viscosity index falling too fast not to guarantee the high temperature performance of recycled asphalt. It suggests that old asphalt of lighter aging level uses high viscosity grade of recycling agent, old asphalt of heavier aging level uses regeneration of lower viscosity level and the new asphalt.