CAJ | 학술논문

温拌技术的关键是温拌外加剂.不同的温拌外加剂对沥青混合料的降温效果不同,从而需要经过具体试验来选择合适的温拌外加剂,以达到理想状态.研究4种温拌外加剂对AC-13混合料的降温效果.试验方案:用同种级配及油石比,对不同外加剂的温拌沥青混合料在不同温度下进行马歇尔击实试验,检测试件空隙率变化情况,并对不同外加剂的温拌沥青混合料达相同空隙率时的击实温度进行对比,确定降温效果最为明显的外加剂,并与热拌SBS改性沥青击实试件相对比,确定降温效果.
온반기술적관건시온반외가제.불동적온반외가제대력청혼합료적강온효과불동,종이수요경과구체시험래선택합괄적온반외가제,이체도이상상태.연구4충온반외가제대AC-13혼합료적강온효과.시험방안:용동충급배급유석비,대불동외가제적온반력청혼합료재불동온도하진행마헐이격실시험,검측시건공극솔변화정황,병대불동외가제적온반력청혼합료체상동공극솔시적격실온도진행대비,학정강온효과최위명현적외가제,병여열반SBS개성력청격실시건상대비,학정강온효과.
The key of warm mixing technique is warm mix additive. Because different warm mix additives have different cooling effect on asphalt mixture,so it requires specific tests to select the appropriate warm mix addi-tive in order to achieve the ideal state. This paper compares the cooling effect of four kinds of warm mix addi-tives on AC-13 mixture. With the same grading and asphalt-aggregate ratio,this study conducts Marshall com-paction test of warm mix asphalt mixture with different warm mix additives under different temperatures to de-tect specimen porosity. By comparing the compaction temperatures when the warm mix asphalt mixture with dif-ferent additives reach the same porosity,this study determines the additive with the most obvious cooling effect. Finally the cooling effect can be determined when compared with the compacted specimens of hot mix asphalt modified by SBS.