CAJ | 학술논문

石棉尾矿酸浸渣是石棉尾矿蛇纹石酸浸提取氧化镁后的硅质粉体材料.本实验以煅烧后的石棉尾矿酸浸渣作为道路沥青填充改性剂,通过测定改性沥青的针入度、延度、软化点等指标,研究了酸浸渣填充量、混合控温以及加热混合时间对道路沥青综合性能的影响.结果表明,石棉尾矿酸浸渣填充改性沥青适宜的填充工艺条件为填充量6%,混合控温140℃,加热混合时间20min;在适宜的填充工艺条件下,改性沥青的高温性能、低温性能、高低温稳定性以及抗老化性均得到显著改善或提高.
석면미광산침사시석면미광사문석산침제취양화미후적규질분체재료.본실험이단소후적석면미광산침사작위도로력청전충개성제,통과측정개성력청적침입도、연도、연화점등지표,연구료산침사전충량、혼합공온이급가열혼합시간대도로력청종합성능적영향.결과표명,석면미광산침사전충개성력청괄의적전충공예조건위전충량6%,혼합공온140℃,가열혼합시간20min;재괄의적전충공예조건하,개성력청적고온성능、저온성능、고저온은정성이급항노화성균득도현저개선혹제고.
The acid-leaching residue of asbestos tailings is silicon slag of asbestos tailings, one kind of solid waste after acid leaching extraction of magnesium. In this experiment, using acid leaching residue of asbestos tailings after calcination as the filler of asphalt modifier, through the test of penetration, ductility, softening point of modified asphalt, the effects of the adding volume and mixing conditions (temperature, time, etc.) of the acid leaching residue on the performance of road asphalt has been studied. The results showed that the appropriate conditions of modified process is that the adding volume of acid leaching residue 6%, mixing temperature 140℃, and heating mixing time 20rain. In this condition, the performance of modified asphalt material, such as high temperature and low temperature performance, temperature sensitivity, and anti-aging property have been significantly improved.