同济大学学报（自然科学版）2012，Vol.40Issue(5)：685-690,6.DOI:10.3969/j.issn.0253-374x.2012.05.006
橡胶沥青混合料SAC-13级配空隙率变化分析
Air Void Variation of Asphalt Rubber Mixture Grade SAC-13
摘要
Abstract
Based on the design of stone asphalt concrete (SAC) mixture of plain asphalt, a comparative study was made of the influence law of air void of SAC-13 grading on plain asphalt and asphalt rubber mixture with the air void as the variable by setting the asphalt content first and then fine-tune grading. The result shows that for normal SAC-13 mixture, when the oil-aggregate ratio increases by 0.5% each time, air void will decrease by 1% to 1.5% instead. With the increase of 9.5 ~ 13. 2 mm coarse aggregate content, 4. 75 ~ 9. 5 mm aggregate content and the void of coarse aggregates (VCA) will decrease by degrees. With regard to the SAC asphalt rubber mixture, aggregate content (＞9. 5 mm) is recommended to be within 30% ~ 45% and the 4.75 ~ 9.5 mm be within 20% ~40%, in addition, the total volume of coarse aggregate (＞4.75 mm) is proposed to be over 60%, 2.36 ~ 4.75 mm aggregate content is not proposed to be over 10%, and mineral powder to be used little. With the same objective void, SAC-13 asphalt rubber mixture of coarse aggregate content is proposed to be slightly less than normal SAC mixture. As for SAC-13 rubber asphalt mixture, when the content of 2.36 — 4.75 mm aggregate reaches 8%, void increases much more distinctively than that of normal SAC mixture, so the content of this grade should be strictly controlled.关键词
多碎石沥青混凝土(SAC)/橡胶沥青/级配/空隙率Key words
stone asphalt concrete (SAC)/ asphalt rubber/grade/ air void分类
交通工程引用本文复制引用
黄卫东,黄明,郑茂,李彦伟..橡胶沥青混合料SAC-13级配空隙率变化分析[J].同济大学学报（自然科学版）,2012,40(5):685-690,6.基金项目
国家自然科学基金项目(50308021) （50308021）
