长沙理工大学学报：自然科学版2012，Vol.9Issue(1)：23-28,6.
橡胶沥青混合料RAC-G级配空隙率变化
Air void variation of asphalt rubber mixture grade RAC-G
摘要
Abstract
RAC-G is one the variation law of void of the specific gradations of asphalt rubber. This study focused on ratio of 9.5 mm RAC-G caused by key size sieve pass rate changes through Marshall Tests. The results showed that oil-aggregate ratio should be controlled at 8.5%-9.5% to ensure RAC-G void ratio was within 3M to 6% range; when oil-aggregate ratio increased every 0.5%, void ratio of asphalt rubber mixture reduced by 0. 9% to 1.2%. Under the premise that the content of 2.36-4.75 mm is strictly controlled below 12%, we can control void ratio by adjusting the relative content of the coarse aggregate （4.75-9.5 mm） and aggregate≤2.36 mm. Compared with ARAC, 9.5 mm RAC-G grad- uation has a much better performance on resisting fatigue cracks and reflective cracks when applied to ultra-thin overlay or stress absorbing layer.关键词
空隙率/级配/RAC-G/橡胶沥青/油石比Key words
void ratio gradation RAC-G/asphalt rubber/oil-aggregate ratio分类
交通工程引用本文复制引用
黄明,郑茂,李彦伟,黄卫东..橡胶沥青混合料RAC-G级配空隙率变化[J].长沙理工大学学报：自然科学版,2012,9(1):23-28,6.基金项目
国家自然科学基金资助项目 （）
