摘要
为了研究四级粗集料 ( 1 9.0 0～ 4.75mm)用量对粗集料间隙率 ( VCA)的影响 ,采用配方均匀设计方法安排了多水平的试验方案 ,并利用加配重的振实试验方法测试了 VCA,对试验数据进行了回归分析。结果表明 ,对 VCA起决定作用的是集料本身的性质 (如表面纹理 ,颗粒形状等 ) ;粗集料中的最细粒径组 ( 9.50～ 4.75mm)所占比例对
In order to analyze the relationship between content of four levels coarse aggregates (19 00～4 75 mm) and the voids in the coarse aggregate(VCA),a test plan to mixture with multilevel is drawn up by using uniform design method.The vibration test with extra weight for compacting is applied to measure VCA,and the regression analysis is done to the VCA data.This study shows that th principal factor to VCA is the surface character of coarse aggregate,and the content of minimum level coarse aggregate(9 50～4 75 mm)has more important effect onVCA than others.
出处
《西安公路交通大学学报》
CSCD
北大核心
2001年第1期33-36,共4页
Journal of Xi'an Highway University
