有干涉条件的二灰稳定类材料骨架状态评价

Skeleton state evaluation of lime-flyash-stabilized-material under interference condition

选取了3种级配、4种富余量共12种典型二灰砂砾混合料方案，对其在不同干涉程度下混合料骨架状态变化特性进行了研究，提出采用平均粒径间距指标建立混合料中粗集料排列状态，据此借助图像分析技术对试验结果进行了分析。结果表明：骨架面积指数和二灰胶砂富余量线形关系良好，可用于评价干涉条件下混合料骨架状态；通过建立的骨架面积修正指数与二灰胶砂富余量关系曲线，发现当二灰胶砂富余量介于50％～100％之间时，因干涉导致的骨架面积修正指数处于最小波动范围。

12 kinds of lime-flyash-gravel mixture with 3 gradations and 4 margins were designed. The changing features of skeleton state of these mixtures under different interference strengths were studied. The arranging state of coarse aggregate was built according to the average-grain- space-index. The test datum were analyzed by photo technology. The results show that： the skeleton-area-index has a good linear relationship with lime-flyash-mortar-margin, and this relationship can be used to evaluate the skeleton state; the relation curve of skeleton-areamodified-index with lime-flyash-mortar margin can be figured, and it can he found that skeletonarea-modified-index change induced by interference is within the smallest bound when lime-flyashmortar-margin is from 50% to 100%. 3 tabs, 4 figs, 12 refs.