沥青混合料中骨架结构特征的评价  

Characteristic Evaluation of Coarse Aggregate in Hot Mix of Asphalt

作　　者：田波[1] 侯芸[1] 杜二鹏[2] 王龙[2] 

机构地区：[1]同济大学道路与交通工程系,上海200092 [2]哈尔滨建筑大学交通学院,黑龙江哈尔滨150090

出　　处：《同济大学学报（自然科学版）》2001年第5期541-545,共5页Journal of Tongji University:Natural Science

摘　　要：在沥青混合料级配设计理论中 ,可采用主骨料间隙率来评价骨架排列紧密程度 .在研究集料填充过程中发现 ,次级集料的填充是填充和干涉并存的 ,次级集料逐步填充是偶然干涉和必然干涉交替出现的 ;同时室内试验证明良好的骨架具有良好的继承性 。Based on volumetric gradation procedure,the voids of coarse aggregate(VCA)is regarded as a good measure to evaluate compactness of coarse aggregate.A vibrating compaction method is used to compact coarse aggregate instead of AASHTO T-19.When the next sieve aggregate is added into the mix,the aggregate will not only fill the voids but also form new voids.The random interference and inevitable interference course come up alternately at a step by step filing precess.California bearing ratio (CBR) test is used as a proper tool to evaluate characteristics of coarse aggregate.And excellent property of skeleton can be inherited by its generation,which provides a good way to find excellent gradation for hot mix of asphalt.

关 键 词：沥青混料 主骨料间隙率 振动成型 级配设计 

分 类 号：TU528.42[建筑科学—建筑技术科学]