摘要
选取两种实际投产破碎工艺线制备的再生细骨料进行颗粒级配、表观密度、压碎指标、含泥量性能试验,分析多种再生细骨料性能差异,考虑骨料堆积位置的影响,并与天然砂进行对比。结果表明:再生细骨料性能满足国家规定的要求;相比底部、中部,位于堆积位置顶部的骨料性能更优;清洗流程能有效提高再生细骨料性能。
In order to consider the influence of aggregate pile position and analyze the different performance of recycled fine aggregatefrom two different crushing process,testing recycled fine aggregate grain size distribution,apparent density,crush index,clay content performance.The results show that the recycled fine aggregate performance can meet national requirements,and the aggregate located in the upper of pile position is better than the lower part.Cleaning process can effectively improve the performance of recycled fine aggregate.
出处
《混凝土》
CAS
北大核心
2016年第9期136-139,共4页
Concrete
基金
教育部2012年度"新世纪优秀人才支持计划"项目"基于循环生命周期理念的混凝土结构性能研究"(NCET-12-0493)
高等学校博士学科点专项科研基金"基于界面参数的再生骨料混凝土全寿命性能劣化规律机理研究"(20120101110025)
关键词
再生细骨料
堆积位置
颗粒级配
表观密度
压碎指标
含泥量
recycled fine aggregate
pile position
grain size distribution
apparent density
crushed index
clay content
