摘要
对粗骨料不规则颗粒的定义和检测方法的优化进行研究,通过改变条形筛筛孔宽度,对比改变后的条形筛与原条形筛的不规则颗粒检出率、筛除不规则颗粒后的混凝土和易性和抗压强度及界面孔隙结构,依据试验结果明确最合适的筛孔宽度。结果表明,筛孔宽度为粗骨料颗粒所属粒径范围平均粒径0.55倍的条形孔筛相比于国标(0.50倍)条形筛筛分效率高,不规则颗粒评价更合理,其规则颗粒配制的混凝土的性能最优。
The definition of coarse aggregate irregular particles and the optimization of detection methods were studied.By changing the screen width of the bar screen,the detection rate of irregular particles,the workability and compressive strength of concrete after removing irregular particles and the interfacial pore structure of the bar screen were compared,and the most suitable screen width was determined according to the test results.The results show that,compared with the national standard(0.50 times),the bar sieve with the screen width of 0.55 times the average particle size of the coarse aggregate particles has higher screening efficiency,more reasonable evaluation of irregular particles,and the performance of the concrete with regular particles is the best.
作者
王毅
宋少民
WANG Yi;SONG Shao-min(Beijing University of Civil Engineering and Architecture,Beijing Key Laboratory of Advanced Functional Materials for Building and Environment,Beijing Advanced Innovation Center for Future Urban Design,Research and application innovation team of green building and green city key technologies,Beijing 100044,China)
出处
《工程建设与设计》
2025年第1期201-203,共3页
Construction & Design for Engineering
基金
机制骨料预拌混凝土应用技术产学研合作(00362020218)。
关键词
混凝土配制
粗骨料
不规则颗粒
条形筛
筛孔宽度
性能
concrete preparaton
coarse aggregate
irregular particles
bar screen
screen hole width
property
作者简介
王毅(1998-),男,内蒙古呼伦贝尔人,从事混凝土研究。
