工程施工技术
ConstructionTechnology
粗骨料不规则颗粒含量检测方法研究
ResearchontheDetectionMethodofIrregularParticleContentinCoarseAggregate
王毅，宋少民
（北京建筑大学，建筑结构与环境修复功能材料北京市重点试验室，北京未来城市设计高精尖创新中心，绿色建筑和
绿色城市关键技术研究与应用创新团队，北京100044）
WANGYi,SONGShao-min
(BeijingUniversityofCivilEngineeringandArchitecture,BeijingKeyLaboratoryofAdvancedFunctionalMaterialsforBuildingand
Environment,BeijingAdvancedInnovationCenterforFutureUrbanDesign,Researchandapplicationinnovationteamofgreenbuildingand
greencitykeytechnologies,Beijing100044,China)
【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。
Abstract铱Thedefinitionofcoarseaggregateirregularparticlesandtheoptimizationofdetectionmethodswerestudied.Bychangingthe
screenwidthofthebarscreen,thedetectionrateofirregularparticles,theworkabilityandcompressivestrengthofconcreteafterremoving
irregularparticlesandtheinterfacialporestructureofthebarscreenwerecompared,andthemostsuitablescreenwidthwasdetermined
accordingtothetestresults.Theresultsshowthat,comparedwiththenationalstandard(0.50times),thebarsievewiththescreenwidthof0.55
timestheaverageparticlesizeofthecoarseaggregateparticleshashigherscreeningefficiency,morereasonableevaluationofirregularparticles,
andtheperformanceoftheconcr