机制砂片状颗粒含量检测方法研究

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SONG Shaomin，WANG Yi

（Beijing Key Laboratory of Building Structure and Environmental Remediation Functional Materials， Beijing University of Civil Engineering and Architecture，Beijing 1OOO44，China）

Abstract：Thisarticleaims toexplorethedefinitionof mechanismsandlikeparticlesandwhetherthereisapossibilityof optimizingthe widthofthe stripsieve holes.Bychanging the widthofthestripsieveholes，acomparative studywasconducted betwenthemodifiedstripsieveandthenationalstandardstripsieve（O.45timessieve）toinvestigate thedetectionrateofflake particlesinthestripsieveandtheefectofregularparticlesonthepeformanceof theadhesivesandafterremoving flake particles.Basedontheexperimental results，the most suitable width ofthestrip sieve holes was determined.Theresults showedthatastripsieve withamesh widthofO.55 timestheaverageparticlesizerangeof the mechanismsand particles（0.55 timessieve）hadhigher screning effciencycomparedtothenational standard stripsieve（O.45timessieve），and the evaluationofflakeparticleswasmorereasonable.Itsregularpartclesweremostbeneficialtotheperformanceofthebinderand concrete；The thresholdforthecontentofflake particles incorresponding ClassImechanismsandshouldbecontrolled within 20% ：

Keywords：machine-made sand；flaky particles；bar screen；mortar performance；concrete performance；mesh width

0 引言

砂是混凝土的重要组成材料。（剩余6913字）