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1、CementandConcreteResearch35(2005)532539Rheologicalpropertiesofhighlyflowablemortarcontaininglimestonefiller-effectofpowdercontentandW/CratioA.Yahiaa,*,M.Tanimurab,Y.ShimoyamabaCivilEngineering,Universite´deSherbrooke,Sherbrooke,Que´bec,CanadaJ1K2R1bCentralR
2、esearchLaboratory,TaiheiyoCementCorporation,2-4-2Osaku,Sakura-City,JapanReceived29March2000;accepted4May2004AbstractTheeffectofalimestonefilleradditioninsuperplasticizedcementmortarwasinvestigated.Themixturesconsideredinthisstudyarehighlyfluid,yetstablemort
3、arsthatcanbeusedtoproportionself-consolidatingconcrete(SCC).Allthemixtureswereproportionedwithafixedunitwatercontentof250landvariouswatercementratiosvaryingfrom0.35to0.45.Alimestonefillerwithaspecificsurfaceareaof2480m/kgwasusedatdifferentadditionpercentage
4、s.Thispaperreportstestresultsleadingtotherecommendationofsuitablepowdercontentsthatcanbeusedtoproportionmortarmixturescontainingalimestonefillerandachievingadequaterheologicalproperties.TestresultsshowthattheeffectoflimestonefillerismainlyaffectedbytheW/Can
5、dthelimestonefillercontentinuse.ForagivenW/C,theadditionofalimestonefillerwithinacertainrangedidnotaffectfluidity.However,beyondacriticaldosage,theincorporationofsomelimestonefillerresultedinasubstantialincreaseoftheviscosityofmortar.Anaccuratemodelthatcanb
6、eusedtopredicttheviscosityofsuchmixturesisproposedandvalidatedonvariousmixtures.D2004ElsevierLtd.Allrightsreserved.Keywords:Highlyflowablemortar;High-rangewaterreducers;Limestonefiller;Self-consolidatingconcrete;Rheology1.Introductionmaterials(SCM),aswellas
7、thecontentandparticlesizedistributionofcoarseaggregates.SCCisamultiphaseSelf-consolidatingconcrete(SCC)isanewgenerationofmaterialinwhichcoarseaggregates(solute)aresuspendedhigh-performanceconcretethatcanexhibithighdeform-inhighlyflowablemortar(solution).The
8、flowpropertiesabilityandcanflowintoplaceunderitsownweightwithoutandsegregationresistanceofSCCareconsequentlycon-anyexternalconsolidationandwithlimitedsignsofsegre-trolledviaproperadjustmentoftherheolog
