1、BRITISH STANDARD BS EN 13286-45:2003 Unbound and hydraulically bound mixtures Part 45: Test method for the determination of the workability period of hydraulically bound mixtures The European Standard EN 13286-45:2003 has the status of a British Standard ICS 93.080.20 BS EN 13286-45:2003 This Britis
2、h Standard, was published under the authority of the Standards Policy and Strategy Committee on 9 December 2003 BSI 9 December 2003 ISBN 0 580 43037 5 National foreword This British Standard is the official English language version of EN 13286-45:2003. The UK participation in its preparation was ent
3、rusted by Technical Committee B/510, Road materials, to Subcommittee B/510/4, Cementitious bound materials, unbound granular materials, waste materials and marginal materials, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its
4、secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic C
5、atalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understa
6、nd the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a
7、 front cover, an inside front cover, the EN title page, pages 2 to 11 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1328645
8、November2003 ICS93.080.20 Englishversion UnboundandhydraulicallyboundmixturesPart45:Test methodforthedeterminationoftheworkabilityperiodof hydraulicallyboundmixtures Mlangestraitsetmlangesnontraitsauxliants hydrauliquesPartie45:Mthodesdessaipourla dterminationdudlaidemaniabilit Ungebundeneundhydraul
9、ischgebundeneGemischeTeil 45:PrfverfahrenzurBestimmungder VerarbeitbarkeitsdauerhydraulischgebundenerGemische ThisEuropeanStandardwasapprovedbyCENon1September2003. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanat
10、ionalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation underther
11、esponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal
12、,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN1328
13、645:2003EEN1328645:2003(E) 2 Contents page Foreword3 1 Scope 5 2 Normativereferences 5 3 Termanddefinition. .5 4 Symbolsandabbreviations . .5 5 Delayedcompactionmethod. .6 5.1 Principle6 5.2 Apparatus .6 5.3 Preparationofthemixtures . .6 5.4 Procedure .6 5.5 Calculationsandexpressionofresults .6 6 S
14、onicpropagationmethod .7 6.1 Principle7 6.2 Apparatus .7 6.3 Preparationofthemixtures . .8 6.4 Procedure .9 6.5 Calculationsandexpressionofresults(seeFigure3) . .9 7 Testreport . .10 AnnexA (normative) DeterminationoftheKcoefficientofthedynamictestingbenchCorrelation betweeninitialpropagationduratio
15、nandpropagationdurationattime t .11EN1328645:2003(E) 3 Foreword Thisdocument(EN1328645:2003)hasbeenpreparedbyTechnicalCommitteeCEN/TC227“Roadmaterials”, thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement
16、,atthelatestbyMay2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby December2004. ThisEuropeanstandardisoneofaseriesofstandardsaslistedbelow. EN132861, UnboundandhydraulicallyboundmixturesPart1:Testmethodsforlaboratoryreferencedensity andwatercontentIntroduction,generalrequirementsand
17、sampling. prEN132862, UnboundandhydraulicallyboundmixturesPart2:Testmethodsforlaboratoryreferencedensity andmoisturecontentProctorcompaction. EN132863, UnboundandhydraulicallyboundmixturesPart3:Testmethodsforlaboratoryreferencedensity andwatercontentVibrocompressionwithcontrolledparameters. EN132864
18、, UnboundandhydraulicallyboundmixturesPart4:Testmethodsforlaboratoryreferencedensity andwatercontentVibratinghammer. EN132865, UnboundandhydraulicallyboundmixturesPart5:Testmethodsforlaboratoryreferencedensity andwatercontentVibratingtable. prEN132867, UnboundandhydraulicallyboundmixturesPart7:Cycli
19、cloadtriaxialtestforunboundmixtures. EN1328640, UnboundandhydraulicallyboundmixturesPart40:Testmethodforthedeterminationofthe directtensilestrengthofhydraulicallyboundmixtures. EN1328641, UnboundandhydraulicallyboundmixturesPart41:Testmethodforthedeterminationofthe compressivestrengthofhydraulically
20、boundmixtures. EN1328642, UnboundandhydraulicallyboundmixturesPart42:Testmethodforthedeterminationofthe indirecttensilestrengthofhydraulicallyboundmixtures. EN1328643, UnboundandhydraulicallyboundmixturesPart43:Testmethodsforthedeterminationofthe modulusofelasticityofhydraulicallyboundmixtures. EN13
21、28644, UnboundandhydraulicallyboundmixturesPart44:Testmethodforthedeterminationofthe alphacoefficientofvitrifiedblastfurnaceslag. EN1328645, UnboundandhydraulicallyboundmixturesPart45:Testmethodforthedeterminationofthe workabilityperiodofhydraulicallyboundmixtures. EN1328646, Unboundandhydraulically
22、boundmixturesPart46:Testmethodforthedeterminationofthe moistureconditionvalue. prEN1328647, UnboundandhydraulicallyboundmixturesPart47:Testmethodsforthebearingcapacity, CaliforniaBearingRatio(CBR),immediateBearingIndex(IB)andlinearswelling. prEN1328648, UnboundandhydraulicallyboundmixturesPart48:Tes
23、tmethodforthedeterminationofthe degreeofpulverization.EN1328645:2003(E) 4 prEN1328649, UnboundandhydraulicallyboundmixturesMethodsformakingtestspecimensPart49: Acceleratedswellingtestforsoiltreatedbylimeand/orhydraulicbinder. prEN1328650,Unboundandhydraulicallyboundmixtures Part 50:Methodsformakingt
24、estspecimens usingProctorequipmentorvibratingtablecompaction. prEN1328651, UnboundandhydraulicallyboundmixturesPart51:Methodsformakingtestspecimensby vibratinghammercompaction. prEN1328652, UnboundandhydraulicallyboundmixturesMethodsformakingtestspecimensPart52: Makingspecimensbyvibrocompression. pr
25、EN1328653, Unboundandhydraulicallyboundmixtures MethodsformakingtestspecimensPart 53: Makingcylindricalspecimensbyaxialcompression. AnnexAisnormative. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria
26、,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN1328645:2003(E) 5 1Scope ThisEuropeanStandarddescribestestmethodstodeterminetheworkabilityperiodofahydrauli
27、callybound mixtureusinggranularmaterials. Twomethodsaredescribed:delayedcompactionandsonicpropagation.Thelattermethodisnotsuitablefor hydraulicallyboundmixturewithDlessthanorequalto6,3mm. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.
28、These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publi
29、cationreferredtoapplies(includingamendments). prEN132862, UnboundandhydraulicallyboundmixturesPart2:Testmethodforthedeterminationofthe laboratoryreferencedensityandmoisturecontentProctorcompaction prEN1328652, UnboundandhydraulicallyboundmixturesMethodsformakingtestspecimensPart52: Makingspecimensby
30、vibrocompression 3 Termsanddefinitions ForthepurposesofthisEuropeanStandard,thefollowingtermanddefinitionapplies. 3.1 workabilityperiod durationoftimecountedfromtheendofthemixing,duringwhich,thebindersettingremainsnilorverylow 4 Symbolsandabbreviations ForthepurposesofthisEuropeanStandard,thefollowi
31、ngsymbolsandabbreviationsapply. q ambientairtemperatureofthetestroom(measuredatless0,5mfromthetestspecimen),expressedin degreeCelsius(C); t time,countedfromtheendofthemixing,inhours(h)andminutes(min); r (0) immediatedrybulkdensityofhydraulicallyboundmixture,expressedinkilogramspercubicmetre(kg/m 3 )
32、, compactedat t=0; r (t) drybulkdensityofhydraulicallyboundmixture,expressedinkilogramspercubicmetre(kg/m 3 ),compacted attime t; W pc workabilityperiod,determinedbycompactionmethod,expressedinhours(h)andminutes(min); d dimensionofthediameterofthetransmitterandthereceiver,inmillimetres(mm); t s time
33、ofthestartoftherecordingofthedurationofthesoundpropagation,inhours(h)andminutes(min); D s (t) durationofthesoundpropagationthroughtheaxisofthetestspecimen,expressedinmicrosecondsat t; W ps workabilityperiod,determinedbysonicmethod,expressedinhours(h)andminutes(min);EN1328645:2003(E) 6 t0 inthesoundp
34、ropagationmethod,thetimeattheendofthemixingofthemixtureinhours(h)andminutes (min); K specificcoefficientforeachdynamictestingbench,determinedasindicatedinannexA. 5 Delayedcompactionmethod 5.1Principle ThehydraulicallyboundmixtureiscompactedbythemodifiedProctortestinaccordancewithprEN132862with incre
35、asingvaluesof tondifferentsamplesofthemixture. Theworkabilityperiod W pc ofthehydraulicallyboundmixtureisthevalueof twhichcorrespondstoareductionof 2%of r (0). 5.2Apparatus TheapparatusshallconformtoprEN132862. 5.3 Preparationofthemixtures Performthetestonthefractionofthemixturewhichpassesthrougha31
36、,5mmsieve.Thequantitytobemixed shallbeatleast1,10timesthequantityusedinaProctormouldBaftercompaction.Aftermixing,placethemixture inanairtightsealedbaguntilitscompactionattime t. Makeatleasttenidenticalsamples.Storethesamplespriortocompactionataconstanttemperature q (within 1,5C). 5.4Procedure Compac
37、teachsamplewithincreasingtime taccordingtotheestimatedvalueof W pc asshowninTable1. Table1Suggestedvaluesof tinh Estimated W pc sample1 sample2 sample3 sample4 sample5 short( 12h) 0 4 7 16 24 Performtwotestspercompactiontime t.Iftheresultsobtainedforeachdeterminationofdrybulkdensitydonot differbymor
38、ethan1%,themeanofthetwovaluesshallbetakenastheresult.Whenthedifferenceisgreater than1%,anewcompactiontestshallbecarriedoutforthesamevalueof t.Themeanofthenearesttwovalues shallbetakenasthetestresult. 5.5 Calculationsandexpressionofresults Foreachcompaction,thedrybulkdensityshallbecalculatedinaccorda
39、ncewithprEN132862.Thetestresult r (t) shallbethemeanoftwodeterminations. Thecurve r (t)shallbeplottedasshowninFigure1. Theworkabilityperiodofthehydraulicallyboundmixture, W pc ,shallbethetime twhichcorrespondstothedrybulk density r (t)equalto98%of r (0).EN1328645:2003(E) 7 Figure1Determinationof W p
40、c bycompactingmethod 6 Sonicpropagationmethod 6.1Principle Thedurationofpropagationofthesound D s (t)throughthelongitudinalaxisofatestspecimenofafreshly compactedhydraulicallyboundmixtureiscontinuouslymeasured. Theworkabilityperiod W ps ofthehydraulicallyboundmixtureisthetime twhen D s (t)isequalto
41、K D s (0). 6.2Apparatus 6.2.1 Dynamictestingbench (seeFigure2),designedforconductingtheteston160mmdiameterby320mm hightestspecimenswhichhavebeenmadebyvibrocompressioninaccordancewithstandardprEN1328652and comprising(seeFigure2).EN1328645:2003(E) 8 Key 1f r a m e 2 vibrocompressionmould 3 endcovers 4
42、 hole 5 soundtransmitter 6 soundreceiver 7 support 8 pneumaticpiston 9 testtube Figure2Diagramofthesonictestingapparatus 6.2.2 Frame,equippedwithasoundtransmitterandreceiverappliedtothematerialbymeansofapneumatic piston. 6.2.3 Soundrecordingdevice forrecordingthesoundpropagationduration D s (t)versu
43、sthetime,consistingofa soundtransmitterandsoundreceiverwithplanebearingsurfacesofdiameter d(505)mm. 6.2.4 Supportformaintainingthetestspecimeninthehorizontalposition.Thetestspecimenismaintained duringthetestdurationinitsvibrocompressionmouldandisprotectedbytwoendcoverswithcentralholesto allowfullcontactbetweenthetransmitterandspecimenandreceiverandspecimen. 6.2.5 Testpiecebar ,approximately320mmlong,withaknownsoundpropagationduration. 6.3 Preparationofthemixtures 6.3.1 Thetestshallbeperformedont
