BS EN 14016-2-2004 Binders for magnesite screeds - Caustic magnesia and magnesium chloride - Test methods《菱镁找平层用粘合剂 苛性镁和氯化镁 试验方法》.pdf

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1、BRITISH STANDARD BS EN 14016-2:2004 Binders for magnesite screeds Caustic magnesia and magnesium chloride Part 2: Test methods The European Standard EN 14016-2:2004 has the status of a British Standard ICS 91.100.50 BS EN 14016-2:2004 This British Standard was published under the authority of the St

2、andards Policy and Strategy Committee on 22 January 2004 BSI 22 January 2004 ISBN 0 580 43306 4 National foreword This British Standard is the official English language version of EN 14016-2:2004. The UK participation in its preparation was entrusted by Technical Committee B/507, Paving units, kerbs

3、, screeds and in situ floorings, to Subcommittee B/507/6, Screeds and in situ floorings, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or Euro

4、pean 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 Catalogue or of British Standards Online. This publication does not purport to include a

5、ll 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 understand the text; present to the responsible international/European committee any enquiries

6、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 front cover, an inside front cover, the EN title page, pages 2 to 24, an inside back c

7、over 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 EN140162 January2004 ICS91.100.50 Englishversion Bindersformagnesitescreeds

8、Causticmagnesiaand magnesiumchloridePart2:Testmethods LiantspourchapesbasedemagnsieMagnsie caustiqueetchloruredemagnsiumPartie2:Mthodes dessai BindemittelfrMagnesiaestricheKaustischeMagnesia undMagnesiumchloridTeil2:Prfverfahren ThisEuropeanStandardwasapprovedbyCENon15September2003. CENmembersarebou

9、ndtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisE

10、uropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyp

11、rus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHE

12、SKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN140162:2004:EEN140162:2004(E) 2 Contents page Foreword3 1 Scope 4 2 Normativereferences 4 3 Magnesiumchloridetest. 4 3.1 Sampling.4

13、3.1.1 General4 3.1.2 Aqueoussolution .4 3.1.3 Solidsalt .5 3.2 Chemicalanalysis. .5 3.2.1 General5 3.2.2 Determinationofwaterinsolubleconstituents . .5 3.2.3 SulfatecontentSO 4 2 .6 3.2.4 CalciumcontentCa 2+ .7 3.2.5 MagnesiumcontentMg 2+ 8 3.2.6 MagnesiumsulfateMgSO 4 ,calciumsulfateCaSO 4 ,calcium

14、chlorideCaCl 2 andmagnesium chlorideMgCl 2 9 3.2.7 Alkalichlorides(sodiumchlorideandpotassiumchloride) . 10 3.2.8 DeterminationofthepHvalue. .12 4 Causticmagnesiatest . 12 4.1 Samplingandpreparationofthesample 12 4.2 Chemicalanalysis. .12 4.2.1 General12 4.2.2 Hydrochloricacidinsolubleresidue. .12 4

15、.2.3 SesquioxidesR 2 O 3 (Al 2 O 3 +Fe 2 O 3 )13 4.2.4 CalciumoxideCaO . .14 4.2.5 DeterminationofthefreeCaOcontent. .15 4.2.6 MagnesiumoxideMgO. .15 4.2.7 Lossonignition .16 4.3 Bulkdensity 17 4.3.1 General17 4.4 Fineness18 4.4.1 Apparatus .18 4.4.2 Procedureandevaluation .18 4.5 Settingtime .19 4.

16、5.1 General19 4.5.2 Temperatureandrelativehumidity . .19 4.5.3 Apparatus .19 4.5.4 Magnesiumchloridetestsolution 21 4.5.5 Preparationofthemagnesiapasteofstandardconsistency . 21 4.5.6 Initialandfinalsettingtime .21 4.6 Flexuralstrengthandcompressivestrength 22 4.6.1 General22 4.6.2 Preparationofthem

17、agnesiatestmortarandthetestspecimens22 4.6.3 Procedureandevaluation .23 5 Testreport . .23 Bibliography 24EN140162:2004(E) 3 Foreword Thisdocument(EN140162:2004)hasbeenpreparedbyTechnicalCommitteeCEN/TC303“Floorscreedsandin situflooringsinbuildings”,thesecretariatofwhichisheldbyBSI. ThisEuropeanStan

18、dardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJuly2004,andconflictingnationalstandardsshallbewithdrawnatthelatestby July2004. Thisdocumentbelongstoaseriesofstandardsonscreedmaterialsandfloorscreedsinbuildings. NoexistingEuropeanStandar

19、dissupersededbythisstandard. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowingcoun triesareboundtoimplementthisEuropeanStandard:Austria,Belgium,Cyprus,CzechRepublic,Denmark,Esto nia,Finland,France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuani

20、a,Luxembourg,Malta, Netherlands,Norway,Poland,Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom.EN140162:2004(E) 4 1Scope ThisEuropeanStandardappliestocausticmagnesiaandmagnesiumchlorideusedforthemanufactureofmagne sitescreedmaterialandmagnesitefloorscreedsasspecifiedinEN1 3813andd

21、escribestestmet hodsbymeans ofwhichthefulfilmentoftherequirementsinEN140161canbechecked. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelistedhereafte

22、r.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). EN1961, MethodsoftestingcementPart1:Determinationofstr

23、ength. EN1963, MethodsoftestingcementPart3:Determinationofsettingtimeandsoundness. EN4592, BuildinglimePart2:Testmethods. EN13813, ScreedmaterialsandfloorscreedsScreedmaterialPropertiesandrequirements. EN138921, MethodsoftestforscreedmaterialsPart1:Sampling,makingandcuringspecimensfortest. EN138922,

24、 MethodsoftestforscreedmaterialsPart2:Determinationofflexuralandcompressivestrength. EN140161, BindersformagnesitescreedsCausticmagnesiaandmagnesiumchloridePart1:Definitions,re quirements. ISO33101, TestsievesTechnicalrequirementsandtestingPart1:Testsievesofmetalwirecloth. 3 Magnesiumchloridetest 3.

25、1Sampling 3.1.1General Forthechemicalanalysis,takearepresentativesampleofthefollowingminimumquantitiesfromthebatchtobe tested. 2000gfromanaqueoussolutionor 1000gfromsolidsalt. 3.1.2 Aqueoussolution Forsampling,thoroughlystirthewholequantityinthevessel.Ifsaltshavecrystallisedoutthroughstorageatlow te

26、mperatures,bringthemintosolutionagainbygentlewarmingandstirring.Ifthesolutionhasprecipitatedsalts,do nottakethesamplejustfromtheclearsolutionorfrompartsofthesolutionthatcontainsolidsalt. Ifthevesselhasbeenpartiallyemptiedbeforesamplingandcontainsprecipitatedsalt,itisnotpossibletoobtaina representati

27、vesample.EN140162:2004(E) 5 3.1.3 Solidsalt Samplesshallonlybetakenfromtheinsideoftheblocksorofthesaltmass(melted,groundinflakesorgranules, crystallised).Inordertoobtaincorrectrepresentativesamples,takeseveralindividualsamplesdependingon quantityandtypeofpackagingandcombinethemtomakeacumulativesampl

28、e.Asmagnesiumchlorideattractsa considerableamountofmoisturefromtheair,sampling,sizereductionandmixingoftheindividualsamplesshall becarriedoutasrapidlyaspossible.Storethefinalsamplesintightlystopperedbottles. 3.2 Chemicalanalysis 3.2.1General Thissubclausedescribesreferencemethodsfordeterminingthereq

29、uirementsspecifiedEN140161.Ifothertest methodsareused,itshallbedemonstratedthattheresultsobtainedwiththemareequivalenttotheresultsofthe referencemethods.Incasesofdispute,thereferencemethodshallbeused. Onlyanalyticallypurereagentsshallbeused.Unlessotherwisestated,%meanspercentagebymass.Theterm “water

30、”shallbeunderstoodtomeandistilledwaterorwaterofthesamedegreeofpurity.“ r ”alwaysdesignatesthe densityofaliquidat20C.Dilutionsaregivenasavolumesum,e.g.dilutehydrochloricacid1+19meansthat1 partpervolumeofconcentratedhydrochloricacidshallbemixedwith19partspervolumeofwater. 3.2.2 Determinationofwaterins

31、olubleconstituents 3.2.2.1Apparatus Balanceaccurateto0,0001g; Platinumorporcelaincrucible; Electricoven,adjustableto(1000 25)C; Desiccatorwithdryingagent. 3.2.2.2Reagents Silvernitrate,AgNO 3 ; Nitricacid,concentrated,HNO 3 ( r =1,40g/cm 3 to1,42g/cm 3 ); Silvernitratesolution. Dissolve0,5gofsilvern

32、itratein100mlofwaterandaddafewdropsofnitricacid. 3.2.2.3Procedure and evaluation Add200mlofwaterto100gofaqueousmagnesiumchloridesolutionorto50gofsolidmagnesiumchloride, weighedtothenearest0,0001g,ina400mlbeaker(tallform).After15minofintensivestirring,filterthrougha filterpaper(mediumfast:140sfiltrat

33、iontimeusingtheHerzbergtestsystem)intoa500mlvolumetricflask.Wash thefiltrationresiduewithhotwaterfreefromchloride(checkwithsilvernitratesolution).Thefiltrateisusedtode terminethecontentofthewatersolubleconstituentsandthepHvalue.Drythefilterpaperandthecontentsina redhotcrucibleofknownmassandreducetoa

34、sh.Thenheatthecruciblefor15minat(1000 25)C.Allowthe crucibleanditscontentstocooldowntoroomtemperatureinthedesiccatorandweightheresiduetothenearest 0,0001g.CalculatethewaterinsolubleconstituentsasapercentagebymassWC usingthefollowingequation: E A m m WC 100 = in% whereEN140162:2004(E) 6 m A isthefina

35、lmassing; m E istheinitialmassofaqueousmagnesiumchloridesolutionorsolidmagnesiumchlorideing. Makeupthefiltrateinthe500mlvolumetricflaskcontainingthewatersolubleconstituentswithwatertothemark. 3.2.3 SulfatecontentSO 4 2 3.2.3.1Apparatus Platinum crucible; Electricoven,adjustableto(800 25)C; Desiccato

36、rwithdryingagent. 3.2.3.2Reagents Hydrochloricacid,concentrated,HCl( r =1,18g/cm 3 to1,19g/cm 3 ; Hydrochloricacid,dilute1+11; Bariumchloride2hydrateBaCl 2 2H 2 O; Bariumchloridesolution: Dissolve120gofbariumchlorideinwatertomakeup1000ml; SilvernitrateAgNO 3 ; NitricacidHNO 3 ; Silvernitratesolution

37、: Dissolve0,5gofsilvernitratein100mlofwaterandaddafewdropsofnitricacid. 3.2.3.3Procedure and evaluation Ifaqueousmagnesiumchloridesolutionisthematerialtobetestedfordeterminationofthesulfatecontent,pipette 25mlofthesolutionpreparedasdescribedin3.2.2intoa400mlbeaker.Use50mlofthesolutionasspecifiedin 3

38、.2.2forthedeterminationifthematerialtobetestedissolidmagnesiumchloride.Dilutethesolutionwithwaterto approximately250mlandadjustthepHvalueto2,0to2,5withdilutehydrochloricacid.Dependingonthebarium sulfatecontenttobeexpected,add3mlto5mlofhotbariumchloridesolutionindrops(1mlofbariumchloride solutionto10

39、0mgofbariumsulfate)totheboilingsolutionwhilststirringvigorously.Boilforafurther15mintoen suregoodprecipitation.Allowtostandovernightandfiltertheprecipitatethroughafilterpaper(slow:1500sfiltra tiontimeaccordingtotheHerzbergtestsystem)andwashchloridefreewithboilingwater(checkwithsilvernitrate solution

40、).Transferthefilterpaperandthecontentstoaredhotcrucibleofknownmassandreducetoashatfullair flow.Then,heatat(800 25)Ctoconstantmass( 0,0005g).Allowthecrucibleanditscontentstocooldownto roomtemperatureinthedesiccatorandthenfinallyweightheresiduetothenearest0,0001g.Ifthematerialtobe testedisaqueousmagne

41、siumchloridesolution,calculatethepercentagebymassofsulfatecontentusingthefol lowingequation: Sulfatecontent - 2 4total SO = E A m x m 100 232 , 8 1 in% Ifthematerialtobetestedissolidmagnesiumchloride,calculatethepercentagebymassofsulfatecontentusing thefollowingequation: Sulfatecontent - 2 4total SO

42、 = E A m m 100 116 , 4 2 in%EN140162:2004(E) 7 where m A1 isthefinalmassofbariumsulfateintheaqueousmagnesiumchloridesolutionasthematerialtobetested ingrams; m A2 isthefinalmassofbariumsulfateinthesolidmagnesiumchlorideasthematerialtobetestedingrams; m E istheinitialmassofaqueousmagnesiumchloridesolu

43、tionorsolidmagnesiumchloridespecifiedin3.2.2in grams. 3.2.4 CalciumcontentCa 2+ 3.2.4.1Reagents Sodium hydroxide NaOH; Sodiumhydroxidesolutionapproximately1mol/l: dissolve40gofsodiumhydroxideinwaterandmakeup to1000mlofsolution;keepthesolutioninapolyethylenebottle; Murexide: purpuricacid,ammoniumsalt; NaphtolgreenB: 1nitroso2naphthol6sulfonicacid,ironsodiumsalt; Sodium chloride NaCl; Mur