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
