1、BRITISH STANDARD BS EN 1008:2002 Mixing water for concrete Specification for sampling, testing and assessing the suitability of water, including water recovered from processes in the concrete industry, as mixing water for concrete The European Standard EN 1008:2002 has the status of a British Standa
2、rd ICS 91.100.30 BS EN 1008:2002 This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 24 July 2002 BSI 24 July 2002 ISBN 0 580 40
3、141 3 National foreword This British Standard is the official English language version of EN 1008:2002. It supersedes BS 3148:1980 which will be withdrawn on 01 December 2003. The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/1, Concr
4、ete production and testing, 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 European publications referred to in this document may be found i
5、n 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 all the necessary provisions of a contract. Users are responsi
6、ble 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 on the interpretation, or proposals for change, and keep the
7、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 18, an inside back cover and a back cover. The BSI copyright date displayed in th
8、is document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN1008 June2002 ICS91.100.30 Englishversion MixingwaterforconcreteSpecificationforsampling,testing andassessingthesuitabilityofwater,inclu
9、dingwaterrecovered fromprocessesintheconcreteindustry,asmixingwaterfor concrete EaudegchagepourbtonsSpcifications dchantillonnage,dessaisetdvaluationdelaptitude lemploi,ycomprisleseauxdesprocessusdelindustriedu bton,tellequeleaudegchagepourbton ZugabewasservonBetonFestlegungenfrdie Probenahme,Prfung
10、undBeurteilungderEignungvon Wasser,einschlielichbeiderBetonherstellung anfallendemWasser,alsZugabewasserfrBeton ThisEuropeanStandardwasapprovedbyCENon4March2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanatio
11、nalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheres
12、ponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Swe
13、den,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN1008:2002EEN1008:2002(E)
14、2 Contents page Foreword3 Introduction .4 1 Scope 4 2 Normativereferences 4 3 Classificationoftypesofwater 5 3.1 Potablewater. .5 3.2 Waterrecoveredfromprocessesintheconcreteindustry. 5 3.3 Waterfromundergroundsources 5 3.4 Naturalsurfacewaterandindustrialwastewater 5 3.5 Seawaterorbrackishwater . 5
15、 3.6 Sewagewater .5 4 Requirements .5 4.1 General5 4.2 Preliminaryassessment 5 4.3 Chemicalproperties . .6 4.4 Settingtimeandstrength. .7 5 Sampling.7 6 Testing 8 6.1 Testmethods 8 6.2 Frequencyfortesting . .9 6.3 Conformityevaluation . 9 7 Report9 AnnexA (normative) Requirementsfortheuseofwaterreco
16、veredfromprocessesintheconcrete industry.10 A.1 Scope 10 A.2 Termsanddefinitions. .10 A.2.1 Waterrecoveredfromprocessesintheconcreteindustry. 10 A.2.2 Combinedwater .10 A.2.3 Surplusconcreteandmortar. .10 A.2.4 Recoveredaggregates 11 A.3 Limitationsontheuseofwaterrecoveredfromprocessesintheconcretei
17、ndustry11 A.4 Requirements .11 A.4.1 General11 A.4.2 Storage11 A.4.3 Distributionofsolidmaterialinthewater . 11 A.4.4 Themassofsolidmaterialpresentintherecoveredwater . .11 A.5 Inspection .12 A.5.1 Density 12 A.5.2 Suitability13 AnnexB (informative) Testingschemeformixingwaterforconcrete 14 AnnexC (
18、informative) Recommendedtestmethods.17 Bibliography 18EN1008:2002(E) 3 Foreword ThisdocumentEN1008:2002hasbeenpreparedbyTechnicalCommitteeCEN/TC104“Concreteandrelated products“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanident
19、icaltextor byendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbewithdrawnatthelatest byDecember2002. ThisstandardhasbeenpreparedbyCEN/TC104WG5Mixingwaterforconcrete“. AnnexAisnormative.TheannexesBandCareinformative. AccordingtotheCEN/CENELECInternalRegulations,thenationalsta
20、ndardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN1008:2002(E) 4 Introduction Thequa
21、lityofthemixingwaterforproductionofconcretecaninfluencethesettingtime,thestrengthdevelopment ofconcreteandtheprotectionofthereinforcementagainstcorrosion. Whenassessingthesuitabilityofwaterofunknownqualityfortheproductionofconcrete,boththecompositionof thewaterandtheapplicationoftheconcretetobeprodu
22、cedshouldbeconsidered. 1Scope ThisEuropeanStandardspecifiestherequirementsforwaterthatissuitableformakingconcretethatconformsto EN2061anddescribesmethodsforassessingitssuitability. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromotherpublications.These n
23、ormativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferencesthelatesteditionofthe publicationr
24、eferredtoapplies(includingamendments). EN1961, MethodsoftestingcementPart1:Determinationofstrength. EN1962, MethodsoftestingcementPart2:Chemicalanalysisofcement. EN1963, MethodsoftestingcementPart3:Determinationofsettingtimeandsoundness. EN19621, MethodsoftestingcementPart21:Determinationofthechlori
25、de,carbondioxideandalkalicontent ofcement. EN2061:2000, ConcretePart1:Specification,performance,productionandconformity. EN123902, TestinghardenedconcretePart2:Makingandcuringspecimensforstrengthtests. EN123903, TestinghardenedconcretePart3:Compressivestrengthoftestspecimens. ENISO99632, Waterqualit
26、yDeterminationofalkalinityPart2:Determinationofcarbonatealkalinity(ISO 99632:1994). ISO4316, SurfaceactiveagentsDeterminationofpHofaqueoussolutionsPotentiometricmethod. ISO78901, WaterqualityDeterminationofnitratePart1:2,6Dimethylphenolspectrometricmethod.EN1008:2002(E) 5 3 Classificationoftypesofwa
27、ter Ingeneralthesuitabilityofwaterfortheproductionofconcretedependsuponitsorigin.Thefollowingtypesmaybe distinguished: 3.1Potable water Thiswaterisconsideredassuitableforuseinconcrete.Suchwaterneedsnotesting. 3.2 Waterrecoveredfromprocessesintheconcreteindustry (Thiswater,definedinA.2.1,willnormally
28、besuitableforuseinconcrete,butshallconformtotherequirementsof annexA. 3.3 Waterfromundergroundsources Thiswatermaybesuitableforuseinconcrete,butshallbetested. 3.4 Naturalsurfacewaterandindustrialwastewater Thiswatermaybesuitableforuseinconcrete,butshallbetested. 3.5 Seawaterorbrackishwater Thiswater
29、maybeusedforconcretewithoutreinforcementorotherembeddedmetal,butisingeneralnotsuitable fortheproductionofreinforcedorprestressedconcrete. Forconcretewithsteelreinforcement,orembeddedmetal,thepermittedtotalchloridecontentintheconcreteisthe determiningfactor. 3.6 Sewagewater Thiswaterisnotsuitableforu
30、seinconcrete. 4Requirements 4.1General Waterforuseinconcreteshallconformtotherequirementsof4.2,4.3.1,4.3.2and4.3.3.Thewatershallalso conformtoeitherthechemicalrequirementsin4.3.4,ortherequirementsforsettingtimeandcompressivestrength in4.4. Watersuppliedaspotablewaterisdeemedtoconformtotherequirement
31、sinthisstandard. Whenwatersaretobecombined(seeA.2.2),therequirementsapplytothecombinedwater. NOTE WaterconformingtotheEuropeanDirective98/83/ECispotablewaterandthereforeconsideredassuitableforuse inconcrete. 4.2Preliminary assessment ThewatershallbeexaminedinaccordancewiththetestproceduresstatedinTa
32、ble1.Waternotconformingtoone ormoreoftherequirementsinTable1maybeusedonly,ifitcanbeshowntobesuitableforuseinconcrete,in accordancewith4.4.EN1008:2002(E) 6 Table1Requirementsandtestproceduresforpreliminaryinspectionofmixingwater Requirement Test procedure 1 Oilsandfats Notmorethanvisibletraces. 6.1.1
33、 2 Detergents Anyfoamshoulddisappearwithin2minutes. 6.1.1 3 Colour Waternotfromsourcesclassifiedin3.2:Thecolourshall beassessedqualitativelyaspaleyelloworpaler. 6.1.1 Waterfromsourcesclassifiedin3.2 A.4 4 Suspendedmatter Waterfromothersources: Maximum4ml.sediment. 6.1.1 Waterfromsourcesclassifiedin3
34、.2. Nosmell,excepttheodourallowedforpotablewateranda slightsmellofcementandwhereblastfurnaceslagis presentinthewater,aslightsmellofhydrogensulphide. 5 Odour Waterfromothersources.Nosmell,excepttheodour allowedforpotablewater.Nosmellofhydrogensulphide afteradditionofhydrochloricacid. 6.1.1 6A c i d s
35、 pH 4 6.1.1 7 Humic matter Thecolourshallbeassessedqualitativelyasyellowish brownorpaler,afteradditionofNaOH. 6.1.2 4.3 Chemicalproperties 4.3.1Chlorides Thechloridecontentofthewater,testedinaccordancewith6.1.3,andexpressedasCl ,shallnotexceedthe levelsgiveninTable2,unlessitcanbeshownthatthechloride
36、contentoftheconcretewillnotexceedthe maximumvalueforthespecifiedclassselectedfrom5.2.7ofEN2061:2000. Table2Maximumchloridecontentofmixingwater Enduse Max.chloridecontentmg/l Testprocedure Prestressedconcreteorgrout 500 Concretewithreinforcementorembeddedmetal 1 .000 6.1.3 Concretewithoutreinforcemen
37、torembeddedmetal 4 .500 4.3.2Sulphates Thesulphatecontentofthewater,testedinaccordancewith6.1.3andexpressedasSO 4 2 shallnotexceed 2000mg/l. 4.3.3Alkali Ifalkalireactiveaggregatesareexpectedtobeusedintheconcrete,thewatershallbetestedforitsalkalicontent inaccordancewith6.1.3.Theequivalentsodiumoxidec
38、ontentofthewatershallnotnormallyexceed1500mg/l.If thislimitisexceeded,thewatermaybeusedonlyifitcanbeshownthatactionshavebeentakentoprevent deleteriousalkalisilicareactions.EN1008:2002(E) 7 NOTE SeeCENReportCR1901Regionalspecificationsandrecommendationsfortheavoidanceofdamagingalkali silicareactionsi
39、nconcrete.“ 4.3.4 Harmfulcontamination Inthefirstinstancequalitativetestsforsugars,phosphates,nitrates,leadandzincmaybecarriedout.Ifthe qualitativetestsshowapositiveresult,eitherthequantityofthesubstanceconcernedshallbedeterminedortests forsettingtimeandcompressivestrengthshallbeperformed. Ifchemica
40、lanalysisischosen,thewatershallconformtothelimitsgiveninTable3. Table3Requirementsforharmfulsubstances Substance Maximumcontent (mg/l) Testprocedure Sugars 100 Phosphates;expressedasP 2 O 5 100 Nitrates;expressedasNO 3 500 6.1.3 Lead;expressedasPb 2+ 100 Zinc;expressedasZn 2+ 100 4.4 Settingtimeands
41、trength Whentestedinaccordancewith6.1.4theinitialsettingtimeobtainedonspecimensmadewiththewatershallbe notlessthan1hourandnotdifferbymorethan25%fromtheinitialsettingtimeobtainedonspecimensmadewith distilledordeionisedwater.Thefinalsettingtimeshallnotexceed12hoursandnotdifferbymorethan25%from thefina
42、lsettingtimeobtainedonspecimensmadewithdistilledordeionisedwater. Themeancompressivestrengthat7daysoftheconcreteormortarspecimens,preparedwiththewater,shallbeat least90%ofthemeancompressivestrengthofcorrespondingspecimenspreparedwithdistilledordeionised water. 5Sampling Asampleofwaterofnotlessthan5
43、litresshallbetaken.Thesampleshallbecorrectlyidentifiedand representativeofthewatertobeused,dueregardbeinggiventothepossibleeffectsofseasonalfluctuations. Thesampleshallbestoredinacleanandsealedcontainer.Thecontainershallberinsedoutwithwaterfromthe sourcepriortofillingtocapacitywiththewatersample. Thewatershallbetestedwithin2weeksofsampling.EN1008:2002(E) 8 6Testing 6.1Test methods 6.1.1Preliminary assessment Asmallsubsampleshallbeassessedassoonaspossibleaftersamplingforoilandfats,detergents,colour, suspendedmatter,odourandhumicmatter. Bringanymaterialthatmayhaves
