EN 1015-18-2002 en Methods of Test for Mortar for Masonry - Part 18 Determination of Water Absorption Coefficient Due to Capillary Action of Hardened Mortar《圬工辅助砌块的试验方法 第18部分 由于毛细作.pdf

1、BRITISH STANDARD BS EN 1015-18:2002 Methods of test for mortar for masonry Part 18: Determination of water absorption coefficient due to capillary action of hardened mortar The European Standard EN 1015-18:2002 has the status of a British Standard ICS 91.100.10 BS EN 1015-18:2002 This British Standa

2、rd, 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 20 December 2002 BSI 20 December 2002 ISBN 0 580 41021 8 National foreword This British Standar

3、d is the official English language version of EN 1015-18:2002. EN 1015-18 is the subject of transitional arrangements agreed under the Commission mandate. The Member States have agreed a nominal transition period for the co-existence of the future “harmonized” European Standards and their correspond

4、ing national standard(s). It is intended that this period will comprise a nominal nine month period during which any required changes to national regulations are to be made, followed by a further nominal twelve month period for the implementation of CE marking. At the end of this co-existence period

5、, the national standard(s) will be withdrawn. There is no corresponding UK national standard. Because EN 1015-18 is a supporting standard to the forthcoming “harmonized” European product standard specification EN 998 Specification for mortar for masonry (two part standard) then the above-mentioned c

6、o-existence period will commence upon the date(s) of availability of EN 998 (for whichever part of EN 998 is the later). An estimation of the date of commencement of this period cannot yet be given. The UK participation in its preparation was entrusted by Technical Committee B/519, Masonry and assoc

7、iated testing, to Subcommittee B/519/2, Mortar, 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 doc

8、ument 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 all the necessary provisions of a contract

9、. 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 on the interpretation, or proposals for c

10、hange, 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 8, an inside back cover and a back cover. The BSI copyright d

11、ate displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN101518 December2002 ICS91.100.10 Englishversion MethodsoftestformortarformasonryPart18:Determination ofwaterabsorptio

12、ncoefficientduetocapillaryactionof hardenedmortar MthodesdessaidesmortierspourmaonneriesPartie 18:Dterminationducoefficientdabsorptiondeaupar capillaritdesmortiers PrfverfahrenfrMrtelfrMauerwerkTeil18: BestimmungderkapillarenWasseraufnahmevon erhrtetemMrtel(Festmrtel) ThisEuropeanStandardwasapproved

13、byCENon6July2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagem

14、entCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstanda

15、rdsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ru

16、edeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN101518:2002EEN101518:2002(E) 2 Contents page Foreword 3 1 Scope.4 2 Normativereferences .4 3 Principle 4 4 Symbols.4 5 Apparatus5 6 Materials5 7 Samplingandpreparationan

17、dstorageoftestspecimens5 8 Procedure6 9 Calculationandexpressionofresults . 8 10 Testreport .8EN101518:2002(E) 3 Foreword Thisdocument(EN101518:2002)hasbeenpreparedbyTechnicalCommitteeCEN/TC 125 “Masonry“,thesecretariatofwhichisheldbyBSI. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,

18、eitherbypublicationofan identicaltextorbyendorsement,atthelatestbyJune2003,andconflictingnationalstandardsshall bewithdrawnatthelatestbySeptember2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthe followingcountriesareboundtoimplementthisEuropeanStandard:Austria

19、,Belgium,Czech Republic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta, Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandtheUnitedKingdom.EN101518:2002(E) 4 1Scope ThisEuropeanStandardspecifiesamethodfordeterminingthewaterabsorptioncoefficientdueto capillaryaction

20、ofhardenedmortarscontainingmineralbindersandnormalaswellaslightweight aggregates. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreference,provisionsfromother publications.Thesenormativereferencesarecitedattheappropriateplacesinthetext,andthe publicationsarelistedhereafter.For

21、datedreferences,subsequentamendmentstoorrevisionsofany ofthesepublicationsapplytothisEuropeanStandardonlywhenincorporatedinitbyamendmentor revision.Forundatedreferencesthelatesteditionofthepublicationreferredtoapplies(including amendments). prEN9981, SpecificationformortarformasonryPart1:Renderingan

22、dplasteringmortar. prEN9982, SpecificationformortarformasonryPart2:Masonrymortar. EN10152:1998, MethodsoftestformortarformasonryPart2:Bulksamplingofmortarsand preparationoftestmortars. EN10153, MethodsoftestformortarformasonryPart3:Determinationofconsistenceoffresh mortar(byflowtable). EN101511,Meth

23、odsoftestformortarformasonryPart11:Determinationofflexuraland compressivestrengthofhardenedmortar. 3Principle Thewaterabsorptioncoefficientduetocapillaryactionismeasuredusingmortarprismspecimens underprescribedconditionsatatmosphericpressure.Afterdryingtoconstantmass,onefaceofthe specimenisimmersedi

24、n5to10mmofwaterforaspecificperiodoftimeandtheincreaseinmass determined. 4Symbols M0 is(forrenovationmortars)thedrymassofthespecimen,(g) M1 isthemassofthespecimenaftersoakingfor10min,(g) M2 isthemassofthespecimenaftersoakingfor90min,(g) M3 is(forrenovationmortars)themassofthespecimenaftersoakingfor24

25、h,(g) C isthecoefficientofwaterabsorptionforanindividualmortarspecimen,(kg/(mmin 0,5 ) (formortarsotherthanrenovationmortars)or(kg/m 2 )(forrenovationmortars) C m isthemeancoefficientofwaterabsorptionofthesampleofmortarduetocapillary action,(kg/(mmin 0,5 )(formortarsotherthanrenovationmortars)or(kg/

26、m 2 )(for renovationmortars)EN101518:2002(E) 5 5Apparatus 5.1 Tray,ofminimumdepthof20mmandofplanarealargeenoughtocontainthespecimensto beimmersedandfittedwithameansofmaintainingaconstantwaterlevel. 5.2 Foursupportpadsorsimilarperspecimen ,tostorethespecimen,withaminimumcontact area,clearofthebasetra

27、yandwiththespecifieddepthofimmersion. 5.3 Stopwatch,graduatedinseconds. 5.4 Weighinginstrument, withanaccuracyof0,1%ofthetotal,drymassofthetestspecimen. 5.5 Ventilatedoven ,capableofmaintainingatemperatureof60C5C. 5.6 Trowelorpaletteknife 5.7 Absorbentfilterpapers withaspecificmassof200g/m 2 20g/m 2

28、 andwaterabsorption capacityof160g/m 2 20g/m 2 ;twelvesheetseachwithasizeofapproximately150mm 175mm. 5.8 Conditioningchamberorroom, capableofmaintainingarelativehumidityof95%5%and 65%5%. 5.9 Metalmouldandotherancillaryapparatus (toproduce160mm 40mm 40mmprism specimens)asdescribedinEN101511. 6Materia

29、ls 6.1 Demineralizedordistilledwater 6.2 Sealingmaterial ,e.g.paraffinwaxorsyntheticreactiveresinwithameltingpointabove60C. 7 Samplingandpreparationandstorageoftestspecimens 7.1General Thefreshmortarforthistestshallhaveaminimumvolumeof1,5loratleast1,5timesthequantity neededtoperformthetest,whichever

30、isthegreater,andshalleitherbeobtainedbyreductionofthe bulktestsample(seeEN10152)usingasampledividerorbyquarteringorbypreparationfrom waterandtheotherconstituentsinthelaboratory.Threetestspecimensshallbepreparedfromthe sampleofmortar. 7.2 Laboratorypreparedmortars Thelengthofmixingperiodshallbemeasur

31、edfromthemomentalltheconstituentsareintroduced intothemixer. ThemortarshallbebroughttoadefinedflowvalueasspecifiedinEN10152determinedin accordancewithEN10153andreported. 7.3 Mortars,otherthanlaboratorypreparedmortars Readytousemortars(factorymadewetmortarswhichareretarded),andprebatchedairlime/sand

32、wetmortarswhennotgaugedwithhydraulicbinders,shallbeusedforspecimenpreparationwithin theirspecifiedworkablelife.EN101518:2002(E) 6 Beforetesting,thebatchshallbegentlystirredbyhandusingatrowelorpaletteknife (5.6)for5sto 10stocounteractanyfalsesettingetc.,butwithoutanyadditionalmixingofthebatch. Theflo

33、wvalueofthemortarinthebulktestsampleshallbedeterminedinaccordancewithEN1015 3andreported. 7.4 Preparationandcuringoftestspecimens Preparethreetestspecimenprismswithdimensions160mm 40mm 40mmaccordingto EN101511.Linethebaseofthemetalmouldwithfilterpaperandfillwithmortarandstrikeoffthe surfaceflushwith

34、thetopofthemould.Placealayeroffilterpaperonthemortarsurface.Curethe testspecimensundertheconditionsdescribedinTable1.Attheendofthecuringperiod,demould thespecimens.Sealthefourlongfacesofthespecimensusingthespecifiedsealingmaterial,then breakthemintotwohalves. Table1Curingoftestspecimens Typeofmortar

35、 Curingtimeatatemperatureof20C2Cindays 95%5%RH(relativehumidity) 65%5%RH inthemould a) withthemouldremoved withthemouldremoved Limemortars 5 2 21 Lime/cementmortarsin whichtheamountof limeisgreaterthan 50%ofthetotalbinder weight 522 1 Cementandotherlime/ cementmortar 252 1 Mortarswithother hydraulic

36、binders 252 1 Retardedmortars 5 2 21 a) Insomecasesanextendedperiodofstorageinthemouldmaybenecessary. 7.5Drying Drythetestspecimenstoconstantmassinaventilatedovenatatemperatureof60C5C. Constantmassisreached,ifduringthedryingprocessintwosubsequentweighingswitha24h interval,thelossinmassbetweenthetwod

37、eterminationsisnotmorethan0,2%ofthetotalmass. Forrenovationmortarsonly,recordthedrymassofeachspecimen(M3). 8Procedure Placethespecimensinthetray(5.1),withthebrokenfacesoftheprismsdownwards,supportedclear ofthebaseofthetrayonthefoursupportpads(5.2),immersedinwater(6.1)toadepthof5mmto 10mmforthedurati

38、onofthetest(seeFigure1).Toensurefullimmersionofroughsurfacetextured specimensavoidingtrappingairbubblesbeneaththem,immersetheminaslopingattitude.EN101518:2002(E) 7 Activatethetimingdevice.Maintainthewaterlevelconstantthroughoutthetest. Coverthetraytoavoidevaporationfromthewettestspecimens. Ifvisible

39、wettingoccursonthefreesurfaceofthetestspecimens,stopthetest.Breakthespecimens toensurethattheyarefullysaturated.Iftheyaresaturatedthenweighthetwopiecestogether.Ifnot fullysaturated,repeatthetestwithanewspecimen. NOTE If,whenthespecimenisbroken,itisnotsaturatedacrossthewholearea,itcanbethatthesealing

40、of thelongfaceswasinadequate.Therefore,specialattentionshouldbepaidtothisaspectofpreparationofany replacementspecimens. Formortarsotherthanrenovationmortars: removethespecimensfromthetrayafter10min,wipeoffrapidlysurfacewaterwithadampened cloth,weighthespecimen(M1)andreplacethemimmediatelyintothetray

41、.Repeatthesame procedureafter90minandweigh(M2). Forrenovationmortarsonly: removethespecimensfromthetrayafter24handweighthem(M3).Immediatelyafterwards, spliteachspecimenalongitslengthtogiveapproximatelypiecesofdimension 80mm40mm20mm.Measuretheheightofwaterpenetrationinthecenterofthespecimen parallelt

42、othe80mmdimensionwithanaccuracyof1mm. A 1 B 2 3 Key 1 Prismspecimen 2 Brokenendfaceofprism 3 Watersurface A 80mmapproximately B Immersion5to10mm* *10mmifsurfaceisheavilytextured Figure1RenderspecimensEN101518:2002(E) 8 9 Calculationandexpressionofresults Forotherthanrenovationmortarsthecoefficientof

43、waterabsorptionisbydefinitionequaltotheslope ofthestraightlinelinkingtherepresentativepointsofthemeasurementscarriedoutat10minand90 min. Calculateitonthebasisofthefollowingformula: () 1 2 1 , 0 M M C - = kg/(m.min 0.5 ) Forrenovationmortaronly,waterabsorptionismeasuredinkg/m 2 after24husingthefollowing formula: () 0 3 625 , 0 M M C - = kg/m 2 andwaterpenetrationdepthisdeterminedinmm. Calculateindividualvaluesofcoefficientofwaterabsorption(C)tothenearest0,05kg/(m.min 0,5 )or nearest0,05kg/masrelevant. Calculatethemeanvalueofcoefficient