EN ISO 12570-2000 en Hygrothermal performance of building materials and products - Determination of moisture content by drying at elevated temperature (Incorporates Amendment A2 20.pdf

1、|BRITISH STANDARDBS EN ISO12570:2000The European Standard EN ISO 12570:2000 has the status of aBritish StandardICS 91.100.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWHygrothermalperformance of buildingmaterials andproductsDetermination ofmoisture content bydrying at eleva

2、tedtemperatureBS EN ISO 12570:2000 +A1:2013BS EN ISO 12570:2000+A1:2013ISBN 978 0 580 77038 8Amendments/corrigenda issued since publicationDate Comments30 June 2013 Implementation of ISO amendment 1:2013 with CEN endorsement A1:2013: Table 1 modifiedThis British Standard, having been prepared under

3、the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 May 2000 The British Standards Institution 2013. Published by BSI Standards Limited 2013National forewordThis British Standard is the UK

4、implementation of EN ISO 12570:2000+A1:2013. It is identical to ISO 12570:2000, incorporating amendment 1:2013. It supersedes BS EN ISO 12570:2000, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/540, Energy performance of materials components and bu

5、ildings.A list of organizations represented on this committee can be obtained on request to its secretary.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 cannot confer immuni

6、ty from legal obligations.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 12570March 2000ICS 91.100.01English versionHygrothermal performance of building materials and products -Determination of moisture content by drying at elevatedtemperature (ISO 12570:2000)Performance hygrothermique des ma

7、triaux et produitspour le btiment - Dtermination du taux dhumidit parschage chaud (ISO 12570:2000)Wrme- und feuchtetechnisches Verhalten von Baustoffenund Bauprodukten - Bestimmung des Feuchtegehaltesdurch Trocknen bei erhlter Temperatur (ISO 12570:2000)This European Standard was approved by CEN on

8、20 May 1999.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obt

9、ained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secre

10、tariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN C

11、OMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCentral Secretariat: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 12570:2000 EEN ISO 12570:2000+A

12、1June 2013Page 3EN ISO 12570:2000ForewordThe text of EN ISO 12570:2000 has been prepared by Technical Committee CEN/TC 89“Thermal performance of buildings and building components“, the secretariat of which is heldby SIS, in collaboration with Technical Committee ISO/TC 163 “Thermal insulation”.This

13、European Standard shall be given the status of a national standard, either by publicationof an identical text or by endorsement, at the latest by September 2000, and conflictingnational standards shall be withdrawn at the latest by December 2001.According to the CEN/CENELEC Internal Regulations, the

14、 national standards organizationsof the following countries are bound to implement this European Standard: Austria, Belgium,Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom.T

15、his standard is one of a series of standards which specify test methods for the thermal andmoisture related properties of building materials and products.IntroductionThe moisture content of a material can be used for various purposes, such as- part of a test method for the moisture related behaviour

16、 of the material;- to characterize the materials state;- to compare the actual moisture content with a critical or safe moisture content or toassess the moisture distribution.The test specimens, number, size and preparation can be specified in the relevant productstandards for the different types of

17、 materials.Page 2BS EN ISO 12570:2000+A1:2013ISO 12570:2000+A1:2013Foreword to amendment A1This document (EN ISO 12570:2000/A1:2013) has been prepared by Technical Committee ISO/TC 163 “Thermal performance and energy use in the built environment” in collaboration with Technical Committee CEN/TC 89 “

18、Thermal performance of buildings and building components” the secretariat of which is held by SIS.This Amendment to the European Standard EN ISO 12570:2000 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2013,

19、and conflicting national standards shall be withdrawn at the latest by December 2013.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights.Ac

20、cording to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germa

21、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 12570:2000/Amd 1:2013 has been approved by CEN as EN ISO

22、 12570:2000/A1:2013 without any modification.Page 2EN ISO 12570:2000ContentspageForeword 3Introduction 31 Scope 42 Normative references 43 Definitions, symbols and units 44 Principle 55 Apparatus 56 Test specimens 67 Procedure 68 Calculation and expression of results 89 Accuracy of measurement 1010

23、Test report 10Annex A (informative) Bibliography 11Page 2EN ISO 12570:2000ContentspageForeword 3Introduction 31 Scope 42 Normative references 43 Definitions, symbols and units 44 Principle 55 Apparatus 56 Test specimens 67 Procedure 68 Calculation and expression of results 89 Accuracy of measurement

24、 1010 Test report 10Annex A (informative) Bibliography 11Page 3BS EN ISO 12570:2000+A1:2013ISO 12570:2000+A1:2013455566779111112Page 3EN ISO 12570:2000ForewordThe text of EN ISO 12570:2000 has been prepared by Technical Committee CEN/TC 89“Thermal performance of buildings and building components“, t

25、he secretariat of which is heldby SIS, in collaboration with Technical Committee ISO/TC 163 “Thermal insulation”.This European Standard shall be given the status of a national standard, either by publicationof an identical text or by endorsement, at the latest by September 2000, and conflictingnatio

26、nal standards shall be withdrawn at the latest by December 2001.According to the CEN/CENELEC Internal Regulations, the national standards organizationsof the following countries are bound to implement this European Standard: Austria, Belgium,Czech Republic, Denmark, Finland, France, Germany, Greece,

27、 Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom.This standard is one of a series of standards which specify test methods for the thermal andmoisture related properties of building materials and products.IntroductionThe moisture con

28、tent of a material can be used for various purposes, such as- part of a test method for the moisture related behaviour of the material;- to characterize the materials state;- to compare the actual moisture content with a critical or safe moisture content or toassess the moisture distribution.The tes

29、t specimens, number, size and preparation can be specified in the relevant productstandards for the different types of materials.Page 4BS EN ISO 12570:2000+A1:2013ISO 12570:2000+A1:2013Page 4EN ISO 12570:20001 ScopeThis standard, which is applicable to porous water permeable materials, specifies a g

30、eneralmethod for determining the free water content of building materials by drying at elevatedtemperature. The standard does not specify the method for sampling.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from otherpublications. These normativ

31、e references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to or revisionsof these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references the lat

32、est edition of the publication referred toapplies.EN ISO 9346 Thermal insulation - Mass transfer - Physical quantities and definitions(ISO 9346)3 Definitions, symbols and units3.1 DefinitionsFor the purposes of this standard, the definitions given in EN ISO 9346 and the followingapply.3.1.1 moisture

33、 content mass by massmass of evaporable water divided by mass of dry material3.1.2 moisture content volume by volumevolume of evaporable water divided by volume of dry material3.1.3 moisture content mass by volumemass of evaporable water divided by volume of dry material3.1.4 dry densitymass per vol

34、ume of dry materialPage 5BS EN ISO 12570:2000+A1:2013ISO 12570:2000+A1:2013Page 5EN ISO 12570:20003.2 Symbols and unitsSymbol Quantity Unitm mass of test specimen kgm0mass of dried test specimen kgu moisture content mass by mass kg/kgV volume of test specimen m3G01moisture content volume by volume m

35、3/m3w moisture content mass by volume kg/m3G020dry density kg/m34 PrincipleThe moisture content is calculated from the mass of the test specimen before drying and themass after drying at elevated temperature.5 ApparatusThe test apparatus shall include:a) ventilated oven capable of maintaining the dr

36、ying temperature with accuracy specified intable 1 and a relative humidity of less than 10 %: in warm, humid climates or at low dryingtemperatures it can be necessary to provide a supply of dried air to achieve this relativehumidity;b) scale or balance capable of weighing test specimens with an unce

37、rtainty not greater than0,1 % of their mass;c) metal rule or metal tape graduated in millimetres and permitting reading to an accuracy of0,5 mm;d) callipers, or any other instrument, capable of reading the dimensions of test specimens to anaccuracy of 0,1 mm;e) desiccator.Page 6BS EN ISO 12570:2000+

38、A1:2013ISO 12570:2000+A1:2013Page 6EN ISO 12570:20006 Test specimens6.1 Dimensions and number of test specimensThe dimensions and number of test specimens, chosen to be representative of the material,shall be specified.NOTE These can be found in the relevant product standard or any other applicabled

39、ocument or agreement.6.2 Preparation of test specimens6.2.1 When test specimens have to be taken from larger elements, cutting and drilling shallnot significantly influence the moisture content.6.2.2 If the moisture content mass by volume, w, or volume by volume, G01, is to bedetermined, the test sp

40、ecimen surfaces shall be clean and sufficiently plane to enabledetermination of the volume to the accuracy specified in 7.2 or 7.3 as relevant. 6.2.3 If the sampling is done in the field or when the drying cannot follow immediately afterthe cutting of the test specimens, the test specimens shall be

41、packed in vapour-tight metalcontainers or wrapped in two layers of low permeability film or foil of vapour resistance atleast 200 MNs/g or sdat least 1000 m (e.g. polyethylene foil of minimum thickness 0,2 mm)and sealed in order to avoid any change in moisture content before drying. When sampling in

42、rain or after immersion, dry the surface of the specimen with a wrung out damp sponge.Care shall be taken to mark the sample to ensure subsequent identification.7 Procedure7.1 Test conditionsThe laboratory temperature during the test shall be (23 6) G01C.7.2 Procedure for test specimens weighed imme

43、diately after cutting from sampleBefore drying, weigh the test specimens with an accuracy of 0,1 % of their mass. If thedetermination of the moisture content mass by volume or volume by volume is required,measure the dimensions of the test specimen with a metal rule or a calliper, with the accuracys

44、tated in clause 5. The error in determining the volume of the test specimen shall not exceed1 %.Dry the specimens at the temperature specified in the relevant product standard to constantmass. If no temperature for drying is specified in any product standard, the value appropriateto the material typ

45、e specified in table 1 shall be used.Page 7BS EN ISO 12570:2000+A1:2013ISO 12570:2000+A1:2013Page 7EN ISO 12570:2000Table 1 - Drying temperaturesMaterial Drying temperatureCMaterials which do not change the structure at 105 G01Ce.g. some mineral materials, wood 105 2Materials, in which changes in st

46、ructure can occurbetween 70 C and 105 G01Ce.g. some cellular plastics70 2Materials, for which higher temperature can drive outwater of crystallisation or affect blowing agentse.g. gypsum or some foams40 2NOTE 1 It is important to choose the drying temperature carefully in order to limit a)any damage

47、 to the specimen; b) any change in mass due to diffusion of materials such asblowing agents in cellular plastics; c) any residual dimensional changes of the testspecimens; and d) any damage to packaging that is included in the test.Constant mass is reached if the change of mass between three consecu

48、tive weighings made24 h apart is less than 0,1 % of the total mass.NOTE 2 If the drying process is very slow, e.g. for thick specimens (larger than0,1 m) or materials with low moisture diffusivity, the time needed to reach constantmass may be correspondingly longer. The interval between successive w

49、eighings canthen be increased e.g. to two or three days. NOTE 3 Cutting the specimens in smaller pieces reduces the time needed to reachconstant mass.Cool the test specimens in a desiccator and weigh them when they have reached 30 C to40 G01C to the same accuracy as given above. NOTE 4 Specimens are weighed before they have completely cooled to minimisere-absorption of moisture. 7.3 Procedure for test specimens, sealed vapour tight a