EN 15304-2010 en Determination of the freeze-thaw resistance of autoclaved aerated concrete《高压蒸汽养护的加气混凝土抗冻结-解冻的测定》.pdf
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1、BS EN 15304:2010ICS 91.100.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDDetermination of thefreeze-thaw resistanceof autoclaved aeratedconcreteThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 March2010
2、 BSI 2010ISBN 978 0 580 63431 4Amendments/corrigenda issued since publicationDate CommentsBS EN 15304:2010National forewordThis British Standard is the UK implementation of EN 15304:2010. Itsupersedes BS EN 15304:2007 which is withdrawn.The UK participation in its preparation was entrusted to Techni
3、calCommittee B/523, Prefabricated components of reinforced autoclavedaerated concrete and lightweight aggregate concrete with open structure.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary
4、 provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 15304:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15304 March 2010 ICS 91.100.30 Supersedes EN 15304:2007English Version Dete
5、rmination of the freeze-thaw resistance of autoclaved aerated concrete Dtermination de la rsistance au gel/dgel du bton cellulaire autoclav Bestimmung des Frost-Tau-Widerstandes von dampfgehrtetem Porenbeton This European Standard was approved by CEN on 23 January 2010. CEN members are bound to comp
6、ly with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Managem
7、ent Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the
8、 official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania
9、, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved wor
10、ldwide for CEN national Members. Ref. No. EN 15304:2010: EBS EN 15304:2010EN 15304:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Definitions, symbols and abbreviations 43.1 Superscripts and subscripts 43.2 Symbols 43.2.1 Symbols used in the main body of the standard 43.2.2 Sy
11、mbols specific to Annex A .54 Principle 65 Apparatus .66 Test specimens 66.1 Sample 66.2 Shape and size of the test specimens .76.3 Number of test specimens 76.4 Preparation of test specimens .76.5 Measurement of test specimens and determination of their volume .86.6 Conditioning of test specimens .
12、87 Testing procedure87.1 Freeze-thaw test .87.2 Determination of actual moisture content and dry density of AAC .98 Test results .98.1 Calculation of dry density .98.2 Calculation of moisture content 108.3 Calculation of mass loss 109 Test report . 11Annex A (informative) Determination of the loss i
13、n compressive strength in addition to the loss in mass . 13A.1 General . 13A.2 Test specimens . 13A.2.1 Number of test specimens . 13A.2.2 Preparation of test specimens 13A.3 Testing procedure. 13A.3.1 Freeze-thaw tests 13A.3.2 Conditioning of the test specimens for compression test after the freeze
14、-thaw cycles. 13A.3.3 Compression test 14A.4 Test results 14A.4.1 Calculation of loss of compressive strength of main test specimens 14A.4.2 Determination of mass loss . 15A.4.3 Calculation of dry density 16A.4.4 Calculation of moisture content 16Annex B (informative) Flow chart of freeze-thaw test
15、17Bibliography . 19Figures Figure 1 Cutting scheme .8Figure B.1 Cutting scheme . 17 BS EN 15304:2010EN 15304:2010 (E) 3 Foreword This document (EN 15304:2010) has been prepared by Technical Committee CEN/TC 177 “Prefabricated reinforced components of autoclaved aerated concrete or lightweight aggreg
16、ate concrete with open structure”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2010, and conflicting national standards shall be withdrawn at
17、 the latest by September 2010. 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. This document supersedes EN 15304:2007. The main change
18、s with respect to EN 15304:2007 are listed below: a) the clause “Definitions, symbols and abbreviations“ has been added; b) the normative references have been updated; c) tolerances have been added to improve the ease of application; d) the calculation of moisture content has been expanded; e) the r
19、equirements for the test report have been expanded; f) the determination of mass loss, calculation of dry density and calculation of moisture content have been clarified. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to i
20、mplement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden,
21、 Switzerland and the United Kingdom. BS EN 15304:2010EN 15304:2010 (E) 4 1 Scope This document specifies a method of determining the freeze-thaw resistance of autoclaved aerated concrete (AAC) manufactured according to EN 12602 or EN 771-4. 2 Normative references The following referenced documents a
22、re indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 678, Determination of the dry density of autoclaved aerated concrete EN 1353, Dete
23、rmination of moisture content of autoclaved aerated concrete EN 12390-4, Testing hardened concrete Part 4: Compressive strength Specification for testing machines 3 Definitions, symbols and abbreviations 3.1 Superscripts and subscripts m main test specimen (superscript) r reference test specimen (su
24、perscript) i identification number of the test specimen (subscript) 3.2 Symbols 3.2.1 Symbols used in the main body of the standard ri,0mmeasured initial moist mass of the reference test specimen i immediately after removal from polythene bag (or similar) rni,m measured moist mass of the reference t
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