1、BS EN 772-5:2016Methods of test for masonryunitsPart 5: Determination of the active solublesalts content of clay masonry unitsBS EN 772-5:2016Incorporating corrigendum March 2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARDNORME EUROPENNEEUROPISCH
2、E NORMEN 772-5March 2016ICS 91.100.25 Supersedes EN 772-5:2001English VersionMethods of test for masonry units - Part 5: Determinationof the active soluble salts content of clay masonry unitsMthodes dessai des lments de maonnerie - Partie 5: Dtermination de la teneur en sels solubles actifs deslment
3、s de maonnerie en terre cuitePrfverfahren fr Mauersteine - Teil 5: Bestimmungdes Gehalts an aktiven lslichen Salzen vonMauerziegelnThis European Standard was approved by CEN on 3 January 2016.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
4、 giving thisEuropean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical referencesconcerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENmember.This European Standard exists in three off
5、icial versions (English, French, German). A version in any other language made bytranslation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC ManagementCentre has the same status as the official versions.CEN members are the national standards bodies of A
6、ustria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swe
7、den, Switzerland, Turkey andUnited Kingdom. This document consolidates EN 772-5:2016 and the corrigendum EN 772-5:2016/AC:2017.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN
8、All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 772-5:2016 EBS EN 772-5:2016 BRITISH STANDARDThis British Standard is the UK implementation of EN 772-5:2016, incoporating corrigendum March 2017. It supersedes BS EN 772-5:2001 which is wi
9、thdrawn.The UK participation in its preparation was entrusted to Technical Committee B/519, Masonry and associated testing.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
10、contract. Users are responsible for its correct application. The British Standards Institution 2017. Published by BSI Standards Limited 2017ISBN 978 0 580 97007 8ICS 91.080.30; 91.100.15Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publish
11、ed under the authority of the Standards Policy and Strategy Committee on 31 March 2016.Amendments/corrigenda issued since publicationDate Text affected30 April 2017 Implementation of CEN corrigendum March 2017: See European foreword for detailsNational forewordEUROPEAN STANDARD NORME EUROPENNE EUROP
12、ISCHE NORM EN 772-5 March 2016 ICS 91.100.25 Supersedes EN 772-5:2001 English Version Methods of test for masonry units - Part 5: Determination of the active soluble salts content of clay masonry units Mthodes dessai des lments de maonnerie - Partie 5: Dtermination de la teneur en sels solubles acti
13、fs des lments de maonnerie en terre cuite Prfverfahren fr Mauersteine - Teil 5: Bestimmung des Gehalts an aktiven lslichen Salzen von Mauerziegeln This European Standard was approved by CEN on 3 January 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate t
14、he 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-CENELEC Management Centre or to any CEN member. This European Standar
15、d 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-CENELEC Management Centre has the same status as the official versions. CEN members are the nation
16、al standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova
17、kia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. This document consolidates EN 772-5:2016 and the corrigendum EN 772-5:2016/AC:2017. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix
18、17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 772-5:2016 E EN 772-5:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 4 4 Symbols . 4 5 Materials . 4 5.1 For
19、all methods 4 5.2 Instrumental method Atomic Absorption Spectroscopy (AAS) and flame photometry 5 5.3 Instrumental method Atomic Absorption Spectroscopy (AAS) and flame photometry or inductively coupled plasma spectrometry (ICP) 5 5.4 EDTA method (alternative) . 5 6 Apparatus . 5 7 Preparation of sa
20、mple . 6 7.1 Sampling . 6 7.2 Crushing 6 8 Extraction procedure . 6 9 Determinations of cations by instrumental techniques . 6 9.1 General 6 9.2 Atomic absorption spectroscopy method (AAS) and flame photometry 6 9.2.1 Sample preparation 6 9.2.2 Calibration: preparation of the reference series . 7 9.
21、2.3 Spectroscopic lines and parameters for AAS and flame photometry analysis . 7 9.3 Inductively coupled plasma spectrometry method (ICP) . 8 9.3.1 General 8 9.3.2 Spectroscopic lines for ICP analysis . 8 9.4 Calculation of the results 8 10 Alternative method of determination of the content of activ
22、e soluble salts . 9 10.1 Preparations of reagents for magnesium determination . 9 10.1.1 Magnesium test solution (1,0 mg Mg/ml) 9 10.1.2 Preparation of EDTA test solution (0,5 %) 9 10.2 First titration (calcium plus magnesium) 9 10.3 Second titration (calcium) . 9 10.4 Magnesium content 9 10.5 Deter
23、mination of sodium and potassium . 9 11 Expression of results . 10 12 Test report 10 EN 772-5:2016 (E) 3 European foreword This document (EN 772-5:2016) has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. This European Standard shall be given the s
24、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2016, and conflicting national standards shall be withdrawn at the latest by December 2017. Attention is drawn to the possibility that some of the elements of this document may be t
25、he 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 772-5:2001. The crushing procedure in 7.2 has been amended so that the sample, after reducing to particles of not greater than approximately 1 mm i
26、n size, is dried in a ventilated oven to constant mass prior to further grinding and sieving. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document includes the corrigendum EN 772-5:2016/AC:2017 which corrects 9
27、.2.2a), 10.4 and 10.5. According 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
28、 Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 772-5:2016EN 772-5:2016 (E)EN 772-5:2016 (E) 2 Contents Pa
29、ge European foreword . 3 1 Scope 4 2 Normative references 4 3 Principle . 4 4 Symbols . 4 5 Materials . 4 5.1 For all methods 4 5.2 Instrumental method Atomic Absorption Spectroscopy (AAS) and flame photometry 5 5.3 Instrumental method Atomic Absorption Spectroscopy (AAS) and flame photometry or ind
30、uctively coupled plasma spectrometry (ICP) 5 5.4 EDTA method (alternative) . 5 6 Apparatus . 5 7 Preparation of sample . 6 7.1 Sampling . 6 7.2 Crushing 6 8 Extraction procedure . 6 9 Determinations of cations by instrumental techniques . 6 9.1 General 6 9.2 Atomic absorption spectroscopy method (AA
31、S) and flame photometry 6 9.2.1 Sample preparation 6 9.2.2 Calibration: preparation of the reference series . 7 9.2.3 Spectroscopic lines and parameters for AAS and flame photometry analysis . 7 9.3 Inductively coupled plasma spectrometry method (ICP) . 8 9.3.1 General 8 9.3.2 Spectroscopic lines fo
32、r ICP analysis . 8 9.4 Calculation of the results 8 10 Alternative method of determination of the content of active soluble salts . 9 10.1 Preparations of reagents for magnesium determination . 9 10.1.1 Magnesium test solution (1,0 mg Mg/ml) 9 10.1.2 Preparation of EDTA test solution (0,5 %) 9 10.2
33、First titration (calcium plus magnesium) 9 10.3 Second titration (calcium) . 9 10.4 Magnesium content 9 10.5 Determination of sodium and potassium . 9 11 Expression of results . 10 12 Test report 10 EN 772-5:2016 (E) 3 European foreword This document (EN 772-5:2016) has been prepared by Technical Co
34、mmittee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. 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 2016, and conflicting national standards shall be withdrawn at the
35、latest by December 2017. 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 772-5:2001. The crushing procedur
36、e in 7.2 has been amended so that the sample, after reducing to particles of not greater than approximately 1 mm in size, is dried in a ventilated oven to constant mass prior to further grinding and sieving. This document has been prepared under a mandate given to CEN by the European Commission and
37、the European Free Trade Association. This document includes the corrigendum EN 772-5:2016/AC:2017 which corrects 9.2.2a), 10.4 and 10.5. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A
38、ustria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sw
39、eden, Switzerland, Turkey and the United Kingdom. BS EN 772-5:2016EN 772-5:2016 (E)EN 772-5:2016 (E) 4 1 Scope This European Standard specifies a method for determining the active soluble salts content of clay masonry units. 2 Normative references The following referenced documents are indispensable
40、 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 771-1, Specification for masonry units Part 1: Clay masonry units ISO 3310-1, Test sieves Technica
41、l requirements and testing Part 1: Test sieves of metal wire cloth ISO 3310-2, Test sieves Technical requirements and testing Part 2: Test sieves of perforated metal plate 3 Principle The method adopted is based on water extraction from a crushed representative sample of the clay masonry units, and
42、determines the amounts of soluble magnesium, sodium and potassium ions, released under the test conditions, which may be correlated with the potentially damaging effect of salts of those ions on cementitious mortars in certain circumstances, or even on the units themselves. These salts are known as
43、active soluble salts in EN 771-1. 4 Symbols MMg is the number of milligrams of Mg equivalent to 1 ml of EDTA x,y is the volume of EDTA titrated, en millilitres (ml) C1 is the lower reference sample concentration, in percentage (%) C2 is the higher reference sample, concentration, in percentage (%) C
44、x is the sample concentration, in percentage (%) E1 is the measured signal for the lower reference sample concentration C1 E2 is the measured signal for the higher reference sample, concentration C2 Ex is the measured signal for sample d is the dilution factor 5 Materials 5.1 For all methods Distill
45、ed or deionized water for extraction of active soluble salts from the sample, and for preparation of analytical test solutions. Hydrochloric acid (relative density 1,18). All chemicals shall be of analytical reagent grade. EN 772-5:2016 (E) 5 5.2 Instrumental method Atomic Absorption Spectroscopy (A
46、AS) and flame photometry Hydrated Lanthanum chloride LaCL3 7H2O, 210 g/l Solution Caesium Chloride CsCl, 63 g/l Solution 5.3 Instrumental method Atomic Absorption Spectroscopy (AAS) and flame photometry or inductively coupled plasma spectrometry (ICP) High purity standard solutions 5.4 EDTA method (
47、alternative) Magnesium metal Ethylenediamine tetra acetic acid (EDTA) Indicators: Calcein Methyl thymol blue complexone Potassium hydroxide Ammonia solution (relative density 0,88) Potassium nitrate 6 Apparatus 6.1 Test sieves, complying with the requirements of ISO 3310-1, ISO 3310-2 6.2 Mortar or
48、other suitable grinding equipment capable of producing particles to pass a 150 m test sieve. 6.3 Polyethylene bottle or Conical flask, typically with a capacity 500 ml 6.4 Weighing instrument, readable to the nearest 0,1 mg 6.5 Burette, typically 10 ml 6.6 Pipette, typically 10 ml, 50 ml 6.7 Graduat
49、ed flask, typically 1 l 6.8 Volumetric flask, typically 100 ml 6.9 One dimensional horizontal shaking equipment, capable of oscillating at (120 5) min1having a horizontal movement of 20 mm, or a rotary shaker capable of revolving at 30 3 revolutions per minute. 6.10 Polyethylene bottle, typically with a capacity of between 1 l and 1,5 l. 6.11 Ventilated oven, capable of maintaining a temperature of (105 5) C BS EN 772-5:2016EN 772-5:2016 (E)EN 772-5:2016 (E) 4 1 Scope This European Standard specifies a method for determin
