1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Buildings and civil engineering works - Determination of extrudability for sealantPart 2: Using standardized apparatus (ISO 8394-2:2017)BS EN ISO 8394-2:2017National forewordThis British Standard is the UK implementatio
2、n of EN ISO 8394-2:2017. It is identical to ISO 8394-2:2017. It supersedes BS EN ISO 8394-2:2010, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/547, Sealants for building and construction.A list of organizations represented on this committee can be
3、 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. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 97178 5ICS 91.100.50Complianc
4、e with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 8394-2:2017EURO
5、PEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 8394-2November 2017ICS 91.100.50 Supersedes EN ISO 8394-2:2010, EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN Ref. No. EN IS
6、O 8394-2:2017: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersBuildings and civil engineering works - Determination of extrudability for sealant - Part 2: Using standardized apparatus (ISO 8394-2:2017)Btiments et ouvrages de gnie civil - Dterminat
7、ion de lextrudabilit des mastics - Partie 2: laide dun appareil normalis (ISO 8394-2:2017)Hochbau - Fugendichtstoffe - Teil 2: Bestimmung der Verarbeitbarkeit von Dichtstoffen mit genormtem Gert (ISO 8394-2:2017)This European Standard was approved by CEN on 2 November 2017.CEN members are bound to c
8、omply 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-CENE
9、LEC Management 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-CENELEC Management Centre has the
10、same status as the official versions.CEN members are the national 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, Luxembour
11、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 8394-2:2017 (E)European forewordThis document (EN ISO 8394-2:2017) has been prepared by Technical Committee ISO/TC 59 “Buildings and civil
12、 engineering works” in collaboration with Technical Committee CEN/TC 349 “Sealants for joints in building construction” the secretariat of which is held by AFNOR.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at
13、the latest by May 2018, and conflicting national standards shall be withdrawn at the latest by May 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent right
14、s.This document supersedes EN ISO 8394-2:2010.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, Form
15、er Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO
16、8394-2:2017 has been approved by CEN as EN ISO 8394-2:2017 without any modification.2BS EN ISO 8394-2:2017ISO 8394-2:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 15 Apparatus . 16 General 27 Preparation of the standardized apparatus . 28 Conditioning of
17、 the sealant 28.1 General . 28.2 Single-component sealants 28.3 Multi-component sealants 29 Test procedure 39.1 General . 39.2 Single-component sealants 39.3 Multi-component sealants 310 Expression of results 410.1 Extrusion rate, expressed as mass per minute 410.2 Extrusion rate, expressed as volum
18、e per minute 410.3 Multi-component sealants 411 Test report . 4Bibliography 7 ISO 2017 All rights reserved iiiContents PageBS EN ISO 8394-2:2017ISO 8394-2:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies
19、). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and no
20、n-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are descri
21、bed in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to
22、the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the IS
23、O list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions re
24、lated to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 59, Buildings and civil
25、engineering works, Subcommittee SC 8, Sealants.This second edition cancels and replaces the first edition (ISO 8394-2:2010), which has been technically revised.The main change compared to the previous edition is as follows: figures in this document have been modified.A list of all parts in the ISO 8
26、394 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 8394-2:2017Buildings and civil engineering works Determination of extrudability for sealant Part 2: Using standardized apparatus 1 ScopeThis document specifies a method for determining the extrudability of sealants i
27、ndependently of the package in which they are supplied.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, th
28、e latest edition of the referenced document (including any amendments) applies.ISO 6927, Buildings and civil engineering works Sealants Vocabulary3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 6927 apply.ISO and IEC maintain terminological databases
29、for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 4 PrincipleThe tested sealant is filled in a standardized apparatus.The sealant is extruded under defined conditions. The
30、 mass of the extruded sealant is determined.This document specifies reference test conditions, such as temperature, pressure, extrusion time and geometry of cylinder. Deviation from these conditions is possible. Deviation modifies the final result; therefore, any deviation shall be described in the
31、test report. The comparison of results is possible, only if all the test conditions are the same.5 Apparatus5.1 Regulated enclosure, regulated to (5 2) C, (23 2) C, (35 2) C or a temperature agreed on by the parties concerned.5.2 Pneumatic standardized apparatus, with a test volume of 250 ml or 400
32、ml and with an orifice diameter from 2 mm to 10 mm, as agreed on by the parties concerned (see Figure 1 and Figure 2).5.3 Compressed air, up to 700 kPa.INTERNATIONAL STANDARD ISO 8394-2:2017(E) ISO 2017 All rights reserved 1BS EN ISO 8394-2:2017ISO 8394-2:2017(E)5.4 Stopwatch, accurate to 0,1 s.5.5
33、Balance, accurate to 0,1 g.6 GeneralPerform all the measurements under the same conditions (same batch number, temperature, volume of cylinder and orifice diameter, same pressure, etc.) for the following cases.a) Single-component sealants:1) for each single-component sealant, perform three extrusion
34、 tests;2) for each extrusion test, use one standardized apparatus.b) Multi-component sealants:1) for each multi-component sealant, determine an extrusion test at three different times (see 8.3);2) at each time, perform an extrusion test from three different standardized apparatus;3) carry out nine e
35、xtrusion tests (with three standardized apparatus for each of the threedifferent times).7 Preparation of the standardized apparatusSelect the volume of the cylinder and the diameter of the orifice, according to the viscosity of the tested sealant, or as agreed on by the parties concerned.Fit the plu
36、nger and ring of the standardized apparatus and insert in the cylinder, with the ring towards the orifice.8 Conditioning of the sealant8.1 GeneralCondition the single- or multi-component sealant and the cylinder at the testing temperature in the regulated enclosure (5.1) for a minimum of 12 h before
37、 testing.The default conditioning temperature is (23 2) C.This test temperature may be at (5 2) C, (23 2) C or (35 2) C, or a temperature agreed on by the parties concerned.8.2 Single-component sealantsFill the cylinder of the standardized apparatus with the sealant, avoiding the formation of air bu
38、bbles.8.3 Multi-component sealantsFollow the instructions of the sealant manufacturer concerning the mixing procedure of the sealant.Using the instructions of the sealant manufacturer, calculate the extrusion times corresponding to: the quarter of pot life at the corresponding testing temperature; t
39、he middle of pot life at the corresponding testing temperature; the third quarter of pot life at the corresponding testing temperature.2 ISO 2017 All rights reservedBS EN ISO 8394-2:2017ISO 8394-2:2017(E)Fill the cylinder of the standardized apparatus with the multi-component sealant, avoiding the f
40、ormation of air bubbles.9 Test procedure9.1 GeneralThe measurements may be carried out at usual laboratory room temperature. All the following operations shall be carried out within 5 min.Put the cylinder in the standardized apparatus.Set the air pressure of the compressor to (300 10) kPa or at any
41、pressure as agreed on by the parties concerned.Extrude a sufficient quantity of sealant to remove the air from the orifice.9.2 Single-component sealantsImmediately, extrude the sealant out of the cylinder for 30 s. This time shall be measured using the stopwatch (5.4). Do not take into account the q
42、uantity of sealant coming out of the orifice after the end of test time.The cylinder shall not be empty after testing.If necessary, due to the rheological behaviour of the sealant, the test may be performed after a suitable recovery time of the sealant, as agreed on by the parties concerned. Conditi
43、on the cylinder in the regulated enclosure, during the recovery time.NOTE In the case of a low viscosity sealant, the extrusion time can be lower. In the case of a high viscosity sealant, the extrusion time can be higher.After the pneumatic extrusion, weigh the quantity of extruded sealant, with the
44、 balance (5.5).9.3 Multi-component sealantsExtrude the sealant out of the cylinder for a total of three extrusions, each corresponding to one of the three pot life times (see 8.3). Do not take into account the quantity of sealant coming out of the orifice after the end of test time. The cylinder sha
45、ll not be empty after these three extrusions.Place the cylinder back into the regulated enclosure between the three measurements.After each pneumatic extrusion, weigh the quantity of extruded sealant, with the balance (5.5). ISO 2017 All rights reserved 3BS EN ISO 8394-2:2017ISO 8394-2:2017(E)10 Exp
46、ression of results10.1 Extrusion rate, expressed as mass per minuteThe result of each measurement, expressed in grams of extruded sealant per minute, is rounded to the nearest gram, using Formula (1):Emtm60= (1)whereEmis the extrusion rate of the sealant, expressed in grams per minute;m is the mass
47、of the extruded sealant, expressed in grams;t is the time of extrusion, expressed in seconds.Calculate the mean value of the three measurements, rounded to the nearest gram per minute.10.2 Extrusion rate, expressed as volume per minuteIf needed, the result may be expressed in millilitres of extruded
48、 sealant per minute, rounded to the nearest millilitre, using Formula (2):EEDvm= (2)whereEvis the extrusion rate of the sealant, expressed in millilitres per minute;Emis the extrusion rate of the sealant, expressed in grams per minute;D is the density of the sealant, at the test temperature of the s
49、ealant.10.3 Multi-component sealantsPlot the graph mean value of E m= f (time elapsed after mixing), allowing for the determination of the increase of viscosity of the multi-component sealant during its working time.11 Test reportThe test report shall contain the following information:a) a reference to this document, i.e. ISO 8394-2;b) the test laboratorys name and date of test;c) the name, type (chemical family) and colour of sealant;d) the batch number of sealant;e) the conditioning temperature;f) the volume of
