1、BS EN ISO 8394-2:2010Building construction Jointing productsPart 2: Determination of extrudability ofsealants using standardized apparatusBS EN ISO 8394-2:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 8394-2:2010, incorporating corrigendum May 2011. I
2、t is identical to ISO 8394-2:2010. Together with BS EN ISO 8394-1:2010, it supersedes BS EN 28394:1991 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/547, Sealants for building and construction.A list of organizations represented on this committee ca
3、n beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 75478 4ICS 91.100.50Compliance with a British Standard cannot confer immunity fromlegal obligation
4、s.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments/corrigenda issued since publicationDate Text affected30 June 2011 Implementation of CEN corrigendum May 2011:modification of EN title page and EN foreword EUROPEAN S
5、TANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8394-2 October 2010 ICS 91.100.50 Supersedes EN 29048:1990English Version Building construction - Jointing products - Part 2: Determination of extrudability of sealants using standardized apparatus (ISO 8394-2:2010) Construction immobilire - Produits po
6、ur joints - Partie 2: Dtermination de lextrudabilit des mastics au moyen dun appareil normalis (ISO 8394-2:2010) Hochbau - Fugendichtstoffe - Teil 2: Bestimmung der Verarbeitsbarkeit von Dichtstoffen mit genormtem Gert (ISO 8394-2:2010) This European Standard was approved by CEN on 30 September 2010
7、. CEN members are bound to comply 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
8、 application to the CEN 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 Management Ce
9、ntre has the same status as the 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, No
10、rway, Poland, Portugal, Romania, 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 for
11、m and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8394-2:2010: EIncorporating corrigendum May 20113 Foreword The text of ISO 8394-2:2010 has been prepared by Technical Committee ISO/TC 59 “Buildings and civil engineering works” of the International Organization for Stan
12、dardization (ISO) and has been taken over as EN ISO 8394-2:2010 by 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 t
13、ext or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. 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 responsibl
14、e for identifying any or all such patent rights. This document supersedes EN 29048:1990.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
15、 Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8394-2:2010
16、 has been approved by CEN as a EN ISO 8394-2:2010 without any modification. BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E) ISO 2011 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The wo
17、rk 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 non-governm
18、ental, 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. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The
19、main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
20、Attention is drawn to 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. ISO 8394-2 was prepared by Technical Committee ISO/TC 59, Building construction, Subcommittee SC 8, J
21、ointing products. ISO 8394 consists of the following parts, under the general title Building construction Jointing products: Part 1: Determination of extrudability of sealants Part 2: Determination of extrudability of sealants using standardized apparatus This first edition of ISO 8394-2, together w
22、ith ISO 8394-1, cancels and replaces ISO 8394:1988, which has been technically revised. BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E)BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E)INTERNATIONAL STANDARD ISO 2011 All rights reserved 1Building construction Jointing products Part 2: Determination of extrudab
23、ility of sealants using standardized apparatus 1 Scope This part of ISO 8394 specifies a method for determining the extrudability of sealants independently of the package in which they are supplied. It is not applicable to the classification of sealants. 2 Normative references The following referenc
24、ed documents are 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. ISO 6927, Building construction Jointing products Sealants Vocabulary 3
25、 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 6927 apply. 4 Principle The tested sealant is filled in a standardized apparatus. The sealant is extruded under defined conditions. The mass of the extruded sealant is determined. This part of ISO 8394 s
26、pecifies 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 test report. The comparison of results is possible, only if
27、 all the test conditions are the same. 5 Apparatus 5.1 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 ml and with an orifice diameter from 2 mm to 10 mm, as a
28、greed on by the parties concerned (see Figures 1 and 2). BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E)2 ISO 2011 All rights reserved5.3 Compressed air, up to 700 kPa. 5.4 Stopwatch, accurate to 0,1 s. 5.5 Balance, accurate to 0,1 g. 6 General Perform all the measurements under the same conditions (sam
29、e 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 tests; 2) for each extrusion test, use one standardized apparatus. b) Multi-component sealan
30、ts: 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 extrusion tests (with three standardized apparatus for each of the three different times)
31、. 7 Preparation of the standardized apparatus Select 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 plunger and ring of the standardized apparatus and insert in the cylinder, with the rin
32、g towards the orifice. 8 Conditioning of the sealant 8.1 General Condition 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 testing. The default conditioning temperature is (23 2) C. This test temperatur
33、e 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 sealants Fill the cylinder of the standardized apparatus with the sealant, avoiding the formation of air bubbles. 8.3 Multi-component sealants Follow the instructions of the sealant m
34、anufacturer concerning the mixing procedure of the sealant. BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E) ISO 2011 All rights reserved 3Using the instructions of the sealant manufacturer, calculate the extrusion times corresponding to: the quarter of pot life at the corresponding testing temperature,
35、the middle of pot life at the corresponding testing temperature, and the third quarter of pot life at the corresponding testing temperature. Fill the cylinder of the standardized apparatus with the multi-component sealant, avoiding the formation of air bubbles. 9 Test procedure 9.1 General The measu
36、rements 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 pressure as agreed on by the parties concerned. Extrude a
37、 sufficient quantity of sealant to remove the air from the orifice. 9.2 Single-component sealants Immediately, 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 quantity of sealant coming out of the orifice after the
38、 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. Condition the cylinder in the regulated enclosure, during t
39、he 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 balance (5.5). 9.3 Multi-component sealants Extru
40、de 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 shall not be empty after these three extrusions. Pl
41、ace 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). BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E)4 ISO 2011 All rights reserved10 Expression of results 10.1 Extrusion rate, ex
42、pressed as mass per minute The result of each measurement, expressed in grams of extruded sealant per minute, is rounded to the nearest gram, using Equation (1): m60mEt=(1) where Emis the extrusion rate of the sealant, expressed in grams per minute; m is the mass of the extruded sealant, expressed i
43、n 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 minute If needed, the result may be expressed in millilitres of extruded sealant per minute, rounded to
44、the nearest millilitre, using Equation (2): mvEED= (2) where Evis 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 sealant. Calculate the mean
45、 value of the three values of Ev, rounded to the nearest millilitre per minute. 10.3 Multi-component sealants Plot the graph mean value of Em= 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 re
46、port The test report shall contain the following information: a) a reference to this part of ISO 8394, i.e. ISO 8394-2:2010; 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; BS EN ISO 8394-2:2010EN ISO 8394-2:20
47、10 (E) ISO 2011 All rights reserved 5e) the conditioning temperature; f) the volume of the cylinder and the diameter of the orifice; g) the pressure of extrusion; h) the time of extrusion; i) the result of each extrusion, in grams per minute, and the mean value; j) the result of each extrusion, in m
48、illilitres per minute, the mean value and the density, if necessary; k) the graph of Em= f (time elapsed from mixing), for the multi-component sealants; l) any deviation from this part of ISO 8394. Dimensions in millimetres Key 1 cylinder 2 piston 3 ring 4 orifice cap 5 slide bar 6 orifice plate, d
49、= 2 mm, or d = 4 mm, or d = 6 mm, or d = 10 mm 7 countersunk head screw: ISO 2009 - M3 6 - 4,8 8 parallel pin: ISO 2338 - 6 8 9 coupling with pipe thread: ISO 228-1 - G 3/8 10 gasket, outer diameter 60 mm, material 25 mm 2 mm 11 bottom cap al = 182 mm for 250 ml test volume; l = 262 mm for 400 ml test volume. bCopper-zinc alloy. cStainless steel. dNeoprene. Figure 1 Extrusion device BS EN ISO 8394-2:2010EN ISO 8394-2:2010 (E)6 ISO 2011 All rights reservedDimensions in millimetres a) Cylinder b)
