1、 Reference number ISO 28728-1:2011(E) ISO 2011INTERNATIONAL STANDARD ISO 28278-1 First edition 2011-12-01 Glass in building Glass products for structural sealant glazing Part 1: Supported and unsupported monolithic and multiple glazing Verre dans la construction Produits verriers pour vitrage extrie
2、ur coll Partie 1: Vitrages monolithiques ou multiples, supports ou non supports ISO 28728-1:2011(E) COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
3、including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Pu
4、blished in Switzerland ii ISO 2011 All rights reservedISO 28728-1:2011(E) ISO 2011 All rights reserved iiiContents Page Foreword iv 1 Scope 1 2 Normative references 1 3 Terms and definitions . 2 4 Symbols and abbreviated terms 6 5 Principle . 8 6 Required characteristics of glass products . 10 6.1 A
5、ppropriate glass products . 10 6.2 Dimensional tolerances 11 6.3 Glass shapes . 12 6.4 Corners, notches and holes . 12 7 Verification of the suitability of glass products for use in SSG systems when exposed to ultra-violet (UV) radiation 13 7.1 General . 13 7.2 Insulating glass unit (IGU) 13 7.3 Lam
6、inated glass or monolithic glass Situation 3 (see Figure 3) . 15 7.4 Assessment of the adhesion between the sealant and the glass 15 8 Design . 16 8.1 Calculation of the thickness of the glass 16 8.2 Calculation of the height of the outer sealant of the IGU for supported and unsupported glazing 16 8
7、.3 Calculation of the height of the outer sealant of the IGU for unsupported glazing . 20 Annex A (informative) Assembly requirement . 21 Annex B (normative) Structural and/or ultra-violet (UV) -resistant sealant (for use with structural sealant glazing and/or IGUs with exposed seals) 26 Annex C (no
8、rmative) Evaluation of tests results . 42 Annex D (normative) Shear at 23 C Test method 46 Annex E (normative) Factory production control (FPC) requirements for sealants 48 Annex F (normative) Outer seal of an IGU Category differentiation . 53 Annex G (normative) Formation of bubbles . 56 Annex H (i
9、nformative) Sealing, structural bonding and UV resistance schematic illustrations 57 Annex I (normative) Initial testing of the bonding of sealant to a non-glass substrate 60 Bibliography 62 ISO 28728-1:2011(E) iv ISO 2011 All rights reservedForeword ISO (the International Organization for Standardi
10、zation) is a worldwide federation of national standards bodies (ISO member bodies). 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 b
11、e represented on that committee. International organizations, governmental and non-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. International Standa
12、rds are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The 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 Inter
13、national Standard requires approval by at least 75 % of the member bodies casting a vote. 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 28728-1
14、 was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 2, Use considerations. ISO 28728 consists of the following parts, under the general title Glass in building Glass products for structural sealant glazing: Part 1: Supported and unsupported monolithic and multiple gla
15、zing Part 2: Assembly rules INTERNATIONAL STANDARD ISO 28728-1:2011(E) ISO 2011 All rights reserved 1Glass in building Glass products for structural sealant glazing Part 1: Supported and unsupported monolithic and multiple glazing 1 Scope This part of ISO 28278 specifies requirements for the suitabi
16、lity of supported and unsupported glass products (see Figure 1) for use in the structural sealant glazing (SSG) technique. Regarding glass products, this part of ISO 28278 constitutes a supplement to the requirements specified in the corresponding ISO standards with regard to verifying suitability f
17、or use in SSG systems. Only soda lime silicate glass is taken into consideration in this part of ISO 28278. The glass products are installed and bonded into the support under controlled environmental conditions, as described in ISO 28278-2. Plastic glazing is excluded from the scope of this part of
18、ISO 28278. The structural, weatherproofing and sealant and outer seal of insulating glass unit (IGU) products, which are commonly used in structural glazing applications, are those based on organo-siloxane, “silicone” polymers, and recommended for use by the sealant manufacturer. Where there is a ri
19、sk of earthquake, the sealant design may not be sufficient to resist the loads, and complementary arrangements may be necessary. This part of ISO 28278 does not preclude the use of other sealant types where these can demonstrate suitability for service according to this part of ISO 28278 and when us
20、ed following the recommendations of the sealant manufacturer. 2 Normative references The following referenced 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
21、(including any amendments) applies. ISO 527-3:1995, Plastics Determination of tensile properties Part 3: Test conditions for films and sheets ISO 868:2003, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness) ISO 1183-1:2004, Plastics Methods for determ
22、ining the density of non-cellular plastics Part 1: Immersion method, liquid pyknometer method and titration method ISO 3231:1993, Paints and varnishes Determination of resistance to humid atmospheres containing sulfur dioxide ISO 7389, Building construction Jointing products Determination of elastic
23、 recovery of sealants ISO 28728-1:2011(E) 2 ISO 2011 All rights reservedISO 9227:2006, Corrosion tests in artificial atmospheres Salt spray tests ISO 10563:2005, Building construction Sealants Determination of change in mass and volume ISO 11358-2, Plastics Thermogravimetry (TG) of polymers Part 2:
24、Determination of activation energy ISO 11600, Building construction Jointing products Classification and requirements for sealants ISO 12543 (all parts), Glass in building Laminated glass and laminated safety glass ISO 16269-6, Statistical interpretation of data Part 6: Determination of statistical
25、tolerance intervals ISO 20492 (all parts), Glass in buildings Insulating glass ISO 28278-2:2010, Glass in building Glass products for structural sealant glazing Part 2: Assembly rules ASTM C 1184:2000, Standard Specification for Structural Silicone Sealants ASTM C 1265:2005, Standard Test Method for
26、 Determining the Tensile Properties of an Insulating Glass Edge Seal for Structural Glazing Applications 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. NOTE Figure 1 is included only as an aid to explaining the terminology used in this Internati
27、onal Standard. The components indicated in broken and dotted lines are covered by other technical specifications such as ETAG 002 or standards concerned with curtain wall faades. 3.1 structural sealant glazing SSG assembly in which glass products are fixed to the structural seal frame by means of a
28、sealant that has been shown to be capable of withstanding the load actions applied to the glass products of the structural seal frame 3.2 anchorage anchorage of the structural seal support frame on the framework NOTE See (1) in Figure 1. 3.3 backer rod pre-formed continuous strip that limits the sec
29、tion and height of a fillet of weather sealant NOTE See (2) in Figure 1. 3.4 hermetic seal bite dimension of the second barrier of the hermetic seal measured parallel to the glass unit at the panel level NOTE See (3) in Figure 1. 3.5 faade framework members to which the structural seal support frame
30、 is connected and which transmit the loads to the building NOTE See (4) in Figure 1. ISO 28728-1:2011(E) ISO 2011 All rights reserved 3Key 1 anchorage 8 self-weight mechanical support 2 backer rod 9 weather seal 3 height of the outer seal 10 setting blocks 4 faade framework 11 adhesive spacer 5 fini
31、shing material 12 structural seal 6 hermetic seal 13 structural seal adhesion surface 6a (inner seal) 14 structural seal support frame 6b (outer seal) 15 anti-adhesive film 6c outer seal adhesion surface 16 retaining device 7 glass unit Figure 1 Terminology ISO 28728-1:2011(E) 4 ISO 2011 All rights
32、reserved3.6 finishing material elastomeric sealant extruded into the joint, of sufficient cross-section as to constitute a barrier to air and water when cured, or a pre-extruded gasket with a fin of sufficient cross-section NOTE See (5) in Figure 1 and (4) in Figure 3. 3.7 outer seal sealant intende
33、d to ensure a hermetic seal, providing a barrier to water and vapour penetration, and light, around the edge of an insulating unit whilst remaining compliant with displacements caused by wind or other loads NOTE 1 The hermetic seal is called “structural” (see 3.14) when it also has the supplementary
34、 function of adequately transmitting to the seal support frame the forces applied to the glass. NOTE 2 See (6b) in Figure 1 and (3) in Figure 3. 3.8 glass unit element consisting of a single glass pane (monolithic or laminated) or an insulating glass unit (IGU) specified for use in SSG NOTE 1 The IG
35、U may be one of two types: a unit with aligned edges for which the two panes have the same nominal dimensions, or a unit with stepped edges for which the two panes have different dimensions. NOTE 2 See Figure 2 and (7) in Figure 1. 3.9 insulating glass unit IGU pre-assembled unit comprising panes of
36、 glass that are sealed at the edges and separated by dehydrated space(s), intended for use in buildings 3.10 self-weight mechanical support element situated beneath the bottom edge of the glass unit that transmits the weight of the latter to the structural seal support frame NOTE See (8) in Figure 1
37、. 3.11 weather seal fillet of sealant or weather fin of adequate cross-section constituting a barrier to air and water NOTE See (9) in Figure 1. 3.12 setting blocks bearing elements situated between the self-weight mechanical support and the bottom edge of a glass unit used to position the glass uni
38、t in the structural seal support frame and to avoid a permanent shear load NOTE See (10) in Figure 1. 3.13 adhesive spacer continuous pre-formed strip defining the cross-section of the fillet of sealant and used to align the glass relative to the structural seal support frame NOTE See (11) in Figure
39、 1. ISO 28728-1:2011(E) ISO 2011 All rights reserved 53.14 structural seal joint of elastic structural sealant extruded between glass element or glass and framework which is, when cured, of adequate transverse cross-section as to transfer appropriate forces applied on the glass to the structural sea
40、l support frame NOTE See (12) in Figure 1 and (5) in Figure 3. 3.15 structural seal adhesion surface continuous surface of the glass or structural seal support frame to which the structural sealant bonds NOTE See (13) in Figure 1 and (6) in Figure 3. 3.16 structural seal support frame metallic eleme
41、nt to which the glass product is bonded NOTE See (14) in Figure 1. 3.17 anti-adhesive film film at the interface between two materials, used to prevent them bonding together NOTE See (15) in Figure 1. 3.18 retaining device piece intended to hold the glass product in place and therefore reduce any da
42、nger that may result in the event of a structural seal failure NOTE See (16) in Figure 1. 3.19 cohesive failure cohesive rupture rupture in a body of the sealant 3.20 adhesive failure adhesive rupture rupture at the interface between the sealant and the substrate 3.21 initial cure stage in the curin
43、g where the sealant has appropriate cohesive strength to resist different levels of action 3.22 creep factor shear design stress under permanent static load 3.23 initial type testing determination of the performance of a product (characteristics, durability), on the basis of either actual tests or o
44、ther procedures NOTE Other procedures include conventional, standardized, tabulated or generally accepted values, standardized or recognized calculation methods, and test reports when made available, in accordance with this International Standard. ISO 28728-1:2011(E) 6 ISO 2011 All rights reserved3.
45、24 test report document that covers the results of tests undertaken on a representative sample of the product from production or on a prototype design of the product 3.25 product description document that details the relevant parameters for defining a product that complies with its relevant standard
46、 NOTE It includes specific reference(s) to characteristics that are modified by the production process and by raw materials. 3.26 significant change variation in performance beyond the permitted tolerance for the characteristic 4 Symbols a length of the smaller dimension of the glass m A gglass area
47、 m 2b breadth of IGU air space mm b wwidth of the bead mm c height of sealant necessary for structural purposes: c (0,5p . a) /( mm e iinitial glass thickness per test piece for L omm E omodulus (tangent or secant) kPa F relevant combined load for wind, snow and self-weight Pa F sshear force Pa F t,
48、itensile loading Pa F meanaverage breaking force Pa h height of structural sealant mm h oheight of sealant as specified in ISO 20492-2 mm h uheight of the outer seal of the unsupported IGU mm K otangent stiffness at the origin kPa K secrigidity modulus/secant stiffness kPa K xstiffness of the sample
49、 at x % elongation in the initial state kPa K ystiffness of the sample at y % elongation after conditioning kPa L length of the loaded test piece mm L oinitial length of the test piece mm l svertical length of the outer seal mm l blength of the bead mm m number of observations per test piece n number of test pieces per test for the temperature concerned p relevant combined load of the wind, snow, climatic effects and self-weight kPa P uweight of the unsupported IGU
