【BS英国标准】BSEN572-1-2004建筑用玻璃.基本的钠钙玻璃制品.定义和一般物理及机械性能.doc

国内外标准大全豆丁网国内外标准下载地址 /kmust1british standard bs en572-1:2004incorporatingcorrigendum no. 1glass in building basic soda lime silicate glass products part 1: definitions and general physical and mechanical propertiesthe european standard en 572-1:2004 has the status of abritish standardics 01.040.81; 81.040.20 bs en 572-1:2004national forewordthis british standard is the official english language version of en 572-1:2004, including corrigendum september 2004. it supersedes bs en 572-1:1995 which is withdrawn.the uk participation in its preparation was entrusted by technical committee b/520, glass and glazing in building, to subcommittee b/520/1, basic and transformed glass products, which has the responsibility to:aid enquirers to understand the text;present to the responsible international/european committee any enquiries on the interpretation, or proposals for change, and keep the uk interests informed;monitor related international and european developments and promulgate them in the uk.a list of organizations represented on this subcommittee can be obtained on request to its secretary.cross-referencesthe british standards which implement international or european publications referred to in this document may be found in the bsi catalogue under the section entitled “international standards correspondence index”, or by using the “search” facility of the bsi electronic catalogue or ofbritish standards online.this publication does not purport to include all the necessary provisions of a contract. users are responsible for its correct application.compliance with a british standard does not of itself confer immunity from legal obligations.this british standard was published under the authority of the standards policy and strategy committeeon 1 july 2004 bsi 8 november 2004isbn 0 580 43998 4summary of pagesthis document comprises a front cover, an inside front cover, the en title page, pages 2 to 10, an inside back cover and a back cover.the bsi copyright notice displayed in this document indicates when the document was last issued.amd. no.datecomments15411corrigendum no. 18 november 2004correction to table 1amendments issued since publicationeuropean standard norme europenneeuropische normen 572-1june 2004ics 81.040.20; 01.040.81supersedes en 572-1:1994incorporating corrigendum september 2004english versionglass in building - basic soda lime silicate glass products - part1: definitions and general physical and mechanical propertiesverre dans la construction - produits de base : verre de silicate sodo-calcique - partie 1 : dfinitions et proprits physiques et mcaniques gnralesglas im bauwesen - basiserzeugnisse aus kalk- natronsilicatglas - teil 1: definitionen und allgemeine physikalische und mechanische eigenschaftenthis european standard was approved by cen on 1 april 2004.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 application to the central secretariat 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 central secretariat has the same status as the official versions.cen members are the national standards bodies of austria, belgium, cyprus, czech republic, denmark, estonia, finland, france, germany, greece, hungary, iceland, ireland, italy, latvia, lithuania, luxembourg, malta, netherlands, norway, poland, portugal, slovakia, slovenia, spain, sweden, switzerland and united kingdom.european committee for standardization c o m i t eur o p en de nor m a l i s a ti on eur o p i s c h es kom i tee f r nor m ung management centre: rue de stassart, 36 b-1050 brussels 2004 cenall rights of exploitation in any form and by any means reserved worldwide for cen national members.ref. no. en 572-1:2004: een 572-1: 2004 (e)contentspageforeword. 31scope . 42normative references . 43terms and definitions . 54general principles. 55chemical composition . 65.1general. 65.2tint . 66physical and mechanical characteristics. 66.1general characteristics . 66.2designation of clear glass . 76.2.1general. 76.2.2clear transparent glass . 76.2.3clear translucent glass . 86.3stability of physical and chemical characteristics. 96.4general quality criteria and their evaluation. 96.4.1optical . 96.4.2appearance . 9bibliography . 109forewordthis document (en 572-1:2004) has been prepared by technical committee cen/tc 129 glass in building, the secretariat of which is held by ibn.this document supersedes en 572-1:1994.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 december 2004, and conflicting national standards shall be withdrawn at the latest by december 2004.this document has been prepared under a mandate given to cen by the european commission and the europeanfree trade association, and supports essential requirements of eu directive(s).according to the cen/cenelec internal regulations, the national standards organizations of the following countries are bound to implement this european standard: austria, belgium, cyprus, czech republic, denmark, estonia, finland, france, germany, greece, hungary, iceland, ireland, italy, latvia, lithuania, luxembourg, malta, netherlands, norway, poland, portugal, slovakia, slovenia, spain, sweden, switzerland and united kingdom.1scopethis part of this european standard specifies and classifies basic glass products, indicates their chemical composition, their main physical and mechanical characteristics and defines their general quality criteria.specific dimensions and dimensional tolerances, description of faults, quality limits and designation for each basic product type are not included in this part, but are given in other parts of this standard specific to each product type:en 572-2float glassen 572-3polished wired glass en 572-4drawn sheet glass en 572-5patterned glassen 572-6wired patterned glassen 572-7wired or unwired channel shaped glassen 572-8supplied and final cut sizesen 572-9evaluation of conformity/product standard2normative referencesthe 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 (including any amendments) applies.en 410, glass in building determination of luminous and solar characteristics of glazingen 572-2, glass in building basic soda lime silicate glass products part 2: float glassen 572-3, glass in building basic soda lime silicate glass products part 3: polished wired glass en 572-4, glass in building basic soda lime silicate glass products part 4: drawn sheet glass en 572-5, glass in building basic soda lime silicate glass products part 5: patterned glassen 572-6, glass in building basic soda lime silicate glass products part 6: wired patterned glassen 572-7, glass in building basic soda lime silicate glass products part 7: wired or unwired channel shaped glassen 572-8, glass in building basic soda lime silicate glass products part 8: supplied and final cut sizesen 572-9, glass in building basic soda lime silicate glass products part 9: evaluation of conformity/product standardpren 13474, glass in building design of glass panes3terms and definitionsfor the purposes of this european standard, the following terms and definitions apply.3.1 floatflat, transparent, clear or tinted soda-lime silicate glass having parallel and polished faces obtained by continuous casting and floatation on a metal bathnotein french called glace and in german floatglas.3.2drawn sheet glassflat, transparent, clear or tinted soda-lime silicate glass obtained by continuous drawing, initially vertically, of a regular thickness and with the two surfaces fire polishednotedrawn sheet glass covers three products; new antique drawn sheet glass, drawn sheet glass for renovation and drawn sheet glass with minimum visual faults.3.3patterned glassflat, translucent, clear or tinted soda-lime silicate glass obtained by continuous casting and rolling3.4wired patterned glassflat, translucent, clear or tinted soda-lime silicate glass obtained by continuous casting and rolling which has a steel mesh welded at all intersections incorporated in the glass during its manufacturing process. the surfaces may be either patterned or plainnotein german wired patterned glass with plain surfaces is called drahtglas.3.5polished wired glassflat, transparent, clear soda-lime silicate glass having parallel and polished faces obtained by grinding and polishing the faces of wired patterned glass3.6wired or unwired channel-shaped glasstranslucent, clear or tinted soda-lime silicate glass, wired or unwired, obtained by continuous casting and rolling, which is formed into a u shape during the manufacturing process4general principlesen 572-1 shall be read in conjunction with parts 2 to 9 of this european standard.5chemical composition5.1generalthe basic glass products covered by this standard are all manufactured from soda-lime silicate glass.the magnitude of the proportions by mass of the principal constituents of soda-lime silicate glass covered by this standard is as follows:silicon dioxide (sio2)69 % to 74 % calcium oxide (cao) 5 % to 14 % sodium oxide (na2o)10 % to 16 % magnesium oxide (mgo) 0 % to 6 % aluminium oxide (al2o3) 0 % to 3 % others 0 % to 5 %in addition to the above general composition, these glasses may also contain small quantities of other substances.5.2tintbody tinted glass is obtained by the addition of suitable materials.6physical and mechanical characteristics6.1 general characteristicsconventional numerical values for the physical and mechanical characteristics of basic glass products are given in table 1. these values, for normal annealed glass without any further toughening are not precise requirements with which the glass shall strictly comply, but are the generally accepted figures for use in calculations where a high degree of accuracy is not required.table 1 general characteristic valuescharacteristicsymbolnumerical value and unitdensity (at 18 c) hardness (knoop) youngs modulus (modulus of elasticity) poissons ratiocharacteristic bending strengthspecific heat capacityaverage coefficient of linear expansion between 20 c and 300 cresistance against temperature differential and sudden temperature changethermal conductivitymean refractive index to visible radiation(380 nm to 780 nm)hk0,1/20fg,kcn2 500 kg/m36gpa7 1010 pa0,245 x 106 pa a0,72 103 j/(k g k) 9 10-6 k-140 k b1 w/(m k) 1,5emissivity (corrected)0,837a the characteristic bending strength shall be used in conjunction with the design method given in pren 13474.b generally accepted value that is influenced by edge quality and glass type.6.2 designation of clear glass6.2.1generala glass product is designated as clear glass when it is not tinted and when the light transmittance of the glass material unmodified by the possible presence of a coating or surface roughness of, for example, a patterned glass complies with 5.2.2 and 5.2.3.in order to measure the light transmittance characteristics of glass, to determine whether it can be designated as a clear glass, it is necessary, in some cases, to carry out a pretreatment: coatings on smooth surfaces have to be eliminated, without modifying the thickness of the glass substrate; rough surfaces, with or without coatings, have to be eliminated by smoothing and polishing. the thickness of the glass will be modified by this process.the light transmittance of the glass substrate shall be measured with its surfaces in a polished condition.notethe light transmittance values given in 5.2.2 and 5.2.3 are not suitable for design. they are values used only for the designation of clear glass and exclude the effects of coatings and of surface roughness. the values of light transmittance used for design can be obtained from the glass manufacturer. they are determined in accordance with en 4clear transparent glassa transparent glass product is designated as clear glass when it is not tinted and when its light transmittance: after any necessary pretreatment; measured according to en 410; and rounded to the nearest 0,01;is greater than or equal to the value given in table 2 for the nominal thickness of the glass product.notethe limiting value given in table 2 is appropriate provided that the measured thickness of the glass product is within the allowable tolerances for the nominal thickness of that glass product.table 2 minimum light transmittance values for designating a transparent glass product as clear glassnominal thickness in mmminimum value of light transmittance23456810121519250,890,880,870,860,850,830,810,790,760,720,676.2.3clear translucent glassa translucent glass product is designated as clear glass when it is not tinted and when its light transmittance: after any necessary pretreatment; measured according to en 410; and rounded to the nearest 0,01;is greater than or equal to the value obtained by linear interpolation from table 3, for the measured thickness of the specimen.notethe limiting value will vary with the exact thickness of the specimen after its pretreatment.table 3 minimum light transmittance values for designating a translucent glass product as clear glassthickness in mmminimum value of light transmittance345678100,830,820,810,800,790,780,766.3 stability of physical and chemical characteristicsfor basic glass products, the physical and chemical characteristics can be considered as remaining constant over time.a) since glass is insensitive to photochemical effects, the spectral properties (transmission of light and solar energy) of the basic glass products are not modified by direct or indirect