1、Designation:C 669 00Standard Specification forGlazing Compounds for Back Bedding and Face Glazing ofMetal Sash1This standard is issued under the fixed designation C 669;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、 revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This specification covers glazing compounds f
3、or appli-cation on any metal sash for back bedding and face glazing forexterior or interior exposure.This specification does not applyto materials for use in channel or stop glazing.1.2 The following safety hazards caveat pertains only to thetest method described in this specification.This standard
4、doesnot purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.1.3 The committee with jurisdiction over
5、 this standard is notaware of any comparable standard published by other organi-zations.2.Referenced Documents2.1 ASTM Standards:C 717 Terminology of Building Seals and Sealants2C 797 Practices and Terminology for Use of Oil-andResin-Based Putty and Glazing Compounds2D 2249 Test Method for Predictin
6、g the Effect of Weatheringon Face Glazing and Bedding Compounds on Metal Sash2D 2376 Test Method for Slump of Face Glazing and Bed-ding Compounds on Metal Sash2D 2451 Test Method for Degree of Set for Glazing Com-pounds on Metal Sash22.2Federal Specifications:3RR-S-366E,Sieve,Test3.Terminology3.1 De
7、finitionsRefer to Terminology C 717 for definitionsof the following terms:adhesive failure(loss of adhesion),bedding,compound,cured,face glazing.4.Manufacture4.1 The manufacturing process shall ensure a homogeneousmix,free of defects that will affect serviceability,and of aconsistency suitable for a
8、pplication by hand or hand tool,without special preparation.5.Requirements5.1 CompositionThe glazing compound shall consist ofuniform mixtures of pigments,homogeneously mixed in suit-able oils or resinous vehicles,or both.The pigment shall befree of refractory particles larger than 50-mesh fine,othe
9、r thanasbestos fibers;shall be free of lumps;and shall have thestructural and physical characteristics necessary to provide thespecified physical properties(see 7.5).5.2 Working PropertiesThe glazing compound after thor-ough working in the hands shall have a smooth and uniformquality;shall work read
10、ily and smoothly under a knife,withoutcrumbling or cracking;and after being molded into place,shallhold its shape until set.5.3 ColorUnless otherwise specified,the color shall be inthe range of the commercial natural and gray shades of glazingcompounds.Tinting or coloring pigments,if used,shall be o
11、fsuch quality and color to match a sample mutually agreed uponby purchaser and seller.5.4 Degree of Set of Cured Compound The compoundshall show a minimum penetration of 20 and a maximumpenetration of 120 tenths of a millimetre.5.5 Accelerated Weathering Tests:5.5.1 Surface Cracking and PeelingThe c
12、ompound shallshow no surface cracking or peeling greater than illustrated byNo.5 of Fig.1.5.5.2 Deep-Bead CrackingThe compound shall show nodeep-bead cracking greater than illustrated by No.5 of Fig.2.5.5.3 Loss of AdhesionThe compound shall show no lossof adhesion greater than illustrated by Nos.4
13、and 5 of Fig.3.NOTE1Some slight degree of loss of adhesion is permissible in thetest specimen due to the difficulty in the preparation of the specimen.Thiscondition would not be encountered when glazing compound is appliedunder field conditions,such as a full sash,rather than a single Muntin Bar.5.5
14、.4 WrinklingThe compound shall show no wrinklinggreater than illustrated by Nos.4 and 5 of Fig.4.1This specification is under the jurisdiction of ASTM Committee C-24 onBuilding Seals and Sealants,and is the direct responsibility of SubcommitteeC24.12 on Oil and Resin Base Glazing and Caulking Sealan
15、ts.Current edition approved June 10,2000.Published July 2000.Originallypublished as C 669 70.Last previous edition C 669 95.2Annual Book of ASTM Standards,Vol 04.07.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.1Copyright
16、ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.5.5.5 Oil ExudationThe compound shall show no oilexudation greater than illustrated by No.5 of Fig.5.5.6 SlumpThe compound shall show no sagging orslumping.6.Sampling6.1 Select at random a single previously unopened con-tainer.Thoroughly mix the compound before with
