1、Designation:E2098/E2098M13Standard Test Method forDetermining Tensile Breaking Strength of Glass FiberReinforcing Mesh for Use in Class PB Exterior Insulationand Finish Systems(EIFS),after Exposure to a SodiumHydroxide Solution1This standard is issued under the fixed designation E2098/E2098M;the num
2、ber immediately following the designation indicates the yearof original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 Th
3、is test method covers procedures for determining thebreaking force of glass fiber mesh following their conditioningin an alkali solution.The method is applicable to glass fibermesh used in Class PB Exterior Insulation and Finish Systems(EIFS)with base coats that contain portland cement as aningredie
4、nt.1.2 Breaking force is expressed both as force per unit widthof mesh and as a percentage of the breaking force of the meshthat has not been exposed to alkali conditioning.1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach
5、system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is therespon
6、sibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D76/D76M Specification for Tensile Testing Machines forTextilesD579/D579M Specification for Gr
7、eige Woven Glass FabricsD5035 Test Method for Breaking Force and Elongation ofTextile Fabrics(Strip Method)E631 Terminology of Building ConstructionsE2110 Terminology for Exterior Insulation and Finish Sys-tems(EIFS)2.2 Other Documents:3EIFS Industry Members Association(EIMA)GuidelineSpecification f
8、or Exterior Insulation and Finish Systems(EIFS),Class PB3.Terminology3.1 For general terminology regarding EIFS and building ingeneral,see Terminology E2110(for EIFS terms)and Termi-nology E631(for buildings in general).4.Summary of Test Method4.1 Specimens are tested for breaking force with and wit
9、h-out conditioning.Conditioning is immersion for 28 days in anaqueous solution of 5%sodium hydroxide.4.2 Breaking force is determined by mounting a test speci-men in a tensile testing machine and applying a force to thespecimen until it breaks.5.Significance and Use5.1 Glass fiber reinforcing meshes
10、 are used to strengthenEIFS.The reinforcing meshes are embedded into base coatsthat contain portland cement,which potentially exposes theglass fibers in the reinforcing meshes to weakening by theaction of alkali.The breaking force following alkali exposureas determined by this method,is a factor use
11、d to comparativelyevaluate the alkali resistance of EIFS glass fiber reinforcingmeshes in the laboratory.5.2 This test method does not purport to simulate theconditions that may be encountered in service.The perfor-mance of an EIFS is a function of many factors,such as properinstallation,rigidity of
12、 supporting construction and resistanceof the EIFS to deterioration by other causes.1This test method is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.58on Exterior Insulation and Finish Systems(EIFS).Current edition appr
13、oved Sept.1,2013.Published September 2013.Originallyapproved in 2000.Last previous edition approved in 2006 as E2098 00(2006).DOI:10.1520/E2098_E2098M-13.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStand
14、ards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the EIFS Industry Members Association(EIMA),513 WestBroad Street,Suite 210,Falls Church,VA 22046-3257,http:/.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 194
15、28-2959.United States1 6.Apparatus and Reagents6.1 Tensile Testing Machine,of the controlled rate ofextension type,as defined in Specification D76/D76M,clumpsand jaw faces conforming to those in Test Method D5035.6.2 Container and container cover for alkali solutionmaterial inert to alkali of suitab
16、le dimensions to permit unbentmesh specimens to be fully covered with a depth of 25 mm 1in.of alkali solution.The cover for the container shall be ofsuitable design to prevent evaporative loss from the solutionwhich would increase its concentration.6.3 Distilled water6.4 Reagent Grade Sodium Hydroxide7.Sampling7.1 Laboratory Samplefrom a sample roll,cut 30 speci-mens 50 6 3 mm 2 in.wide at least 600 mm 6 13 mm 24in.long;15 specimens with their long dimensions parallel tothe machine(warp)directio