1、Designation: E2098 00 (Reapproved 2006)E2098/E2098M 13Standard 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 de
2、signation E2098;E2098/E2098M; the number immediately following the designation indicatesthe year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. A superscript epsilon () indicates an editorial change since the
3、 last revision or reapproval.1. Scope1.1 This test method covers procedures for determining the breaking force of glass fiber mesh following their conditioning inan alkali solution. The method is applicable to glass fiber mesh used in Class PB Exterior Insulation and Finish Systems (EIFS)with base c
4、oats that contain portland cement as an ingredient.1.2 Breaking force is expressed both as force per unit width of mesh and as a percentage of the breaking force of the mesh thathas not been exposed to alkali conditioning.1.3 The values stated in either SI units or inch-pound units are to be regarde
5、d separately as the standard. The values given inparentheses are for information only.stated in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result in non-conformance with the standard.1.4 This sta
6、ndard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 AS
7、TM Standards:2D76D76/D76M Specification for Tensile Testing Machines for TextilesD579D579/D579M Specification for Greige Woven Glass FabricsD5035 Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method)E631 Terminology of Building ConstructionsE2110 Terminology for Exterior In
8、sulation and Finish Systems (EIFS)2.2 Other Documents:3EIFS Industry Members Association (EIMA) Guideline Specification for Exterior Insulation and Finish Systems (EIFS), ClassPB3. Terminology3.1 For general terminology regarding EIFS and building in general, see Terminology E2110 (for EIFS terms) a
9、nd TerminologyE631 (for buildings in general).4. Summary of Test Method4.1 Specimens are tested for breaking force with and without conditioning. Conditioning is immersion for 28 days in an aqueoussolution of 5%5 % sodium hydroxide.1 This test method is under the jurisdiction ofASTM Committee E06 on
10、 Building ConstructionsPerformance of Buildings and is the direct responsibility of SubcommitteeE06.58 on Exterior Insulation and Finish Systems (EIFS).Current edition approved Sept. 1, 2006Sept. 1, 2013. Published September 2006September 2013. Originally approved in 2000. Last previous edition appr
11、oved in 20002006as E2098 00.E2098 00 (2006). DOI: 10.1520/E2098-00R06.10.1520/E2098_E2098M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document
12、Summary page on the ASTM website.3 Available from the EIFS Industry MEmbers Association (EIMA) 3000 Corporate Center Drive, Suite 270 Morrow, Georgia 30260.Members Association (EIMA), 513West Broad Street, Suite 210, Falls Church, VA 22046-3257, http:/.This document is not an ASTM standard and is in
13、tended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the cur
14、rent versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2 Breaking force is determined by mounting a test specimen in a tensile testing machine and a
15、pplying a force to the specimenuntil it breaks.5. Significance and Use5.1 Glass fiber reinforcing meshes are used to strengthen EIFS. The reinforcing meshes are embedded into base coats thatcontain portland cement, which potentially exposes the glass fibers in the reinforcing meshes to weakening by
16、the action of alkali.The breaking force following alkali exposure as determined by this method, is a factor used to comparatively evaluate the alkaliresistance of EIFS glass fiber reinforcing meshes in the laboratory.5.2 This test method does not purport to simulate the conditions that may be encoun
17、tered in service. The performance of anEIFS is a function of many factors, such as proper installation, rigidity of supporting construction and resistance of the EIFS todeterioration by other causes.6. Apparatus and Reagents6.1 Tensile Testing Machine, of the controlled rate of extension type, as de
18、fined in Specification D76D76/D76M, clumps andjaw faces conforming to those in Test Method D5035.6.2 Container and container cover for alkali solutionmaterial inert to alkali of suitable dimensions to permit unbent meshspecimens to be fully covered with a depth of 25 mm (1 in.)1 in. of alkali soluti
19、on. The cover for the container shall be of suitabledesign to prevent evaporative loss from the solution which would increase its concentration.6.3 Distilled water6.4 Reagent Grade Sodium Hydroxide7. Sampling7.1 Laboratory Samplefrom a sample roll, cut 30 specimens 50 6 3 mm (2 in.)2 in. wide at lea
20、st 600 mm 6 13 mm (24in.)24 in. long; 15 specimens with their long dimensions parallel to the machine (warp) direction, and 15 specimens with theirlong dimensions parallel to the cross (fill) direction.7.2 The actual number of yarns shall be equal within the width dimensional tolerance allowed (6 3
21、(63 mm 18 in.), and theactual number of yarns shall be reported.7.3 Specimens shall be spaced across the width of the fabric to ensure representation of different warp yarns. Fill specimensshall be from widely spaced locations within the sample roll.8. Preparation of Specimens8.1 Number each specime
22、n at both ends and then cut the specimens in half crosswise to provide one set for determining theconditioned breaking force and another set for determining the unconditioned breaking force. This allows for breaks on pairedspecimens which leads to more direct comparison of alkali conditioned versus
23、unconditioned breaking force.9. Alkali Conditioning of Specimens9.1 Record the number of and placement of each specimen so that, following conditioning, the breaking force value of eachconditioned specimen may be associated with the breaking force value of the unconditioned specimen from the same 50
24、 by 600mm (2 2 by 24 in.)in. strip. Markings may be destroyed by the alkali exposure. Any specimen tags used shall not be reactivewith the alkali solution.9.2 Prepare a 5%5 % (50 g/L 6.68 oz/gal) sodium hydroxide solution and place it in the conditioning container to a depthsufficient to cover the s
25、pecimens with 25 mm of solution (1 in.).1 in. of solution. Maintain the solution at 2222 6 3C (72726 5F).5F.9.3 Immerse in the solution one 50 xby 300 mm (2 2 by 12 in.)in. specimen strip from each pair cut from the 50 xby 600mm (2 2 by 24 in.)in. strips. Cover the strips by 25 mm (1 in.)1 in. of so
26、lution. The strips shall be straight. If the strips havea tendency to curl, they may be weighted at the ends by small weights inert to the solution, such as ceramic tile fragments. Coverthe solution container with a tight cover and mark the solution level on the container. Self clinging plastic wrap
27、 may be used. Ifthe solution level drops from evaporative loss, discontinue test.9.4 Condition specimens in the solution for 28 days.9.5 Following the 28 day conditioning, remove specimens, rinse briefly in distilled water, and dry for 7 days at 22 6 3C(7272 6 5F)5F and relative humidity of 50 6 5%.
28、5 %.9.6 Maintain the specimens not being conditioned at ambient laboratory room temperature of 22 6 3 (723C 72 6 5F)5Fand a relative humidity of 50 6 5%.5 %.E2098/E2098M 13210. Preparation of Tensile Testing Machine10.1 Prepare tensile testing machine in accordance with Test Method D5035 Section 10.
29、11. Procedure11.1 A resin may be applied to the ends of the specimens to make “tabs” to prevent slippage and jaw breaks during breakingas defined in Specification D579D579/D579M.11.2 Mount the specimen securely with 200 mm (8 in.)8 in. of separation between the grips.11.3 Operate the machine to exte
30、nd the specimen at the rate of 100 mm (4 in.)4 in. per minute until the specimen breaks.11.4 Record the breaking force (N/50 mm lbf/2 in.).11.5 If specimen slips in the jaw, or breaks at the edge of, or in the jaws, discard the result and take another specimen. Continueuntil 5five acceptable breaks
31、have been obtained for each of:(a) Unconditioned specimens with their long direction parallel to the warp.(b) Conditioned specimens with their long direction parallel to the warp.(c) Unconditioned specimens with their long direction parallel to the fill.(d) Conditioned specimens with their long dire
32、ction parallel to the fill.NOTE 1The fragile nature of the specimens and the resultant test variability will make it obvious to the operator when a sample is itself defectiveor has been damaged by the testing process. Results of such samples should not be used.12. Calculation or Interpretation of Re
33、sults12.1 Breaking Forcefor each of the four test configurations from 10.511.5 calculate the average breaking force observed forthe five acceptable specimens. Calculate average breaking force as the ratio of conditioned to unconditioned breaking force, forboth the warp and fill directions separately
34、 as follows:SC1U1D1SC2U2D1SC3U3D1SC4U4D1SC5U5D53100% (1)SC1U1D1SC2U2D1SC3U3D1SC4U4D1SC5U5D53100% (1)where:C1 through C5 are the breaking forces for 5five acceptable conditioned specimens, and U1 through U5 are the breaking forcesfor the 5five acceptable unconditioned specimens.13. Report13.1 Report
35、the following information:13.1.1 Date(s) of test and date of report.13.1.2 Identification of specimen by manufacturers brand or trade name.13.1.3 Number of yarns for each sample.13.1.4 Weight in g/m2 (oz/sq.yd)oz/yd2 of glass fiber mesh prior to alkali conditioning.13.1.5 Average breaking force in N
36、/50 mm (lbf/2 in.)lbf/2 in. for:(a) Unconditioned warp direction specimens(b) Conditioned warp direction specimens(c) Unconditioned fill direction specimens(d) Conditioned fill direction specimens13.1.6 Breaking force of the conditioned warp direction as a percentage of the breaking force of the unc
37、onditioned warpdirection.13.1.7 Breaking force of the conditioned fill direction as a percentage of the breaking force of the unconditioned fill direction.13.1.8 A statement that the tests were conducted in accordance with this method, or a complete description of any deviationfrom this method.14. P
38、recision and Bias14.1 The precision and bias of this test method have not been established.E2098/E2098M 13315. Keywords15.1 alkali; breaking strength; exterior insulation and finish systems; glass fiber reinforcing mesh; tensileASTM International takes no position respecting the validity of any pate
39、nt rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision
40、at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your commen
41、ts will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted
42、by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).E2098/E2098M 134
