1、Designation:D532298(Reapproved 2009)Standard Practice forLaboratory Immersion Procedures for Evaluating theChemical Resistance of Geosynthetics to Liquids1This standard is issued under the fixed designation D5322;the number immediately following the designation indicates the year oforiginal adoption
2、 or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers laboratory immersion proceduresfor the testing of geosynthetic
3、s for chemical resistance to liquidwastes,prepared chemical solutions,and leachates derivedfrom solid wastes.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to address all of thesafety conc
4、erns,if any,associated with its use.It is theresponsibility 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.For specific hazardsstatements,see Section 7.2.Referenced Documents2.1 ASTM Standards
5、:2D123 Terminology Relating to TextilesD471 Test Method for Rubber PropertyEffect of LiquidsD543 Practices for Evaluating the Resistance of Plastics toChemical ReagentsD4439 Terminology for GeosyntheticsD5747 Practice for Tests to Evaluate the Chemical Resis-tance of Geomembranes to Liquids2.2 Other
6、 Document:SW 846,Method 9090 Compatibility Test for Wastes andMembrane Liners33.Terminology3.1 Definitions:For definitions of many terms used in thispractice,refer to Terminologies D123 and D4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 chemical resistancethe ability to resist chemic
7、alattack.3.2.1.1 DiscussionThe attack is dependent on the testmethod,and its severity is measured by determining thechanges in physical properties.Time,temperature,stress,andreagent may all be factors affecting the chemical resistance ofa material.3.2.2 geosynthetic,na planar product manufactured fr
8、ompolymeric material used with soil,rock,earth,or other geo-technical engineering-related material as an integral part of aman-made project,structure,or system.4.Significance and Use4.1 This practice provides a standard immersion procedurefor investigating the chemical resistance of a geosynthetic t
9、o aliquid waste,leachate,or chemical.The conditions specified inthis practice are intended both to provide a basis of standard-ization and to serve as a guide for those wishing to compare orinvestigate the chemical resistance of a geosynthetic materi-al(s).4.2 This practice is not intended to establ
10、ish,by itself,thebehavior of geosynthetics when exposed to liquids.Suchbehavior,referred to as chemical resistance,can be definedonly in terms of specific chemical solutions and methods oftesting and evaluation criteria selected by the user.4.3 Without regulatory approval,this practice does notsuper
11、sede testing requirements,such as SW 846,Method 9090,stipulated by regulatory agencies.5.Apparatus5.1 Exposure Tank,for containment of the solution and testmaterial.The tank must be chemically resistant and imperme-able to the solution being used.Stainless steel or glass isrecommended.Glass should n
12、ot be used with strongly basicsolutions.5.1.1 The size of the exposure tank is not specified since thevolume of liquid to be used with any given amount ofimmersed geosynthetic has not been standardized by ASTM orspecified by the Environmental Protection Agency at the timeof the writing of this pract
13、ice.Sufficient liquid must be used toensure the presence of any potentially detrimental chemicals1This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-thetics and is the direct responsibility of Subcommittee D35.02 on EnduranceProperties.Current edition approved June 1,2009.Publis
14、hed July 2009.Originally approvedin 1992.Last previous edition approved in 2003 D5322 98(2003).DOI:10.1520/D5322-98R09.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to th
15、e standards Document Summary page onthe ASTM website.3Available from US EPA,Office of Solid Waste and Emergency Response,TestMethods for Evaluating Solid Waste,Physical/Chemical Methods.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 thro
16、ughout the immersion.If sufficiently large exposure tanksare not possible,or if it is suspected that trace amounts ofchemicals may be depleted from the liquid during the expo-sure,smaller tanks may be used if the immersion liquid isreplaced with fresh solution after each test period.5.2 Exposure Tank Lid,for sealing the tank.In order toprevent the loss of volatile components of interest,the tankmust be capable of being sealed with a chemically resistantmaterial.5.2.1 Unless otherwise specified,a
