1、Designation:D549615Standard Practice forIn Field Immersion Testing of Geosynthetics1This standard is issued under the fixed designation D5496;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in paren
2、theses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes an approach and methodologyfor immersion testing of geosynthetics(for example,geomem-branes used for landfill liner).1.2 This prac
3、tice does not provide for definition of thetesting to be performed on the geosynthetic samples for fieldimmersion.This practice does not address the determination ofresistance of the geosynthetic to the liquid in which it isimmersed.The user of this practice is referred to the appropri-ate Standard
4、Guide for Tests to evaluate the chemical resis-tance and for defining the testing to be performed for each ofthe geosynthetic components listed in 2.1.NOTE1EPA Method 9090 has been used in the past to investigate thecompatibility of geomembrane to leachates.1.3 The values stated in inch-pound units
5、are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility o
6、f 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:2D123 Terminology Relating to TextilesD4439 Terminology for GeosyntheticsD5322 Practice for Laboratory Im
7、mersion Procedures forEvaluating the Chemical Resistance of Geosynthetics toLiquidsD5747 Practice for Tests to Evaluate the Chemical Resis-tance of Geomembranes to Liquids2.2 EPA Document:3SW846 Method 9090 Compatibility Test for Wastes andMembrane Liners3.Terminology3.1 Definitions:3.1.1 field test
8、ing,ntesting performed in the field underactual conditions of temperature and exposure to the fluids forwhich the immersion testing is being performed.3.1.2 For definitions relating to geosynthetics,refer toTerminology D4439.3.1.3 For definitions relating to textiles,refer to Terminol-ogy D123.4.Sig
9、nificance and Use4.1 This practice provides an approach and methodology forconducting field immersion testing of geosynthetics used in theconstruction of liners in reservoirs,ponds,impoundments,orlandfills for containing liquids and solids.This practice shouldbe performed in accordance to and in con
10、junction with PracticeD5322 for assessing chemical resistance under both laboratoryand field conditions.4.2 The specification of procedures in this practice isintended to serve as a guide for those wishing to compare orinvestigate the chemical resistance of geosynthetics underactual field conditions
11、.5.Apparatus5.1 Sample Container,for containment of the geosynthetictest specimens.The containers should be perforated on all sidesand at the bottom to allow for complete flooding of the testspecimens.Stainless steel,or other chemically resistant steelalloys,is recommended.Do not use 316 stainless s
12、teel forfluids known to contain high-chloride ion concentrations.NOTE2Achemical analysis of the fluid should be available to the userprior to the start of field compatibility testing to allow for a review of asuitable material of construction for the sample container.If in doubt,testscan be conducte
13、d by placing samples of the sample container material ofconstruction in the fluid for a suitable period of time to determinecompatibility of the sample container with the fluid.If in doubt,and1This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-thetics and is the direct responsib
14、ility of Subcommittee D35.02 on EnduranceProperties.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1993.Last previous edition approved in 2009 as D5496 98(2009).DOI:10.1520/D5496-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Custo
15、mer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from United States EPA,Office of Solid Waste and EmergencyResponse,Test Methods for Evaluating Solid Waste,Physical/Chemical Methods.Copyright
16、 ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 testing cannot be performed prior to start of field compatibility testing,then an alloy such as Carpenter 20 or tantalum-coated carbon steel shouldbe considered for any field samples that will be exposed to aggressivefluids for more than one year.5.1.1 The size of the sample container is not specified sinceit will be dependent on the number of geosynthetic specimensrequiring testing and the size
