1、Designation:D475911Standard Practice forDetermining the Specification Conformance ofGeosynthetics1This standard is issued under the fixed designation D4759;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A n
2、umber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This practice covers a procedure for determining thecon
3、formance of geosynthetic properties to standard specifica-tions.1.2 This standard does not purport to address all of thesafety concerns,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-
4、bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD4439 Terminology for GeosyntheticsD4533 Test Method for Trapezoid Tearing Strength of Geo-textilesD7273 Guide for
5、for Acceptance Testing Requirements forGeonets and Geonet Drainage Geocomposites3.Terminology3.1 For general definitions used in this document,refer toTerminology D4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 test result,na value obtained by a given test method,expressed as a single
6、 determination or a specified combinationof a number of determinations.4.Significance and Use4.1 This practice provides a means by which the purchasercan determine the conformance of geosynthetic properties asapplied to the acceptance or rejection of a material in regardsto a material specification.
7、4.2 This practice has been developed with strong emphasison practicality and the realization that all geosynthetics aresubjected to a vigorous quality control program prior toshipping.NOTE1It is suggested that the user obtain the mean,standarddeviation,and/or the coefficient of variation for given p
8、hysical/mechanicalproperties of a product directly from the manufacturer.If this data isunavailable,it is suggested that users of this practice begin to accumulatedata that can be used to estimate product averages and standard deviationsfor each product.NOTE2The risk to the purchaser of buying out o
9、f specificationmaterials is minimal when conformance requirements are detailed in thepurchase specification and adequate conformance testing is performed.Itis the producers responsibility to perform thorough quality control testingfor all properties requiring certification.The producers risk of reje
10、ction isminimal with the performance of this thorough quality control testing.5.Summary of the Test Procedure5.1 Procedure AThis procedure determines the confor-mance of geosynthetic materials properties to acceptable speci-fications values.NOTE3Conformance testing is done by the purchaser or design
11、atedperson/organization.It is usually done as the geosynthetics are brought tothe project site and justify the payment of the billing(D4354).Typicallytesting is performed on the final product and no components to produce orassemble the final geosynthetic material need to be conformance tested.5.2 Th
12、is procedure determines the conformance of geo-composite geosynthetic material properties to a set of accept-able specification values.Typically multiple individual com-ponents need to be tested together with the final geocompositeproduct to show conformance with the acceptable materialspecification
13、.Since those individual components might ormight not be altered during production/assembly,samplecollection is typically executed during production/assembly atthe manufacturing facility.6.Procedure A6.1 Divide into lots and select lot and laboratory samples asdirected in Practice D4354.1This practic
14、e is under the jurisdiction of ASTM Committee D35 on Geosyn-theticsand is the direct responsibility of Subcommittee D35.01 on MechanicalProperties.Current edition approved July 1,2011.Published August 2011.Originallyapproved in 1988.Last previous edition approved in 2007 as D475902(07).DOI:10.1520/D
15、4759-11.2For 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 the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box
16、C700,West Conshohocken,PA 19428-2959.United States1 6.2 Test the number of specimens as directed in the appli-cable testing method.6.3 If the average test values for the individual lot samplingunit meet all the acceptable specification values,the lot passes.6.4 If the average test value for any individual lot samplingunit does not meet one or more of the acceptable specificationvalues,the lot shall be resampled and tested,except as noted in6.4.3.6.4.1 Any individual lot sampling unit which fails
