1、Designation:D7557/D7557M09(Reapproved 2021)Standard Practice forSampling of Expanded Polystyrene Geofoam Specimens1This standard is issued under the fixed designation D7557/D7557M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the y
2、ear of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice provides guidance on the location,frequency,and method of sampling representative specimensfrom large
3、blocks of expanded polystyrene(EPS)geofoam.1.2 This practice is not intended to replace professionaljudgment,nor should this guide be applied without consider-ation of a projects many unique aspects.1.3The word“standard”in the title of this guide meansonly that this guide has been approved through t
4、he ASTMInternational consensus process.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently o
5、f the other,and values from the twosystems shall not be combined.1.5 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,health,and environmental practices and deter-m
6、ine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations
7、 issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4439 Terminology for GeosyntheticsD6817/D6817M Specification for Rigid Cellular Polysty-rene Geofoam2.2 ISO Standard:3ISO/IEC 17025:2005 General Requirements for the Compe-tenc
8、e of Testing and Calibration Laboratories3.Terminology3.1 DefinitionsFor definitions of general geosyntheticterms used in this standard,refer to Terminology D4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 geofoam lota definite quantity of EPS geofoammanufactured under conditions of pr
9、oduction that are consid-ered uniform.4.Summary of Practice4.1 EPS geofoam is commonly used in geotechnical appli-cations when an extremely lightweight material is required.This practice provides guidance for sampling EPS geofoamspecimens for ongoing quality control compliance to Specifi-cation D681
10、7/D6817M.5.Significance and Use5.1 This practice provides guidance on sampling of EPSgeofoam in order to determine compliance to SpecificationD6817/D6817M.6.Procedure6.1 Initial Sampling:6.1.1 Select samples of the EPS geofoam from a firstproduction lot to ensure compliance with Specification D6817/
11、D6817M.Selection of samples shall be as agreed uponbetween purchaser and supplier.6.1.2 Initial sampling shall include sampling of three sets ofspecimens.The sets shall be selected from different regions ofa single EPS geofoam block.The regions shall include thecorners of the EPS geofoam block and t
12、he center of the EPSgeofoam block as shown in Fig.1.NOTE1Some EPS geofoam suppliers may cut larger sized blocks intotwo or three smaller sized blocks.The smallest dimension of the block isthe height.6.1.3 A minimum of five specimens shall be cut from eachof the three regions of the block.The specime
13、ns shall be1This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-thetics and is the direct responsibility of Subcommittee D35.06 on GeosyntheticSpecifications.Current edition approved May 1,2021.Published May 2021.Originallyapproved in 2009.Last previous edition approved in 2013 a
14、s D7557/D7557M 09(2013)1.DOI:10.1520/D7557_D7557M-09R21.2For 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.3Available
15、 from International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,CP 56,CH-1211 Geneva 20,Switzerland,http:/www.iso.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance wi
16、th internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1distributed evenly through the height of the block.The speci-mens shall not be selected adjacent to the surface of the block.6.1.4 The specimens shall be tested in accordance withSection 13.2 of Specification D6817/D6817M.6.1.5 Testing shall b
