1、Designation: D7557/D7557M 09 (Reapproved 2013)1Standard 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
2、, the year 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.1NOTEUnits information was editorially corrected in July 2013.1. Scope1.1 This practice provides guidance on the loc
3、ation,frequency, and method of sampling representative specimensfrom large blocks of Expanded Polystyrene (EPS) Geofoam.1.2 This practice is not intended to replace professionaljudgments nor should this guide be applied without consider-ation of a projects many unique aspects.1.3 The word “standard”
4、 in the title of this guide meansonly that this guide has been approved through the 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 may not be exact equivalents; therefore, each
5、system shall be used independently of the other. Combiningvalues from the two systems may result in non-conformancewith the standard.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 estab
6、lish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D4439 Terminology for GeosyntheticsD6817 Specification for Rigid Cellular Polystyrene Geo-foam2.2 ISO Standard:3ISO/IEC 17025:2005 General
7、Requirements for the Com-petence 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 Geofoamma
8、nufactured under conditions of production 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
9、 compliance to Specifi-cation D6817.5. Significance and Use5.1 This practice provides guidance on sampling of EPSgeofoam in order to determine compliance to SpecificationD6817.6. Procedure6.1 Initial Sampling:6.1.1 Select samples of the EPS Geofoam from a firstproduction lot to ensure compliance wit
10、h Specification D6817.Selection of samples shall be as agreed on between purchaserand 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 Geof
11、oam block and the center of the EPSGeofoam block as shown in Fig. 1.NOTE 1Some EPS Geofoam suppliers may cut larger sized blocksinto two or three smaller sized blocks. The smallest dimension of the blockis the height.6.1.3 A minimum of five specimens shall be cut from eachof the three regions of the
12、 block. The specimens shall bedistributed 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 D6817.1This practice is under the jurisdiction of ASTM Commi
13、ttee D35 on Geosyn-thetics and is the direct responsibility of Subcommittee D35.03 on Permeability andFiltration.Current edition approved July 1, 2013. Published July 2013. Originally approvedin 2009. Last previous edition approved in 2009 as D755709. DOI: 10.1520/D7557_D7557M-09R13E01.2For referenc
14、ed 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 from International Organization for Standardization (ISO), 1, c
15、h. 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 States16.1.5 Testing shall be conducted by a test laboratory incompliance with ISO/IEC 17025.6.1.6 The average comp
16、ressive resistance for the five speci-mens shall meet the requirements of Table 1 of SpecificationD6817 for the Type(s) tested. No individual sample result maybe less than 90% of the minimum requirement.6.2 Ongoing Sample:6.2.1 Select samples of the EPS Geofoam from ongoingproduction lots at the fre
17、quency noted in Table 1 to ensurecompliance with Specification D6817. Selection of samplesshall be as agreed on between purchaser and supplier.6.2.2 Ongoing sampling shall include sampling of one set ofspecimens. The set shall be selected from a random region ofa single EPS Geofoam block.6.2.3 A min
18、imum of five specimens shall be cut from therandom region of the block. The specimens shall be distributedevenly through the height of the block. The specimens shall notbe selected adjacent to the surface of the block.6.2.4 Sample testing shall be in accordance with 6.1.4through 6.1.6.7. Keywords7.1
19、 EPS; expanded polystyrenes; geofoams; geofoam lots;rigid cellular polystyrenesASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the vali
20、dity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comm
21、ents are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have
22、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 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple c
23、opies) 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/).FIG. 1 EPS Geofoam Block Initial Sampling LocationsTABLE 1 EPS Geofoam Sampling FrequencyInitial Sampling Ongoing Sample1 block fromfirst lot1 block per each500 m3650 yd3for first2,000 m32600 yd31 block per each2,000 m32600 yd3thereafterD7557/D7557M 09 (2013)12
