1、Designation: D 7557 09Standard Practice forSampling of Expanded Polystyrene Geofoam Specimens1This standard is issued under the fixed designation D 7557; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A
2、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 provides guidance on the location, fre-quency, and method of sampling representative specimensfrom large blocks of Expand
3、ed 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” in the title of this guide meansonly that this guide has been approved through the ASTMInt
4、ernational consensus process.1.4 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-bility of regulatory limitations
5、 prior to use.2. Referenced Documents2.1 ASTM Standards:2D 4439 Terminology for GeosyntheticsD 6817 Specification for Rigid Cellular Polystyrene Geo-foam2.2 ISO Standard:3ISO/IEC 17025:2005 General Requirements for the Com-petence of Testing and Calibration Laboratories3. Terminology3.1 DefinitionsF
6、or definitions of general geosyntheticterms used in this standard refer to Terminology, D 4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 Geofoam Lota definite quantity of EPS Geofoammanufactured under conditions of production that are consid-ered uniform.4. Summary of Practice4.1 EPS
7、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 D 6817.5. Significance and Use5.1 This practice provides guidance on sa
8、mpling of EPSgeofoam in order to determine compliance to SpecificationD 68176. Procedure6.1 Initial Sampling6.1.1 Select samples of the EPS Geofoam from a firstproduction lot to ensure compliance with Specification D 6817.Selection of samples shall be as agreed on between purchaserand supplier.6.1.2
9、 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 the center of the EPSGeofoam block as shown in Fig. 1.NOTE 1Some EPS Geofoam Suppliers
10、 may cut larger sized blocksinto two or three smaller sized blocks. The smallest dimension of the blockis the height.1This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-thetics and is the direct responsibility of Subcommittee D35.03 on Permeability andFiltration.Current edition
11、approved June 1, 2009. Published June 2009.2For 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 from In
12、ternational Organization for Standardization (ISO), 1, ch. dela Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.ch.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6.1.3 A minimum of 5 specimens shall be c
13、ut from each ofthe 3 regions 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.6.1.4 The specimens shall be tested in accordance withSection 13.2 of Specification D 6817.6.1.5 Testing shall
14、be conducted by a test laboratory incompliance with ISO/IEC 17025.6.1.6 The average compressive resistance for the 5 speci-mens shall meet the requirements of Table 1 of SpecificationD 6817 for the Type(s) tested. No individual sample result maybe less than 90% of the minimum requirement.6.2 Ongoing
15、 Sample6.2.1 Select samples of the EPS Geofoam from ongoingproduction lots at the frequency noted in Table 1 to ensurecompliance with Specification D 6817. Selection of samplesshall be as agreed on between purchaser and supplier.6.2.2 Ongoing sampling shall include sampling of one set ofspecimens. T
16、he set shall be selected from a random region ofa single EPS Geofoam block.6.2.3 A minimum of 5 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
17、.6.2.4 Sample testing shall be in accordance with 6.1.4through 6.1.67. Keywords7.1 EPS; expanded polystyrene; geofoam; geofoam lot;rigid cellular polystyreneASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standar
18、d. Users of this standard are expressly advised that determination of the validity 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
19、 every five years andif not revised, either reapproved or withdrawn. Your comments 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 t
20、echnical committee, which you may attend. If you feel that your comments have 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 Consho
21、hocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) 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).FIG. 1 EPS Geofoam Block Initial Sampling LocationsTABLE 1 EPS Geofoam Sampling FrequencyInitial Sampling Ongoing Sample1 block fromfirst lot1 block per each500 m3(650 yd3)for first2,000 m3(2600 yd3)1 block per each2,000 m3(2600 yd3) thereafterD7557092
