1、Designation:D581811(Reapproved 2022)Standard Practice forExposure and Retrieval of Samples to Evaluate InstallationDamage of Geosynthetics1This standard is issued under the fixed designation D5818;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、of revision,the year of last revision.A 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 covers standardized procedures for obtain-ing samples of geosynthetics from a test se
3、ction for use inassessment of the effects of damage immediately after instal-lation caused only by the installation techniques.The assess-ment may include physical testing.This practice is applicableto any geosynthetic.1.2 This practice is limited to full-scale test sections,anddoes not address labo
4、ratory modeling of field conditions.Thispractice does not address which test method(s)to use forquantifying installation damage.1.3 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 app
5、ro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDev
6、elopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4439 Terminology for GeosyntheticsD4873/D4873M Guide for Identification,Storage,and Han-dling of Geosynthetic Rol
7、ls and Samples3.Terminology3.1 Definitions:3.1.1 geosynthetic,na planar product manufactured frompolymeric material used with soil,rock,earth,or other geo-technical engineering-related material as an integral part of amanmade project,structure,or system.3.1.2 sample,n(1)a portion of material that is
8、 taken fortesting or for record purposes;(2)a group of specimens used,or of observations made,which provide information that can beused for making statistical inferences about the population(s)from which the specimens are drawn.3.1.3 test section,na distinct area of actual or simulatedfull-scale con
9、struction.3.1.4 For definitions of other geosynthetics terms used inthis practice,refer to Terminology D4439.4.Summary of Practice4.1 Damage to geosynthetics from installation operationsmay be quantified by evaluating specimens from a sample(s)exhumed from a full-scale installation.The sample(s)shou
10、ldbe installed using project-specific procedures and materials.When project-specific materials and/or procedures areunknown,generally accepted,representative materials andprocedures should be used and thoroughly documented andreported.Addressed within this practice are:amount of geo-synthetic sample
11、(s)to install;procedures for installing thegeosynthetic sample(s);procedures for exhuming the geosyn-thetic sample(s);procedure for obtaining control sample(s);and report preparation guidelines.The sample(s)should beretrieved immediately after installation to minimize potentialaging of the geosynthe
12、tic.Comparison of test results onexhumed and control specimens may be used to assess effectsof installation.Tests to perform are not addressed herein,andwill vary with the type and function of geosynthetic and projectrequirements.5.Significance and Use5.1 The ability to maintain design function(for
13、example,reinforcement,separation,barrier,etc.)or design properties(for example,tensile strength,chemical resistance,etc.),orboth,of a geosynthetic may be affected by damage to thephysical structure of the geosynthetic due to the rigors of fieldinstallation.The effect of damage may be assessed by ana
14、lyz-ing specimens cut from sample(s)retrieved after installation in1This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-thetics and is the direct responsibility of Subcommittee D35.01 on MechanicalProperties.Current edition approved Feb.1,2022.Published February 2022.Originallyap
15、proved in 1995.Last previous edition approved in 2018 as D5818 11(2018).DOI:10.1520/D5818-11R22.2For 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 Su
16、mmary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with 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.1a representative test section.Analysis may be p
