1、Designation:D581822Standard 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 of revision,the y
2、ear 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 section for use ina
3、ssessment 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 except those installed between layers ofaggregate or soil modified by a binder.NOTE1The binder wou
4、ld inhibit the retrieval of the geosyntheticwithout inflicting further damage to the geosynthetic.Other practices maybe suitable for retrieving geosynthetics used in these applications but areout of the scope of this practice.1.2 This practice is limited to full-scale test sections anddoes not addre
5、ss laboratory 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 establ
6、ish appro-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
7、 theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD4439 Terminology for GeosyntheticsD4873/D4873M Guide for Identificati
8、on,Storage,and Han-dling of Geosynthetic Rolls and Samples3.Terminology3.1 DefinitionsFor definitions related to textiles,see Ter-minology D123;for geosynthetics,see Terminology D4439.3.2 Definitions of Terms Specific to This Standard:3.2.1 test section,na distinct area of actual or simulatedfull-sc
9、ale construction.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)shouldbe installed using project-specific procedures and materials.When project-specific materia
10、ls 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(s)to install;procedures for installing thegeosynthetic sample(s);procedures for exhuming th
11、e 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 geosynthetic.Comparison of test results onexhumed and control specimens may be used to assess effects
12、of 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 example,reinforcement,separation,barrier,etc.)or design properties(for example,tensile stren
13、gth,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 analyz-ing specimens cut from sample(s)retrieved after installation ina representative test sec
14、tion.Analysis may be performed withvisual examination or laboratory testing of specimens from thecontrol sample(s),and from the exhumed sample(s).1This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-thetics and is the direct responsibility of Subcommittee D35.01 on MechanicalProp
15、erties.Current edition approved July 1,2022.Published July 2022.Originally approvedin 1995.Last previous edition approved in 2022 as D5818 11(2022).DOI:10.1520/D5818-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Bo
16、ok of ASTMStandards volume information,refer to the standards Document Summary 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 Barrier