1、Designation:D6454/D6454M99(Reapproved 2021)Standard Test Method forDetermining the Short-Term Compression Behavior of TurfReinforcement Mats(TRMs)1This standard is issued under the fixed designation D6454/D6454M;the number immediately following the designation indicates theyear of original adoption
2、or,in the case of revision,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.1.Scope1.1 This test method establishes the procedures for evalua-tion of the deformations of a
3、 turf reinforcement mat(TRM)under short-term compressive loading.This test method isstrictly an index test method to be used to verify the compres-sive strength consistency of a given manufactured geosyn-thetic.Results from this test method should not be consideredas an indication of actual or long-
4、term performance of theTRM in field applications.1.2 Since these TRMs experience multidirectional compres-sive loadings in the field,this test method will not show actualfield performance and should not be used for this specificobjective.The evaluation of the results also should recognizethat the de
5、termination of the short-term single plane compres-sive behavior of geosynthetics does not reflect the installedperformance of TRMs and,therefore,should not be used as theonly method of product or performance specification.1.3 The values stated in either SI units or inch-pound unitsare to be regarde
6、d separately as standard.The values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.1.4 This standard does not purport to address all o
7、f 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-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-
8、dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Stan
9、dards:2D4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD4439 Terminology for GeosyntheticsD5199 Test Method for Measuring the Nominal Thicknessof Geosynthetics3.Terminology3.1 Definitions:3.1.1 compressive deformation,L,nthe decrease in gagelength pro
10、duced in the test specimen by a compressive load.3.1.2 compressive strain,nd,nthe ratio of compressivedeformation to the gage length of the test specimen.3.1.3 gage length,L,nin compression testing,the mea-sured thickness of the test specimen under specified compres-sional force,expressed in units o
11、f length prior to compressiveloading.D51993.1.4 geosynthetic,na planar product manufactured frompolymeric material used with foundation,soil,rock,earth,orany other geotechnical engineering related material as anintegral part of a man-made project,structure,or system.D44393.1.5 index test,na test pro
12、cedure which may contain aknown bias but which may be used to establish an order for aset of specimens with respect to the property of interest.D44393.1.6 yield point,nthe first point on the load-deformationcurve at which an increase in deformation occurs without acorresponding increase in load.3.1.
13、6.1 DiscussionSome geosynthetics do not exhibit anexact yield point.The tested TRM may exhibit a less steepslope at yield.In addition,it should be stated that the yieldpoint also may be the ultimate strength of the TRM.3.1.7 For definitions of terms relating to geotextiles,refer toTerminology D4439.
14、1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-thetic Erosion Control.Current edition approved Sept.1,2021.Published September 2021.Originallyapproved in 1999.Last previous edition approved in 2016 a
15、s D6454/D6454M 99(2016)1.DOI:10.1520/D6454_D6454M-99R21.2For 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.Copyright
16、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.14.Summary of Test Method4.1 Specimens are mounted between parallel plates in a loadfram
