1、Designation:D624122Standard Test Method forStatic Puncture Index Strength of Geotextiles andGeotextile-Related Products Using a 50 mm Probe1This standard is issued under the fixed designation D6241;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 test method is an index test used to measure theforce required to puncture a geotextile and g
3、eotextile-relatedproducts with a 50 mm diameter probe rod.The dimensions ofthe probe provide a multidirectional force on the geotextile.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 This standard does not purport to ad
4、dress all of 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.1.4 This international standard was develope
5、d in accor-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.
6、1 ASTM Standards:2D76/D76M Specification for Tensile Testing Machines forTextilesD123 Terminology Relating to TextilesD1776/D1776M Practice for Conditioning and Testing Tex-tilesD1883 Test Method for California Bearing Ratio(CBR)ofLaboratory-Compacted SoilsD4354 Practice for Sampling of Geosynthetic
7、s and RolledErosion Control Products(RECPs)for TestingD4439 Terminology for GeosyntheticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodNOTE1Test Method D1883 describes a mold(CBR mold)that can beused for this test method.3.Terminology3.1 DefinitionsF
8、or definitions of other textile terms usedin this test method,refer to Terminology D123.For definitionsof other terms relating to geosynthetics used in this testmethod,refer to Terminology D4439.4.Summary of Test Method4.1 A test specimen is clamped without tension betweencircular plates and secured
9、 in a tensile or compression testingmachine,or both.A force is exerted against the center of theunsupported portion of the test specimen by a circular steelprobe attached to the load indicator until rupture occurs.Themaximum force is the value of puncture strength.5.Significance and Use5.1 Puncture
10、using a 50 mm flat circular probe is applicableto determine the index strength resistance and deformation ofa particular geotextile or geotextile-related products.5.2 This test method is considered satisfactory for accep-tance testing of commercial shipments of geotextiles.5.3 In case of a dispute a
11、rising from differences in reportedtest results when using this test method for acceptance testingof commercial shipments,the purchaser and the suppliershould conduct comparative tests to determine if there is astatistical bias between their laboratories.Competent statisticalassistance is recommende
12、d for the investigation of bias.As aminimum,the two parties should take a group of test speci-mens that are as homogeneous as possible and that are from alot of the type in question.The test specimens then should berandomly assigned in equal numbers to each laboratory fortesting.The average results
13、from the two laboratories should becompared using Students t-test for unpaired data and anacceptable probability level chosen by the two parties beforethe testing is begun.If a bias is found,either its cause must befound and corrected,or the purchaser and the supplier mustagree to interpret future t
14、est results in light of the known bias.1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics is the direct responsibility of Subcommittee D35.01 on MechanicalProperties.Current edition approved July 1,2022.Published July 2022.Originally approvedin 1998.Last previous editi
15、on approved in 2014 as D6241 14.DOI:10.1520/D6241-22.2For 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 AST
16、M 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.15.4 This test method is not applicable to materials that aremanufactured in sizes that are
