ASTM_D_5261_-_10.pdf

Designation:D526110Standard Test Method forMeasuring Mass per Unit Area of Geotextiles1This standard is issued under the fixed designation D5261;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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 covers and can be used as an index tothe determination of mass per unit area of all geotextiles.1.2 The values stated in SI units or other units shall beregarded separately as standard.The values stated in parenthe-ses are provided for information only.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 appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD4354 Practice for Sampling of Geosynthetics for TestingD4439 Terminology for Geosynthetics2.2 ISO Standard:3ISO 9864:1990 Geotextiles-Determination of mass perunit area3.Terminology3.1 Definitions:3.1.1 atmosphere for testing geotextiles,n air maintainedat a relative humidity of 65 6 5%and temperature of 21 62C(70 6 4F).3.1.2 geosynthetic,na planar product manufactured frompolymeric material used with soil,rock,earth,or othergeotechnical-engineering-related material as an integral part ofa man-made project,structure,or system.3.1.3 geotextile,nany permeable textile used with foun-dation,soil,rock,earth,or any other geotechnical-engineering-related material as an integral part of a man-made project,structure,or system.3.1.3.1 DiscussionCurrent textile manufacturing tech-niques produce:nonwoven fabrics,knitted fabrics,and wovenfabrics.3.2 For definitions of other textile terms used in this testmethod,refer to Terminology D123.3.3 For definitions of other terms relating to geotextiles usedin this test method,refer to Terminology D4439.4.Summary of Test Method4.1 The mass per unit area of a geotextile is determined byweighing test specimens of known dimensions,cut fromvarious locations over the full width of the laboratory sample.The calculated values are then averaged to obtain the meanmass per unit area of the laboratory sample.5.Significance and Use5.1 This test method is used to determine if the geotextilematerial meets specifications for mass per unit area.This testmethod can be used for quality control to determine specimenconformance.This measurement allows for a simple control ofthe delivered material by a comparison of the mass per unitarea of the delivered material and the specified mass per unitarea.5.2 The procedure in this test method may be used foracceptance testing of commercial shipments,but caution isadvised since information about between-laboratory precisionis incomplete.Comparative tests in accordance with 5.2.1 areadvisable.5.2.1 In case of a dispute arising from differences inreported test results when using the procedures in this testmethod for acceptance testing of commercial shipments,thepurchaser and the manufacturer should conduct comparativetests to determine if there is a statistical bias between theirlaboratories.Competent statistical assistance is recommendedfor the investigation of bias.As a minimum,the two partiesshould take a group of test specimens that are as homogeneousas possible and which are from a lot of material of the type inquestion.The test specimen should then be randomly assignedin equal numbers to each laboratory for testing.The average1This test method is under the jurisdiction of ASTM Committee D35 onGeosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-cal Properties.Current edition approved March 1,2010.Published April 2010.Originallyapproved in 1992.Last previous edition approved in 2009 as D526192(2009).DOI:10.1520/D5261-10.2For 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 International Organization for Standardization(ISO),1,ch.dela Voie-Creuse,Case postale 56,CH-1211,Geneva 20,Switzerland,http:/www.iso.ch.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 results from the two laboratories should be compared using theappropriate students t-test and an acceptable probability levelchosen by the two parties before testing is begun.If a bias isfound,either its cause must be found and corrected or thepurchaser and the manufacturer must agree to interpret futuretest results in light of the known bias.6.Apparatus6.1 Balance,calibrated,capable of weighing to 5000 g,withan