1、Designation:D514111Standard Test Method forDetermining Filtering Efficiency and Flow Rate of theFiltration Component of a Sediment Retention Device1This standard is issued under the fixed designation D5141;the number immediately following the designation indicates the year oforiginal adoption or,in
2、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 is used to determine the filteringefficiency and the flow rate of the fil
3、tration component of asediment retention device,such as a silt fence,silt barrier,orinlet protector.1.1.1 The results are shown as a percentage for filteringefficiency and cubic metres per square metre per minute(m3/m2/min)or gallons per square foot per minute(gal/ft2/min)for flow rate.1.1.2 The fil
4、tering efficiency indicates the percent of sedi-ment removed from sediment-laden water.1.1.3 The flow rate is the average rate of passage of thesediment-laden water through the filtration component of asediment retention device.1.2 This test method requires several specialized pieces ofequipment,suc
5、h as an integrated water sampler and an ana-lytical balance,or a vacuum filtration system.At the clientsdiscretion the test soil is either a site-specific soil or a soil thatis representative of a target default gradation.1.3 The values stated in SI units are the standard,while theinch-pound units a
6、re provided for information.The valuesexpressed in each system may not be exact equivalents;therefore,each system must be used independently of the other,without combining values in any way.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is t
7、heresponsibility 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 TextilesD653 Terminology Relating to Soil,Rock,and Contai
8、nedFluidsD4439 Terminology for GeosyntheticsD4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD4759 Practice for Determining the Specification Confor-mance of Geosynthetics2.2 American Public Health Association(APHA)Standard:208D Total Nonfiltrable Resi
9、due Dried at 103105C(TotalSuspended Matter)33.Terminology3.1 Definitions:3.1.1 filtration componenta geotextile or other materialdesigned to act as a filter.3.1.2 filterSee Terminology D653.3.1.3 geosynthetic,na planar product manufactured frompolymeric material used with foundation soil,rock,earth,
10、orany other geotechnical engineering related material as anintegral part of a man-made project,structure,or system.(SeePractice D4759.)3.1.4 performance property,na result obtained by con-ducting a performance test.3.1.5 performance test,nin geosynthetics,a laboratoryprocedure which simulates select
11、ed field conditions which canbe used in design.3.1.6 Fordefinitionsofothertermsrelatingtogeosynthetics,refer to Terminology D4439.For definitions oftextile terms,refer to Terminology D123.For definitions of soilterms,refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1
12、filtering effciency,FE,nin geosynthetics,the per-cent of sediment removed from sediment-laden water by thefiltration component of a sediment retention device over aspecified period of time.1Thistestmethodisunderthejurisdictionof ASTMCommitteeD35Geosynthetics and is the direct responsibility of Subco
13、mmittee D35.03 onPermeability and Filtration.Current edition approved Oct.1,2011.Published October 2011.Originallyapproved in 1991.Last previous edition approved in 2009 as D5141 09.DOI:10.1520/D5141-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Servic
14、e at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from American Public Health Association(APHA),1015 EighteenthSt.NW,Washington,DC 20036.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,We
15、st Conshohocken,PA 19428-2959.United States1 3.2.2 flow rate,FR L3L2T1,nin geosynthetics,thevolume of fluid per unit time,expressed as an average,whichpasses through a cross-sectional plane perpendicular to thefluid flow.3.2.3 flume,nan apparatus that carries a liquid to an outlet.3.2.4 sediment ret
16、ention device(SRD),nin geosynthetics,a temporary composite structure used to induce the removal ofsuspended sediments from sediment-laden flowing water.3.2.5 silt fence,nin geosynthetics,a type of sedimentretention device.4.Summary of Test Method4.1 A filtration component of a sediment retention devicespecimen is placed vertically across a flume or over a horizon-tal opening at the end of a flume while sediment-laden water ispassed through the specimen.4.1.1 The time that water flows through the
