1、Designation:D338518Standard Test Method forInfiltration Rate of Soils in Field Using Double-RingInfiltrometer1This standard is issued under the fixed designation D3385;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This test method describes a procedure for
3、 field mea-surement of the rate of infiltration of liquid(typically water)into soils using double-ring infiltrometer.1.2 The infiltrometer is installed by driving into the soil.Theinfiltrometer also may be installed in a trench excavated in dryor stiff soils.1.3 Soils should be regarded as natural o
4、ccurring soils orprocessed materials or mixtures of natural soils and processedmaterials,or other porous materials,and which are basicallyinsoluble and are in accordance with requirements of 1.6.1.4 This test method is particularly applicable to relativelyuniform fine-grained soils,with an absence o
5、f very plastic(fat)clays and gravel-size particles and with moderate to lowresistance to ring penetration.1.5 This test method may be conducted at the groundsurface or at given depths in pits,and on bare soil or withvegetation in place,depending on the conditions for whichinfiltration rates are desi
6、red.However,this test method cannotbe conducted where the test surface is below the groundwatertable or perched water table.1.6 This test method is difficult to use or the resultant datamay be unreliable,or both,in very pervious or impervious soils(soils with a hydraulic conductivity greater than ab
7、out 102cm/s or less than about 1 105cm/s)or in dry or stiff soils ifthese fracture when the rings are installed.For soils withhydraulic conductivity less than 1 105cm/s refer to TestMethod D5093.1.7 This test method cannot be used directly to determinethe hydraulic conductivity(coefficient of permea
8、bility)of thesoil(see 5.2).1.8 UnitsThe values stated in SI units are to be regardedas the standard.The inch-pound units given in parentheses aremathematical conversions,which are provided for informationpurposes only and are not considered standard.1.9 This standard does not purport to address all
9、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.1.10 This international standard was developed in acco
10、r-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 St
11、andards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1452 Practice for Soil Exploration and Sampling by AugerBoringsD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD2488 Practice for Description and Identification of Soils(Visual-Manua
12、l Procedures)D3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD5093 Test Method for Field Measurement of InfiltrationRate Using Double-Ring Infiltrometer with Sealed-InnerRing3.Terminology3.1 Defini
13、tionsFor common definitions of technical termsin this standard,refer to Terminology D653.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.04 on HydrologicProperties and Hydraulic Barriers.Current edition approved Ma
14、rch 1,2018.Published April 2018.Originallyapproved in 1975.Last previous edition approved in 2009 as D3385 09.DOI:10.1520/D3385-18.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information
15、,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with i
16、nternationally 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.1 3.2 Definitions of Terms Specific to This Standard:3.2.1 incremental infiltration velocitythe quantity of flowper unit area over an increment of time.It has the same unitsas the infiltration rate.3.2.2 infiltrationthe downward entry of liquid int
