1、Designation:D645915Standard Test Method forDetermination of Rolled Erosion Control Product(RECP)Performance in Protecting Hillslopes from Rainfall-InducedErosion1This standard is issued under the fixed designation D6459;the number immediately following the designation indicates the year oforiginal a
2、doption 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.Scope*1.1 This test method covers the guidelines,requirementsand procedures for evalu
3、ating the ability of Rolled ErosionControl Products(RECPs)to protect hillslopes from rainfall-induced erosion.Critical elements of this protection are theability of the RECP to:1.1.1 Absorb the impact force of raindrops,thereby reduc-ing soil particle loosening through“splash”mechanisms;1.1.2 Slow r
4、unoff and encourage infiltration,thereby reduc-ing soil particle displacement and transport through“overlandflow”mechanisms;1.1.3 Absorb shear forces of overland flow;and,1.1.4 Trap soil particles beneath.1.2 This test method utilizes full-scale testing procedures,rather than reduced-scale(bench-sca
5、le)simulation,and ispatterned after conditions typically found on construction sitesat the conclusion of earthwork operations,but prior to the startof revegetation work.Therefore this considers only unveg-etated conditions.1.3 This test method provides a comparative evaluation ofan RECP-to baseline
6、bare soil conditions under controlled anddocumented conditions.1.4 The values stated in SI units are to be regarded asstandard.The values given in parentheses are mathematicalconversions to inch-pound units,which are provided forinformation only and are not considered standard.1.5 All observed and c
7、alculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026,unless superseded by this standard.1.5.1 The procedures used to specify how data are collected/recorded or calculated,in this standard are regarded as theindustry standard.In addition,the
8、y are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduce significant dig
9、its of reported data to becommensurate with these considerations.It is beyond the scopeof this standard to consider significant digits used in analyticalmethods for engineering design.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresp
10、onsibility 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.Also,the user mustcomply with prevalent regulatory codes,such as OSHA(Oc-cupational Health and SafetyAdministration)guidelines,whileus
11、ing the test method.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD698 Test Methods for Laboratory Compaction Character-istics of Soil Using Standard Effort(12 400 ft-lbf/ft3(600kN-m/m3)D3740 Practice for Minimum Requirements for AgenciesEngaged
12、in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD6026 Practice for Using Significant Digits in GeotechnicalDataD6475 Test Method for Measuring Mass Per Unit Area ofErosion Control Blankets(Withdrawn 2015)3D6525 Test Method for Measuring Nominal Thickness of
13、Rolled Erosion Control ProductsD6566 Test Method for Measuring Mass per Unit Area ofTurf Reinforcement Mats1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock;Subcommittee D18.25 on Erosion and Sediment Control Technology;and isthe direct responsibility of Section.02 on
14、Erosion Control Blankets(ECBs).Current edition approved Nov.1,2015.Published November 2015.Originallyapproved in 1999.Last previous edition approved in 2011 as D645911.DOI:10.1520/D6459-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceas
15、tm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International
16、,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D6567 Test Method for Measuring the Light Penetration ofa Turf Reinforcement Mat(TRM)D6818 Test Method for Ultimate Tensile Properties ofRolled Erosion Control Products3.Terminology3.1 For common definitions of terms in this standard,referto Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 erosion control blanket(ECB)in erosion control,nadegradable material,composed primarily of processed n