1、Designation:D7101131Standard Index Test Method forDetermination of Unvegetated Rolled Erosion ControlProduct(RECP)Ability to Protect Soil from Rain Splash andAssociated Runoff Under Bench-Scale Conditions1This standard is issued under the fixed designation D7101;the number immediately following the
2、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.1NOTEEditorially updated units of measuremen
3、t statement in April 2018.1.Scope*1.1 This index test method establishes the guidelines,re-quirements and procedures for evaluating the ability of unveg-etated rolled erosion control products(RECPs)to protect soilsfrom simulated rainfall(rain splash)and minimal runoffinduced erosion.The critical ele
4、ment of this protection is theability of the unvegetated RECP to absorb the impact force ofraindrops,thereby reducing soil particle loosening through“splash”mechanisms,and limiting the ability of runoff to carrythe loosened soil particles.1.2 This index test method utilizes bench-scale testingproced
5、ures and is not indicative of unvegetated RECP perfor-mance in conditions typically found in the field.NOTE1The values obtained with this bench scale procedure are forinitial performance indication,general product comparison and confor-mance purposes only.These values should not be used in estimatin
6、g RECPsoil protection in actual field use with such calculations as the UniversalSoil Loss Equation(USLE)or Revised Universal Soil Loss Equation(RUSLE)without verification from qualified,large-scale tests.1.3 This index test is not intended to replace full-scalesimulation or field testing in acquisi
7、tion of performance valuesthat are required in the design of erosion control measuresutilizing unvegetated RECPs.1.4 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.5 All obs
8、erved and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026,unless superseded by this standard.1.5.1 The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as theindustry standard.In a
9、ddition,they 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 sign
10、ificant digits of reported data to becommensurate with these considerations.It is beyond the scopeof this index test method to consider significant digits used inanalytical methods for engineering design.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with i
11、ts use and may involveuse of hazardous materials,equipment,and operations.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.Also,the user mustcomply with prevalent regulat
12、ory codes,such as OSHA(Oc-cupational Health and Safety Administration)guidelines,whileusing the index test method.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment o
13、f International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD698 Test Methods for Laboratory Compaction Character-istics of So
14、il Using Standard Effort(12,400 ft-lbf/ft3(600kN-m/m3)D6026 Practice for Using Significant Digits in GeotechnicalDataD3740 Practice for Minimum Requirements for Agencies1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D
15、18.25 on Erosion andSediment Control Technology.Current edition approved June 15,2013.Published July 2013.Originallyapproved in 2007.Last previous edition approved in 2008 as D7101 08.DOI:10.1520/D7101-13E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer S
16、ervice at serviceastm.org.For Annual Book of ASTMStandards volume information,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 internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of Int