1、Designation:D7322/D7322M17Standard Test Method forDetermination of Erosion Control Product(ECP)Ability toEncourage Seed Germination and Plant Growth UnderBench-Scale Conditions1This standard is issued under the fixed designation D7322/D7322M;the number immediately following the designation indicates
2、 theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers guidelines,requirements,andpr
3、ocedures for evaluating the effect of Erosion Control Prod-ucts(ECPs)on seed germination and vegetation enhancement.1.2 This test method will evaluate the effects of both rollederosion control products(RECPs)and hydraulically-appliederosion control products(HECPs)on seed germination in acontrolled e
4、nvironment.1.3 This test method utilizes bench-scale testing proceduresand shall not be interpreted as indicative of field performance.1.4 This test method is not intended to replace full-scalesimulation or field testing in acquisition of performance valuesthat are required in the design of erosion
5、control measuresutilizing RECPs and HECPs.1.5 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two syst
6、ems may result in non-conformancewith the standard.1.6 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,health and environmental practices and deter-mine the applic
7、ability of regulatory limitations prior to use.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 of International Standards,Guides and Recom-mendations issued by the
8、 World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD4354 Practice for Sampling of Geosynthetics and RolledErosion Control Products(RECPs)for TestingD5268 Specification for Topsoil Used
9、 for Landscaping Pur-posesD6475 Test Method for Measuring Mass per Unit Area ofErosion Control BlanketsD6566 Test Method for Measuring Mass per Unit Area ofTurf Reinforcement MatsE145 Specification for Gravity-Convection and Forced-Ventilation Ovens3.Terminology3.1 For definitions of terms used in t
10、his test method,seeTerminology D653.4.Summary of Test Method4.1 Containers containing soil are sown with seeds and thencovered with an ECP.Additional containers of soil are sownwith seed and left uncovered as controls.The light,temperature,and humidity are maintained and documented.The amount of ger
11、mination and growth is measured periodi-cally throughout the test,and the mass of vegetation iscalculated at the conclusion of the test.4.2 Each ECP under consideration as well as control con-tainers of uncovered soil undergo testing in a controlledenvironment.5.Significance and Use5.1 This test met
12、hod evaluates the effect of an ECP on seedgermination and initial plant growth in a controlled environ-ment.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.25 on Erosion andSediment Control Technology.Current editi
13、on approved July 15,2017.Published August 2017.Originallyapproved in 2007.Last previous edition approved in 2016 as D7322 161.DOI:10.1520/D7322_D7322M-17.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStand
14、ards 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 develop
15、ed in accordance with internationally 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 5.2 The results of this
16、 test can be used to compare ECPs andother erosion control materials to determine which are the mosteffective at encouraging the growth of vegetation.6.Apparatus6.1 Germination ContainersPlastic pots nominally 20 6 1cm 8 6 0.4 in.inside diameter and having a height of 10 61 cm 4 6 0.4 in.The pots include a perforated bottom toallow drainage.6.2 Controlled Environmental ChamberPlatform and sur-roundings capable of maintaining a constant temperature of 276 2C 81 6 2F,45 6 5%relative humidity,and 9