1、Designation:C1781/C1781M15Standard Test Method forSurface Infiltration Rate of Permeable Unit PavementSystems1This standard is issued under the fixed designation C1781/C1781M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year o
2、f 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 the determination of the fieldsurface infiltration rate of in place permeable unit pavementsyste
3、ms surfaced with solid interlocking concrete paving units,concrete grid paving units,or clay paving brick.NOTE1For in-place pervious concrete,Test Method C1701/C1701Mshould be used.Test Method C1701/C1701M is functionally identical tothis standard,but does not include the added provisions for positi
4、oningand securing the test ring to a discontinuous surface,which are detailed inthis standard.Both tests methods give comparable results1.2 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;t
5、herefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.3 The text of this test method references notes that provideexplanatory material.These notes shall not be considered asrequirements of the test method.1.
6、4 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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documen
7、ts2.1 ASTM Standards:2C902 Specification for Pedestrian and Light Traffic PavingBrickC920 Specification for Elastomeric Joint SealantsC936/C936M Specification for Solid Concrete InterlockingPaving UnitsC1232 Terminology of MasonryC1272 Specification for Heavy Vehicular Paving BrickC1319 Specificatio
8、n for Concrete Grid Paving UnitsC1701/C1701M Test Method for Infiltration Rate of In PlacePervious Concrete2.2 Other Standards:3Federal Specification A-A-3110(TT-P-1536A)PlumbingFixture Setting Compound3.Terminology3.1 DefinitionsThe terms used in this test method aredefined in Terminology C1232.4.S
9、ummary of Test Method4.1 An infiltration ring is temporarily sealed to the surfaceof a permeable unit pavement system.These pavementstypically consist of solid concrete paving units conforming toSpecification C936/C936M,concrete grid paving units con-forming to Specification C1319,or clay paving bri
10、ck conform-ing to Specification C902 or C1272.These pavements allowdrainage through joints between the units or through voidsformed by the intersection of two or more units or intentionallymanufactured into the units.The results of this test method forunit pavement systems can be compared to that us
11、ing TestMethod C1701/C1701M for pervious concrete.After pre-wetting the test location,a given mass of water is introducedinto the ring and the time for the water to infiltrate thepavement is recorded.The infiltration rate is calculated inaccordance with 9.1.5.Significance and Use5.1 This test method
12、 can be used for acceptance of surfaceinfiltration of new permeable unit pavement systems.5.2 Tests performed at the same location across a span ofyears may be used to detect a reduction of infiltration rate ofthe permeable surface,thereby identifying the need for anyremedial maintenance intended to
13、 increase the infiltration ratesto predefined levels.1This test method is under the jurisdiction of ASTM Committee C15 onManufactured Masonry Units and is the direct responsibility of SubcommitteeC15.04 on Research.Current edition approved July 1,2015.Published July 2015.Originally approvedin 2013.L
14、ast previous edition approved in 2014 as C1781/C1781M 14a.DOI:10.1520/C1781_C1781M15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page
15、onthe ASTM website.3Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/dodssp.daps.dla.mil.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Consh
16、ohocken,PA 19428-2959.United States1 5.3 The infiltration rate obtained by this method is validonly for the localized area of the pavement where the test isconducted.To determine the surface infiltration rate of theentire permeable pavement,multiple locations must be testedand the results averaged.5.4 The minimum acceptable infiltration rate is typicallyestablished by the design engineer of record or the municipalityand can be a function of the design precipitation event.6.Apparatus6.1 Infiltrat
