【英文标准名称】:StandardSpecificationforConcretePipeforIrrigationorDrainage
【原文标准名称】:灌溉或排水用混凝土管道的标准规范
【标准号】:ASTMC118-2005a
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C13.01
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:混凝土;建筑;施工材料;排水;灌溉;管
【英文主题词】:absorption;acceptancecriteria;concrete;design;drainage;hydrostatic;irrigation;joints;manufacture;nonreinforced;pipe;pressure;tests;three-edgebearing
【摘要】:1.1Thisspecificationcoversnonreinforcedconcretepipetobeusedfortheconveyanceofirrigationwaterwithworkingpressures,includinghydraulictransients,asshowninTable1andforuseindrainage.1.2AcompleteSIcompaniontoSpecificationC118hasbeendeveloped8212;C118M;therefore,noSIequivalentsarepresentedinthisspecification.Note182`12;Thisspecificationisformanufacturingandpurchaseonlyanddoesnotincluderequirementsforbedding,backfill,installation,orfieldrepairs.Theowneriscautionedthathemustcorrelatefieldconditionswiththecharacteristicsofthepipespecifiedandprovideinspectionduringinstallation.
【中国标准分类号】:Q14
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:StandardTestMethodforRubberDeterioration-DiscolorationfromUltraviolet(UV)andHeatExposureofLight-ColoredSurfaces
【原文标准名称】:橡胶变质的标准试验方法.暴露紫外线(UV)和热辐射的浅颜色表面退色
【标准号】:ASTMD1148-2007a
【标准状态】:现行
【国别】:
【发布日期】:2007
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D11.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:炭黑;着色的;变质;热学;天然橡胶;橡胶;表面;合成橡胶;测试
【英文主题词】:fluorescentUV;heatdiscoloration;rubberproducts;ultraviolet;ultravioletlightdiscoloration;UVA-340;xenonarc
【摘要】:Thesurfaceofwhiteorlight-coloredvulcanizedrubberarticles,orvulcanizedrubbercoveredwithanorganicfinish,maydiscolorwhenexposedtoconditionsofhumidity,ormoisture,heat,andsunlight.Thischangeincoloroflight-coloredrubbersurfacesisobjectionabletotheconsumer.Resultsobtainedshouldbetreatedonlyasindicatingtheeffectofirradiancefromthespecifiedsource(eitherUVA-340lampsoraxenonarcwithaDaylightFilter)andnotasequivalenttotheresultofanynaturalexposure,unlessthedegreeofquantitativecorrelationhasbeenempiricallyestablishedforthematerialinquestion.Thistestmethodmaybeusedforproducer-consumeracceptance,refereepurposes,andresearchanddevelopmentwork.1.1Thistestmethodcoverstechniquestoevaluatethesurfacediscolorationofwhiteorlight-coloredvulcanizedrubberthatmayoccurwhensubjectedtoUVorUV/visibleexposurefromspecifiedsourcesundercontrolledconditionsofrelativehumidity,ormoisture,andtemperature.1.2Thistestmethodalsodescribeshowtoqualitativelyevaluatethedegreeofdiscolorationproducedundersuchconditions.1.3Theterm"discoloration"appliestoacolorchangeoftherubbersample,asdistinguishedfromstaining(see),thatreferstoacolorchangeofametalfinishincontactwithoradjacenttotherubberspecimen.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.TestsforstainingarecoveredbyTestMethodsD925.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:4P.;A4
【正文语种】: