【英文标准名称】:StandardTestMethodforHydraulicConductivityofEssentiallySaturatedPeat
【原文标准名称】:基本饱和泥炭水渗导性的标准试验方法
【标准号】:ASTMD4511-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D18.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:施工材料;试验;泥炭
【英文主题词】:constant-headpermeability;hydraulicconductivity;peat;permeability;rigid-wallpermeameter;saturatedpeat
【摘要】:Valuesofhydraulicconductivitydeterminedbythistestmethodmaybeusefulinmakingroughpreliminaryestimatesoftheinitialratesofdrainageandcompressionofpeatdepositswhentheonlyeffectivestressincreaseonthedepositisthatresultingfromamoderate,gradualloweringofthewatertable.Evenunderlight,sustainedloads,peatwillundergodramaticvolumechangesthatinfluence(decrease)thehydraulicconductivityofthedepositbyseveralordersofmagnitude.Thistestmethoddoesnotofferprovisionsforthedeterminationoftherelationshipbetweenhydraulicconductivityandthevoidratioscorrespondingtoincreasingstresslevels.Therefore,thistestmethodisnotsuitableforapplicationsinvolvinggradeincreases,suchasembankmentconstructionorplacementofaccessbermsalongsidedrainageditches.Undisturbedspecimensfromapparentlyhomogeneouspeatdepositsatthesamelocationoftenexhibitsignificantlydifferenthydraulicconductivitypropertiesduetovariationsinmaterialcompositionandsamplingprocedure.Note18212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationofthehydraulicconductivity(permeability)ofessentiallysaturated,intactcylindricalspecimensofpeatwhenthehydraulicconductivityisgreaterthan110-7m/s(110-5cm/s).Duringthetest,thespecimensarecontainedinthecoreholder,orinright,regularcylindricalsectionscutfromthesamplingtubeinwhichtheywereoriginallyobtainedinthefield.1.2Hydraulicconductivityiscalculatedonthebasisofthemeasuredconstantflowratethroughthespecimenunderconstanthead.Forverification,flowratedeterminationsmaybemadeattwoormorevaluesofconstantheadwithcorrespondingcalculationsofhydraulicconductivity.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4AllobservedandcalculatedvaluesshallconformtotheguideforsignificantdigitsandroundingestablishedinPracticeD6026.1.4.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheuser''sobjectives,anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:D20
【国际标准分类号】:65_080
【页数】:5P.;A4
【正文语种】:
基本信息
| 标准名称： | 粮油机械 检验用锤片粉碎机 |
| 英文名称： | Grain and oil machine-Slice hammer smasher for inspection |
| 中标分类： |
食品 >>
食品加工机械 >>
粮食与油脂加工机械 |
| ICS分类： |
食品技术 >>
食品工业厂房和
|
| 发布部门： | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
| 发布日期： | 2010-09-26 |
| 实施日期： | 2011-03-01 |
| 首发日期： | 2010-09-26 |
| 作废日期： | |
| 主管部门： | 全国粮油标准化技术委员会 |
| 提出单位： | 国家粮食局 |
| 归口单位： | 全国粮油标准化技术委员会 |
| 起草单位： | 国家粮食储备局成都粮食储藏科学研究所、上海嘉定粮油仪器有限公司、台州伯利恒仪器有限公司 |
| 起草人： | 郭道林、毛根武、董德良、张华昌、庄健、林新光、丁建武 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2011-03-01 |
| 页数： | 13页 |
适用范围
本标准规定了粮油检验用锤片粉碎机的产品型号、技术要求、试验方法、检验规则、标志、标签、包装、运输和储存要求。
本标准适用于采用锤片高速撞击样品制备粉状试样的检验用粉碎机。
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所属分类： 食品 食品加工机械 粮食与油脂加工机械 食品技术 食品工业厂房和