NF T31-210-2-1995 颜料和稀释剂.色散特性评定用色散方法.第2部分:用振荡摇动机色散

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【英文标准名称】:StandardPracticeforDescriptionandIdentificationofSoils(Visual-ManualProcedure)
【原文标准名称】:土壤描述和鉴别的标准实施规程(目测-手工操作程序)
【标准号】:ASTMD2488-2009a
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D18.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:classification;clay;gravel;organicsoils;sand;silt;soilclassification;soildescription;visualclassification;Clay;Description/descriptiveanalysis;Gravel;Identification;Organicsoils;Sand;Silt;Soil;Soilclassification;Visualexamination
【摘要】:Thedescriptiveinformationrequiredinthispracticecanbeusedtodescribeasoiltoaidintheevaluationofitssignificantpropertiesforengineeringuse.ThedescriptiveinformationrequiredinthispracticeshouldbeusedtosupplementtheclassificationofasoilasdeterminedbyTestMethodD2487.ThispracticemaybeusedinidentifyingsoilsusingtheclassificationgroupsymbolsandnamesasprescribedinTestMethodD2487.SincethenamesandsymbolsusedinthispracticetoidentifythesoilsarethesameasthoseusedinTestMethodD2487,itshallbeclearlystatedinreportsandallotherappropriatedocuments,thattheclassificationsymbolandnamearebasedonvisual-manualprocedures.Thispracticeistobeusednotonlyforidentificationofsoilsinthefield,butalsointheoffice,laboratory,orwhereversoilsamplesareinspectedanddescribed.Thispracticehasparticularvalueingroupingsimilarsoilsamplessothatonlyaminimumnumberoflaboratorytestsneedberunforpositivesoilclassification.Note48212;Theabilitytodescribeandidentifysoilscorrectlyislearnedmorereadilyundertheguidanceofexperiencedpersonnel,butitmayalsobeacquiredsystematicallybycomparingnumericallaboratorytestresultsfortypicalsoilsofeachtypewiththeirvisualandmanualcharacteristics.Whendescribingandidentifyingsoilsamplesfromagivenboring,testpit,orgroupofboringsorpits,itisnotnecessarytofollowalloftheproceduresinthispracticeforeverysample.Soilswhichappeartobesimilarcanbegroupedtogether;onesamplecompletelydescribedandidentifiedwiththeothersreferredtoassimilarbasedonperformingonlyafewofthedescriptiveandidentificationproceduresdescribedinthispractice.ThispracticemaybeusedincombinationwithPracticeD4083whenworkingwithfrozensoils.Note58212;Notwithstandingthestatementsonprecisionandbiascontainedinthisstandard:Theprecisionofthistestmethodisdependentonthecompetenceofthepersonnelperformingitandthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting.UsersofthistestmethodarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliabletesting.Reliabletestingdependsonseveralfactors;PracticeD3740providesameansforevaluatingsomeofthosefactors.1.1Thispracticecoversproceduresforthedescriptionofsoilsforengineeringpurposes.1.2Thispracticealsodescribesaprocedureforidentifyingsoils,attheoptionoftheuser,basedontheclassificationsystemdescribedinTestMethodD2487.Theidentificationisbasedonvisualexaminationandmanualtests.Itmustbeclearlystatedinreportinganidentificationthatitisbasedonvisual-manualprocedures.1.2.1Whenpreciseclassificationofsoilsforengineeringpurposesisrequired,theproceduresprescribedinTestMethodD2487shallbeused.1.2.2Inthispractice,theidentificationportionassigningagroupsymbolandnameislimitedtosoilparticlessmallerthan3in.(75mm).1.2.3Theidentificationportionofthispracticeislimitedtonaturallyoccurringsoils(eitherintactordisturbed).Note18212;Thispracticemaybeusedasadescriptivesystemappliedtosuchmaterialsasshale,claystone,shells,crushedrock,etc.(see......
【中国标准分类号】:P13
【国际标准分类号】:93_020
【页数】:11P.;A4
【正文语种】:英语


【英文标准名称】:StandardSpecificationforNi-Fe-Cr-Mo-CuAlloy(UNSN08825andUNSN08221)*Plate,Sheet,andStrip
【原文标准名称】:镍铁铬钼铜合金(UNSN08825和UNSN08221)板、薄板及带材标准规范
【标准号】:ASTMB424-1998
【标准状态】:作废
【国别】:美国
【发布日期】:1998
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:薄板材;铬;镍;合金;带材;钼;铁;配件;板;铜
【英文主题词】:iron;alloys;chromium;nickel;fittings;molybdenum;copper;plates;sheetmaterials;strips
【摘要】:
【中国标准分类号】:H62
【国际标准分类号】:77_150_40
【页数】:7P;A4
【正文语种】:英语