【英文标准名称】:StandardTestMethodforUnconfinedCompressiveStrengthofCohesiveSoil
【原文标准名称】:粘土无侧限抗压强度的标准试验方法
【标准号】:ASTMD2166-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D18.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:粘土;抗压强度;建筑;施工材料;土壤;试验
【英文主题词】:cohesivesoil;sensitivity;strain-controlledloading;strength;stress-strainrelationships;unconfinedcompression
【摘要】:Theprimarypurposeoftheunconfinedcompressiontestistoquicklyobtainameasureofcompressivestrengthforthosesoilsthatpossesssufficientcohesiontopermittestingintheunconfinedstate.Samplesofsoilshavingslickensidedorfissuredstructure,samplesofsometypesofloess,verysoftclays,dryandcrumblysoilsandvarvedmaterials,orsamplescontainingsignificantportionsofsiltorsand,orboth(allofwhichusuallyexhibitcohesiveproperties),frequentlydisplayhighershearstrengthswhentestedinaccordancewithTestMethodD2850.Also,unsaturatedsoilswillusuallyexhibitdifferentshearstrengthswhentestedinaccordancewithTestMethodD2850.Iftestsonthesamesampleinbothitsintactandremoldedstatesareperformed,thesensitivityofthematerialcanbedetermined.Thismethodofdeterminingsensitivityissuitableonlyforsoilsthatcanretainastablespecimenshapeintheremoldedstate.Note28212;Forsoilsthatwillnotretainastableshape,avanesheartestorTestMethodD2850canbeusedtodeterminesensitivity.Note38212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfensurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thistestmethodcoversthedeterminationoftheunconfinedcompressivestrengthofcohesivesoilintheintact,remolded,orreconstitutedcondition,usingstrain-controlledapplicationoftheaxialload.1.2Thistestmethodprovidesanapproximatevalueofthestrengthofcohesivesoilsintermsoftotalstresses.1.3Thistestmethodisapplicableonlytocohesivematerialswhichwillnotexpelorbleedwater(waterexpelledfromthesoilduetodeformationorcompaction)duringtheloadingportionofthetestandwhichwillretainintrinsicstrengthafterremovalofconfiningpressures,suchasclaysorcementedsoils.Dryandcrumblysoils,fissuredorvarvedmaterials,silts,peats,andsandscannotbetestedwiththismethodtoobtainvalidunconfinedcompressionstrengthvalues.Note1Thedeterminationoftheunconsolidated,undrainedstrengthofcohesivesoilswithlateralconfinementiscoveredbyTestMethodD2850.1.4ThistestmethodisnotasubstituteforTestMethodD2850.1.5AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.5.1Theproceduresusedtospecifyhowdataarecollected/recordedandcalculatedinthistestmethodareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatshouldgenerallyberetained.Theproceduresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsiderationsfortheuser''sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatocommensuratewiththeseconsiderations.Itisbeyondthescopeofthistestmethodtoconsidersignificantdigitsusedinanalysismethodsforengineeringdesign.1.6ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesstatedininch-poundunitsareapproximate.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems......
【中国标准分类号】:P20
【国际标准分类号】:93_020
【页数】:6P.;A4
【正文语种】:
基本信息
| 标准名称： | 进出口化肥检验方法 火焰原子吸收光谱法测定钠量 |
| 英文名称： | Method of inspection for import and export fertilizers—Determination of sodium—Atomic absorption spectrophotometric method |
| 中标分类： |
化工 >>
化肥、农药 >>
化肥基础标准与通用方法 |
| 替代情况： | ZB G20010-87 |
| 发布部门： | 中华人民共和国国家进出口商品检验局 |
| 发布日期： | 1997-12-22 |
| 实施日期： | 1998-05-01 |
| 首发日期： | |
| 作废日期： | |
| 主管部门： | 中华人民共和国国家进出口商品检验局 |
| 提出单位： | 中华人民共和国进出口商品检验局 |
| 归口单位： | 中华人民共和国进出口商品检验局 |
| 起草单位： | 中华人民共和国湛江进出口商品检验局 |
| 起草人： | 蔡涨、谢敏 |
| 出版日期： | 1998-05-01 |
| 页数： | 4页 |
适用范围
本标准规定了测定进出口化肥中钠含量的方法。
本标准适用于氯化钾、硫酸钾、硝酸钾等钾类化肥中钠含量的测定。
前言
没有内容
目录
没有内容
引用标准
SN /T 0 736.1-1997 进出口化肥检验方法取样和制样
所属分类： 化工 化肥 农药 化肥基础标准与通用方法