【英文标准名称】:SpecificationforCentrifugallyCastCarbonSteelPipeforHigh-TemperatureService
【原文标准名称】:高温用离心铸造碳素钢管规范
【标准号】:ANSI/ASTMA660-1996
【标准状态】:作废
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:管;钢
【英文主题词】:pipes;steels
【摘要】:
【中国标准分类号】:H48
【国际标准分类号】:77_140_75
【页数】:
【正文语种】:英语


【英文标准名称】:Geotechnicalinvestigationandtesting-Laboratorytestingofsoil-Part4:Determinationofparticlesizedistribution
【原文标准名称】:土工勘查和检验.土壤的实验室检验.第4部分:粒径分布的测定
【标准号】:ISO/TS17892-4-2004
【标准状态】:现行
【国别】:国际
【发布日期】:2004-10
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/TC182
【标准类型】:()
【标准水平】:()
【中文主题词】:试验报告;含量测定;土壤;土壤普查;土壤试验;土壤采样;实验室试验;试验;含量;水;评定;土工学;建筑;粒度;定义;粒度分布;土方工程
【英文主题词】:Construction;Content;Definitions;Determinationofcontent;Earthworks;Evaluations;Geotechnics;Grainsize;Investigations;Laboratorytesting;Laboratorytests;Particlesizedistribution;Soilsampling;Soilsurveys;Soiltesting;Soils;Testing;Water
【摘要】:Thisdocumentdescribesmethodsforthedeterminationoftheparticlesizedistributionofsoilsamples.Theparticlesizedistributionisoneofthemostimportantphysicalcharacteristicsofsoil.Classificationofsoilsismainlybasedontheparticlesizedistribution.Manygeotechnicalandgeohydrologicalpropertiesofsoilarerelatedtotheparticlesizedistribution.Theparticlesizedistributionprovidesadescriptionofsoil,basedonasubdivisionindiscreteclassesofparticlesizes.Thesizeofeachclasscanbedeterminedbysievingand/orsedimentation.Forsoilswithlessthan10%fines,thesievingmethodisapplicable.Soilswithmorethan10%finescanbeanalysedbyacombinationofsievingandsedimentation.Sievingistheprocesswherebythesoilisseparatedinparticlesizeclassesbytheuseoftestsieves.Sedimentationistheprocessofthesettingofsoilparticlesinaliquid.Thedifferenceinsettlingrateenablestheparticlesizeclassestobeseparated.Twosedimentationmethodsaredescribed;thehydrometermethodandthepipettemethod.Themethodsdescribedareapplicabletoallnon-cementedsoilswithparticlesizeslessthan125mm.Dependingonthepurposeforthedeterminationoftheparticlesizedistribution,pretreatmentorcorrectionforcalciumcarbonate,dissolvedsaltsand/ororganicmattercanberequired.Theuseofthesemethodsshouldbestatedinthelaboratoryreport.Modernmethodsthatincorporatedetectionsystemsusingx-rays,laserbeams,densitymeasurementsandparticlecountersarenotcoveredbythisdocument.
【中国标准分类号】:P13
【国际标准分类号】:13_080_20;93_020
【页数】:26P.;A4
【正文语种】:英语