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ASTM D4220-1995(2007) 保存和运输土壤样品的标准实施规程

作者:标准资料网 时间:2024-04-28 01:21:41  浏览:8689   来源:标准资料网
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【英文标准名称】:StandardPracticesforPreservingandTransportingSoilSamples
【原文标准名称】:保存和运输土壤样品的标准实施规程
【标准号】:ASTMD4220-1995(2007)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:D18.02
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:施工材料;运输;保存;试样;土壤;建筑
【英文主题词】:preservation;soilsamples;transportation
【摘要】:Useofthevariousproceduresrecommendedinthesepracticesisdependentonthetypeofsamplesobtained(PracticeD420),thetypeoftestingandengineeringpropertiesrequired,thefragilityandsensitivityofthesoil,andtheclimaticconditions.Inallcases,theprimarypurposeistopreservethedesiredinherentconditions.Theprocedurespresentedinthesepracticeswereprimarilydevelopedforsoilsamplesthataretobetestedforengineeringproperties,however,theymaybeapplicableforsamplesofsoilandothermaterialsobtainedforotherpurposes.1.1Thesepracticescoverproceduresforpreservingsoilsamplesimmediatelyaftertheyareobtainedinthefieldandaccompanyingproceduresfortransportingandhandlingthesamples.1.2Limitations-Thesepracticesarenotintendedtoaddressrequirementsapplicabletotransportingofsoilsamplesknownorsuspectedtocontainhazardousmaterials.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection7.
【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】:


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【英文标准名称】:TestMethodforCompressivePropertiesofUnidirectionalorCrossplyFiber-ResinComposites
【原文标准名称】:单向的或交叉的纤维树脂混合料的压缩特性的试验方法
【标准号】:ASTMD3410-1987
【标准状态】:作废
【国别】:美国
【发布日期】:1987
【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】:航空运输;特性;材料;叠层板材;纤维;压力;树脂;航空航天运输;航天技术
【英文主题词】:fibres;materials;spacetechnology;airtransport;resins;laminates;properties;aerospacetransport;pressure
【摘要】:
【中国标准分类号】:G31
【国际标准分类号】:83_140
【页数】:10P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodsforMoisture-Density(UnitWeight)RelationsofSoil-CementMixtures
【原文标准名称】:水泥及土混合料的湿度-密度比率(单位重量)的标准试验方法
【标准号】:ASTMD558-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D18.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:密度;建筑;水泥;潮气;施工材料;试验;土壤
【英文主题词】:compaction;drydensity;optimumwatercontent;soil-cement;soil-stabilization;unitweight
【摘要】:Thesetestsdeterminetheoptimumwatercontentandmaximumdensity(unitweight)tobeusedformoldingsoil-cementspecimensinaccordancewithMethodsD559andD560.Note18212;SincethesetestsareusedinconjunctionwithMethodsD559andD560andthecriteriareferencedtherein,thetestdiffersinseveralaspectsfromTestMethodsD698.TherearethreemaindifferencesbetweenthisstandardandTestMethodD698.Firstly,thisstandardallowsamaximumparticlesizeofx00BE;-in.(19.0mm)fora4-in.(101.6-mm)moldwhileD698allowsamaximumparticlesizeof3/8-in.(9.5-mm)forthesamesizemold.Secondly,thisstandardpermitsthematerialleftoverafterthewatercontentspecimenhasbeenobtainedtobemixedwiththerestofthesampleandreusedforthenextdetermination.TestMethodD698doesnotpermitthematerialtobereused.Thirdly,thisstandardallowsthematerialthatisretainedonthex00BE;-in.(19.0-mm)andpassingthe3-in.(75-mm)tobediscarded(scalpingtechnique)andreplacedwithanequalmassofmaterialthatpassesthex00BE;-in.(19.0-mm)sieveandisretainedontheNo.4(4.75-mm)sieve.TestMethodD698doesnotpermitthescalpandreplacementtechnique.Note28212;Thequalityoftheresultproducedbythisstandardisdependentonthecompetenceofthepersonnelperformingit,andthesuitabilityoftheequipmentandfacilitiesused.AgenciesthatmeetthecriteriaofPracticeD3740aregenerallyconsideredcapableofcompetentandobjectivetesting/sampling/inspection/etc.UsersofthisstandardarecautionedthatcompliancewithPracticeD3740doesnotinitselfassurereliableresults.Reliableresultsdependonmanyfactors;PracticeD3740providesameansofevaluatingsomeofthosefactors.1.1Thesetestmethodscoverthedeterminationoftherelationshipbetweenthewatercontentandthedensityofsoil-cementmixtureswhencompactedbeforecementhydrationasprescribed.1.2A1/30-ft179;(944-cm179;)moldanda5.5-lb(2.49-kg)rammerdroppedfromaheightof12.0in.(30.5cm)areusedandtwomethods,dependingonsoilgradation,arecovered,asfollows:SectionsTestMethodA,usingsoilmaterialpassingaNo.4(4.75-mm)sieve.Thismethodshallbeusedwhen100%ofthesoilsamplepassestheNo.4(4.75-mm)sieve7TestMethodB,usingsoilmaterialpassinga3/4-in.(19.0-mm)sieve.ThismethodshallbeusedwhenpartofthesoilsampleisretainedontheNo.4(4.75-mm)sieve.Thistestmethodmaybeusedonlyonmaterialswith30%orlessretainedonthe3/4-in.(19.0-mm)sieve8

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