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ASTM C90-2011a 承重混凝土圬工单位标准规格

作者:标准资料网 时间:2024-03-28 17:03:23  浏览:9723   来源:标准资料网
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【英文标准名称】:StandardSpecificationforLoadbearingConcreteMasonryUnits
【原文标准名称】:承重混凝土圬工单位标准规格
【标准号】:ASTMC90-2011a
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C15.03
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:吸收;耐压强度;混凝土圬工单位;等价网状物厚度;表面剥落;法兰;轻型的;线性干收缩;承载;中等重量;正常重量;网状物
【英文主题词】:absorption;compressivestrength;concretemasonryunits;equivalentwebthickness;faceshell;flange;lightweight;lineardryingshrinkage;loadbearing;mediumweight;normalweight;webs
【摘要】:1.1Thisspecificationcovershollowandsolid(see5.3and5.4)concretemasonryunitsmadefromhydrauliccement,water,andmineralaggregateswithorwithouttheinclusionofothermaterials.Therearethreeclassesofconcretemasonryunits:(1)normalweight,(2)mediumweight,and(3)lightweight.Theseunitsaresuitableforbothloadbearingandnonloadbearingapplications.1.2Concretemasonryunitscoveredbythisspecificationaremadefromlightweightornormalweightaggregates,orboth.1.3Thetextofthisspecificationreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthestandard.1.4Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.Note18212;Whenparticularfeaturesaredesiredsuchassurfacetexturesforappearanceorbond,finish,color,orparticularpropertiessuchasdensityclassification,highercompressivestrength,fireresistance,thermalperformanceoracousticalperformance,thesefeaturesshouldbespecifiedseparatelybythepurchaser.Suppliersshouldbeconsultedastotheavailabilityofunitshavingthedesiredfeatures.
【中国标准分类号】:
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:


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【英文标准名称】:StandardPracticeforSamplingIndustrialChemicals
【原文标准名称】:工业化学品抽样的标准规程
【标准号】:ASTME300-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:E15.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:sampling;simpleliquids;slurry;solids;statistical
【摘要】:Representativesamplesofindustrialchemicalsarerequiredforthedeterminationofchemicalandphysicalpropertieswhichareusedtoestablishstandardvolumes,prices,andcompliancewithcommercialandregulatoryspecifications.Theobjectiveofsamplingistoobtainasmallportion(spotsample)ofmaterialfromaselectedareawithinacontainerwhichisrepresentativeofthematerialintheareaor,inthecaseofrunningorall-levelsamples,asamplewhosecompositionisrepresentativeofthetotalmaterialinthecontainer.Aseriesofspotsamplesmaybecombinedtocreatearepresentativesample.ManualandAutomaticSamplingConsiderations8212;Theselectionofmanualorautomaticsamplingdevicesispartofestablishingasamplingplanappliedunderallconditionswithinthescopeofthispracticeprovidedthatthepropersamplingproceduresarefollowed.Bothtypesofsamplingarecommonlyusedforliquid,solid,andslurrysamplingandrequireadherencetothefollowing:5.3.1Anadequatefrequencyofsamplingmustbeselected.5.3.2Theequipmenttosupportmanualorautomaticsamplingsystemsmaybeobtainedcommercially,fabricatedfromthedesignspresentedinthispractice,orconstructedasneededtosatisfyprocessdesignorotherspecificrequirements.5.3.3Thesamplingequipmentmustbemaintainedonaregularbasis,andthesamplingplanadoptedmustbestrictlyfollowed.1.1Thispracticecoversproceduresforsamplingseveralclassesofindustrialchemicals.Italsoincludesrecommendationsfordeterminingthenumberandlocationofsuchsamples,toensuretheirbeingrepresentativeofthelotinaccordancewithacceptedprobabilitysamplingprinciples.1.2Althoughthispracticedescribesspecificproceduresforsamplingvariousliquids,solids,andslurries,inbulkorinpackages,theserecommendationsonlyoutlinetheprinciplestobeobserved.TheyshouldnottakeprecedenceoverspecificsamplinginstructionscontainedinotherASTMproductormethodstandards.1.3Theseproceduresarecoveredasfollows:SectionsStatisticalConsiderations7-11SimpleLiquids12-27Solids28-34Slurries36-41【英文标准名称】:Waterquality--Determinationofcyanide--Part4:DeterminationofcyanidebydiffusionatpH6
【原文标准名称】:水质.氰化物的测定.第4部分:pH为6时用扩散法对氰化物的测定
【标准号】:JISK0400-38-40-1999
【标准状态】:现行
【国别】:日本
【发布日期】:1999-08-20
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonEnvironmentandRecyclingPolicy
【标准类型】:()
【标准水平】:()
【中文主题词】:水;排水工程;含量测定;氰化物(无机);吸收分光光度测定法;质量;水污染
【英文主题词】:quality;;determinationofcontent;absorptionspectrophotometry;waterpollution;sewageengineering
【摘要】:この規格は,写真排水及び排水中の遊離シアン化物(3.参照)の定量する方法について規定する。この方法は,10~150μg/lの遊離シアンを含む水に適用できる。高濃度の場合は,試料の適切な希釈によって定量できる。応答は示した範囲で直線である。
【中国标准分类号】:C51
【国际标准分类号】:13_060_50
【页数】:11P;A4
【正文语种】:日语



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