DIN 30692 T.1-1992 煤气燃烧装置和煤气分配装置的隔膜.均质弹性隔膜材料的要求和检验

上一篇: DIN 28052 T.1-1992 工艺流程设备中混凝土构件用非金属防护覆层和衬里.概念和选择标准
下一篇: DIN 30692 T.2-1992 煤气燃烧装置和煤气分配装置的隔膜.增强弹性隔膜材料的要求和检验

【英文标准名称】:StandardTestMethodforDeterminingTheRelativeDensity(SpecificGravity)AndAbsorptionOfFineAggregatesUsingInfrared
【原文标准名称】:相对密度(特殊重力)和用红外线对细集料吸收测定的标准测试方法
【标准号】:ASTMD7172-2006
【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】:D04.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:吸收;测定;细集料;重力;红外线;相对密度;试验
【英文主题词】:absorption;aggregate;apparentdensity;apparentrelativedensity;infrared;relativedensity;specificgravity
【摘要】:Bulkrelativedensity(specificgravity)isthecharacteristicgenerallyusedforcalculationofthevolumeoccupiedbytheaggregateinvariousmixturescontainingaggregateincludingPortlandcementconcrete,bituminousconcrete,andothermixturesthatareproportionedoranalyzedonanabsolutevolumebasis.Bulkrelativedensity(specificgravity)isusedinthecomputationofvoidsinaggregateinC1252andC29/C29M.Bulkrelativedensity(specificgravity)determinedonthesaturatedsurfacedry(SSD)basisisusediftheaggregateiswet,thatis,ifitsabsorptionhasbeensatisfied.Conversely,thebulkrelativedensity(specificgravity)determinedontheoven-drybasisisusedforcomputationswhentheaggregateisdryorassumedtobedry.Apparentrelativedensity(specificgravity)pertainstotherelativedensityofthesolidmaterialmakinguptheconstituentparticlesnotincludingtheporespacewithintheparticlesthatisaccessibletowater.Thisvalueisnotwidelyusedinconstructionaggregatetechnology.Waterabsorptionvaluesareusedtocalculatethechangeinthemassofanaggregateduetowaterabsorbedintheporespaceswithintheconstituentparticles,comparedtothedrycondition,whenitisdeemedthattheaggregatehasbeenincontactwithwaterlongenoughtosatisfymostoftheabsorptionpotential.Thelaboratorystandardforabsorptionisthatobtainedaftersubmergingdryaggregateforapproximately24hoursinwater.Aggregatesminedfrombelowthewatertablemayhaveahigherabsorptionwhenused,ifnotallowedtodry.Conversely,someaggregateswhenusedmaycontainanamountofabsorbedmoisturelessthanthe24hourssoakedcondition:Foranaggregatethathasbeenincontactwithwaterandthathadfreemoistureontheparticlesurface,thepercentageoffreemoisturecanbedeterminedbydeductingtheabsorptionfromthetotalmoisturecontentdeterminedaccordingtoC566bydrying.1.1Thistestmethodcoversthedeterminationoftherelativedensity(specificgravity)andabsorptionoffineaggregates.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Lightingforbuildings-Codeofpracticefordaylighting
【原文标准名称】:建筑用照明设备.日光照明用实施规则
【标准号】:BS8206-2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-09-30
【实施或试行日期】:2008-09-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:建筑设计;建筑物;日照因素;设计;设计计算;能量消耗;眩光;照度;室内照明;照明标准;照明设备;自然采光;反射系数;天窗;结构设计;阳光;透射率;窗
【英文主题词】:Architecturaldesign;Buildings;Daylightfactor;Design;Designcalculations;Energyconsumption;Glare;Illuminance;Interiorlighting;Lightinglevels;Lightingsystems;Naturallighting;Reflectionfactor;Rooflights;Structuraldesign;Sunlighting;Transmittance;Windows
【摘要】:ThispartofBS8206givesrecommendationsregardingdesignfordaylightinbuildings.Itincludesrecommendationsonthedesignofelectriclightingwhenusedinconjunctionwithdaylight.NOTEDatafordaylightandsunlightcalculationsaregiveninAnnexA.
【中国标准分类号】:K70
【国际标准分类号】:91_060_50;91_160_10
【页数】:56P.;A4
【正文语种】:英语