HB 3143-2000 空心丝杆
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基本信息
标准名称: | 空心丝杆 |
中标分类: | 航空、航天 >> 航空运输与地面设备 >> 机场地面服务系统及设备 |
替代情况: | HB 3143-1987 |
发布日期: | 2000-09-21 |
实施日期: | 2001-01-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
出版日期: | 1900-01-01 |
适用范围
未出版
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 航空 航天 航空运输与地面设备 机场地面服务系统及设备
下载地址: 点击此处下载
【英文标准名称】:StandardPracticeforMeasuringHydrationKineticsofHydraulicCementitiousMixturesUsingIsothermalCalorimetry
【原文标准名称】:采用等温热量测定法测量液压水泥混合物水化反应动力的标准实施规程
【标准号】:ASTMC1679-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C09.48
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:cement-admixtureinteractions;hydrationkinetics;hydrationperformance;isothermalcalorimetry;sulfatedepletion;Calorimetry;Hydrationkinetics;Hydrauliccement;Isothermalconditions/testing
【摘要】:Thermalpowercurvesareusedtoevaluatetheisothermalhydrationkineticsofthecombinedmixtureofdifferentmaterialsduringtheearlyperiodafterbeingmixedwithwater.Theseisothermalpowercurves,orhydrationprofiles,mayprovideindicationsrelativetosettingcharacteristics,compatibilityofdifferentmaterials,sulfatebalanceandearlystrengthdevelopment.Theisothermalhydrationprofilescanalsobeusedtoevaluatetheeffectsofcompositions,proportions,andtimeofadditionofmaterialsaswellascuringtemperature.Specialcaremustbeusedinevaluatingextendedretardationwithpastespecimens,whichhavebeenshowntooverestimatetheretardationofsomemixturescontainingcement,SCM,andadmixtures.Thisprocedurecanbeusedtomeasuretheeffectofchemicaladmixturesonthecementhydrationprofile.Inmanycases,theadditionofchemicaladmixturechangesthekineticsofcementhydration.Althoughthistechniquehasbeenusedhistoricallytounderstandissuesrelatedtosettingandslumploss,itmustbeemphasizedthatisothermalcalorimetryresultscannotpredictconcreteperformancedefinitely,eitherpositivelyornegatively.Extensiveverificationinconcreteatplanneddosagesandtemperatures,andathigherdosages,isneeded.Isothermalcalorimetryisaneffectivetooltoidentifysensitivities,sothatconcretetestingcanbeefficientlyplannedandperformed.Thispracticeprovidesameansofassessingtherelativehydrationperformanceofvarioustestmixturescomparedwithcontrolmixturesthatarepreparedinasimilarmanner.Theprocedureandapparatuscanbeusedtomonitorthethermalpowerfrompastesandmortarsaloneorincombinationwithchemicaladmixtures.TheisothermalcalorimeterdescribedherecanbeusedtomeasurethethermalpowerandheatofhydrationofmortarspreparedindependentlyorobtainedbywetsievingfromconcreteinaccordancewithPracticeC172.1.1Thispracticedescribestheapparatusandprocedureformeasuringrelativedifferencesinhydrationkineticsofhydrauliccementitiousmixtures,eitherinpasteormortar(SeeNote1),includingthosecontainingadmixtures,varioussupplementarycementitiousmaterials(SCM),andotherfinematerialsbymeasuringthethermalpowerusinganisothermalcalorimeter.Note18212;Pastespecimensareoftenpreferredformechanisticresearchwhendetailsofindividualreactionpeaksareimportantorforparticularcalorimetryconfigurations.Mortarspecimensmaygiveresultsthathavebettercorrelationwithconcretesettingandearlystrengthdevelopmentandareoftenpreferredtoevaluatedifferentmixtureproportionsforconcrete.Bothpasteandmortarstudieshavebeenfoundtobeeffectiveinevaluatingconcretefieldproblemsduetoincompatibilityofmaterialsusedinconcretemixtures.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning8212;Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:14P.;A4
【正文语种】:英语
【原文标准名称】:采用等温热量测定法测量液压水泥混合物水化反应动力的标准实施规程
【标准号】:ASTMC1679-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:C09.48
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:cement-admixtureinteractions;hydrationkinetics;hydrationperformance;isothermalcalorimetry;sulfatedepletion;Calorimetry;Hydrationkinetics;Hydrauliccement;Isothermalconditions/testing
【摘要】:Thermalpowercurvesareusedtoevaluatetheisothermalhydrationkineticsofthecombinedmixtureofdifferentmaterialsduringtheearlyperiodafterbeingmixedwithwater.Theseisothermalpowercurves,orhydrationprofiles,mayprovideindicationsrelativetosettingcharacteristics,compatibilityofdifferentmaterials,sulfatebalanceandearlystrengthdevelopment.Theisothermalhydrationprofilescanalsobeusedtoevaluatetheeffectsofcompositions,proportions,andtimeofadditionofmaterialsaswellascuringtemperature.Specialcaremustbeusedinevaluatingextendedretardationwithpastespecimens,whichhavebeenshowntooverestimatetheretardationofsomemixturescontainingcement,SCM,andadmixtures.Thisprocedurecanbeusedtomeasuretheeffectofchemicaladmixturesonthecementhydrationprofile.Inmanycases,theadditionofchemicaladmixturechangesthekineticsofcementhydration.Althoughthistechniquehasbeenusedhistoricallytounderstandissuesrelatedtosettingandslumploss,itmustbeemphasizedthatisothermalcalorimetryresultscannotpredictconcreteperformancedefinitely,eitherpositivelyornegatively.Extensiveverificationinconcreteatplanneddosagesandtemperatures,andathigherdosages,isneeded.Isothermalcalorimetryisaneffectivetooltoidentifysensitivities,sothatconcretetestingcanbeefficientlyplannedandperformed.Thispracticeprovidesameansofassessingtherelativehydrationperformanceofvarioustestmixturescomparedwithcontrolmixturesthatarepreparedinasimilarmanner.Theprocedureandapparatuscanbeusedtomonitorthethermalpowerfrompastesandmortarsaloneorincombinationwithchemicaladmixtures.TheisothermalcalorimeterdescribedherecanbeusedtomeasurethethermalpowerandheatofhydrationofmortarspreparedindependentlyorobtainedbywetsievingfromconcreteinaccordancewithPracticeC172.1.1Thispracticedescribestheapparatusandprocedureformeasuringrelativedifferencesinhydrationkineticsofhydrauliccementitiousmixtures,eitherinpasteormortar(SeeNote1),includingthosecontainingadmixtures,varioussupplementarycementitiousmaterials(SCM),andotherfinematerialsbymeasuringthethermalpowerusinganisothermalcalorimeter.Note18212;Pastespecimensareoftenpreferredformechanisticresearchwhendetailsofindividualreactionpeaksareimportantorforparticularcalorimetryconfigurations.Mortarspecimensmaygiveresultsthathavebettercorrelationwithconcretesettingandearlystrengthdevelopmentandareoftenpreferredtoevaluatedifferentmixtureproportionsforconcrete.Bothpasteandmortarstudieshavebeenfoundtobeeffectiveinevaluatingconcretefieldproblemsduetoincompatibilityofmaterialsusedinconcretemixtures.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Warning8212;Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q11
【国际标准分类号】:91_100_10
【页数】:14P.;A4
【正文语种】:英语
基本信息
标准名称: | 起重机 司机室 第1部分:总则 |
英文名称: | Cranes - Cabins - Part 1: General |
中标分类: | 机械 >> 通用机械与设备 >> 起重机械 |
ICS分类: | 材料储运设备 >> 起重设备 >> 起重机 |
发布部门: | 国家质量监督检验检疫总局和标准货管理委员会 |
发布日期: | 2006-07-19 |
实施日期: | 2007-01-01 |
首发日期: | 2006-07-19 |
作废日期: | 1900-01-01 |
主管部门: | 中国机械工业联合会 |
提出单位: | 中国机械工业联合会 |
归口单位: | 全国起重机械标准化技术委员会 |
起草单位: | 北京起重运输机械研究所 |
起草人: | 赵春晖 |
出版社: | 中国标准出版社 |
出版日期: | 2007-01-01 |
页数: | 6页 |
计划单号: | 20031097-T-604 |
适用范围
GB/T 20303的本部分规定了按ISO 4306-1定义的各种起重机的司机室的一般要求。它考虑了司机室的使用条件。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类: 机械 通用机械与设备 起重机械 材料储运设备 起重设备 起重机