ASTM C 666-1992 混凝土抗快速冷冻和解冻特性的试验方法
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【英文标准名称】:TestMethodforResistanceofConcretetoRapidFreezingandThawing
【原文标准名称】:混凝土抗快速冷冻和解冻特性的试验方法
【标准号】:ASTMC666-1992
【标准状态】:作废
【国别】:美国
【发布日期】:1992
【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】:试验;建筑;混凝土;耐力;施工材料;冻结
【英文主题词】:construction;thawing;constructionmaterials;resistance;testing;freezing;concretes
【摘要】:
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:6P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforMeasuringtheFrictionalPropertiesofWinterContaminatedPavementSurfacesUsinganAveraging-TypeSpotMeasuringDecelerometer
【原文标准名称】:用平均型斑点测量减速计测量冬天受污染路面摩擦性能的标准试验方法
【标准号】:ASTME2101-2000(2005)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:E17.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airportrunwayfriction;braking;deceleration;decelerometer;tirepavementfriction;winterconditions
【摘要】:Knowledgeofthefrictionalpropertiesofawintercontaminatedpavementsurfaceisessentialtoevaluatethebrakingeffortofgroundvehiclesoraircraftoperatingonapavementsurface.Thepresenceofcontaminantsonapavementsurfacewillaffectthefrictionalpropertiesofthesurfaceinamannerwhichisdifficulttoevaluatebyvisualobservationalone.Thefrictionalpropertiesofawintercontaminatedpavementsurfacecanbecharacterizedusingaspotmeasuringdecelerometerwhichprovidesameasurementofthesurfacefrictionandassistswiththeevaluationofpavementwintermaintenancerequirements.Themeasurementsproducedbythistestmethodshouldnotbeusedasthesolecriteriatodeterminepavementwintermaintenancerequirements.Themeasurementswouldnormallybecombinedwithvisualandotherobservationstoprovideamorecompleteanalysisofthepavementsurfaceconditions.Acertainamountofdiscretionisrequiredonthepartoftheoperatorasthistestmethodprovidesonlyax201C;spotx201D;measurementofthesurfacecondition.Theobjectiveoftheoperatoristoidentifyareasofthewintercontaminatedpavementsurfacewhichmayhavelowerfrictionandthenobtainfrictionmeasurementsinthoseareas.Thismakesthetestmethodsomewhatconservativebynatureincomparisontotheactualfrictionpotential.Themeasurementsproducedbythistestmethodaredependentonthetestvehicleparametersandonthebrakingtechniqueofthevehicleoperator.1.1Thistestmethodcoversthemeasurementofthefrictionalpropertiesofwintercontaminatedpavementsurfacesusinganaveraging-typespotmeasuringdecelerometer.Themethodproducesareadingthatisproportionaltothedecelerationsustainedbyatestvehiclefittedwithpneumaticrubbertiresbrakingwithallwheelslocked.Africtionindexforasectionofwintercontaminatedpavementisdeterminedfromtheaverageofseveraldecelerationmeasurementsrecordedoverthesectionofwintercontaminatedpavement.1.2Thistestmethodisapplicabletoaveraging-typespotmeasuringdecelerometers.1.3Thistestmethodisapplicabletothefollowingwintercontaminatedpavementsurfaceconditions:1.3.1Ice;1.3.2Wetice(icecoveredwithathinfilmofmoistureofadepthinsufficienttocausehydroplaning);1.3.3Compactedsnow,anydepth;1.3.4Slushonice,slushnotexceeding3mm(0.1in.)indepth;1.3.5Loose,drysnow,notexceeding25mm(1in.)indepth;1.3.6Icecontrolchemicalsolutiononice;and1.3.7Sandonice.1.4Thistestmethodshallnotbeusedwhenthefollowingwintercontaminatedpavementsurfaceconditionsarepresent:1.4.1Wateronabarepavementsurface;1.4.2Slush;and1.4.3Loosesnowexceeding25mm(1in.)indepth.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareininch-poundunitsandarenotexactequivalents,therefore,eachsystemmustbeusedindependentoftheother,withoutcombiningvaluesinanyway.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:P66
【国际标准分类号】:13_020_40
【页数】:4P.;A4
【正文语种】:
基本信息
标准名称: | 牡蛎小胞虫病诊断规程 第1部分:组织印片的细胞学诊断法 |
英文名称: | Diagnostic Protocols for Mikrocytosis of Oyster-Part 1:Cytological Method with Tissue Imprints |
中标分类: |
农业、林业 >>
畜牧 >>
动物检疫、兽医与疫病防治 |
ICS分类: |
农业 >>
农业和林业 >>
动物饲养和繁殖
|
发布日期: | 2007-06-14 |
实施日期: | 2007-09-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 5 |
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前言
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所属分类: 农业 林业 畜牧 动物检疫 兽医与疫病防治 农业 农业和林业 动物饲养和繁殖