ASTM D 4435-1984 岩石锚栓拉力的标准试验方法

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【英文标准名称】:MediaManagementSystem(MMS)-MediaManagementProtocol(MMP)
【原文标准名称】:媒体管理系统(MMS).媒体管理协议(MMP)
【标准号】:IEEE1244.3-2000
【标准状态】:作废
【国别】:美国
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国电气电子工程师学会(IEEE)
【起草单位】:IEEE
【标准类型】:()
【标准水平】:()
【中文主题词】:信息技术;定义;网络互连;管理;命令;电路网络;信息交换;计算机软件;接口;传输协议;错误信息;介质;对话设计;系统建筑学;电信;数据通信;语义学;句法;数据处理
【英文主题词】:
【摘要】:
【中国标准分类号】:M70
【国际标准分类号】:35_080
【页数】:114P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforHeatAgingofAsbestosTextiles
【原文标准名称】:石棉织物热老化的标准试验方法
【标准号】:ASTMD1573/D1573M-1995(2009)e1
【标准状态】:现行
【国别】:美国
【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】:C17.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aging;asbestos;heat;heat-aging;tensile;textile
【摘要】:Thistestmethodcoverstheevaluationofasbestostextileswithregardto(1)qualityand(2)elevatedtemperatureserviceabilitycharacteristics.Sinceasbestostextilesareusuallycomposedofblendsofasbestoswithcottonorotherorganiccarrierfibers,thelatterbeingpresentinamountsupto25%,temperaturesabove150x00B0;C[300x00B0;F]willpromotethedegradationofthecottoncontentandwillreducethestructuralreinforcementderivedtherefrom.Inthehighergradeasbestostextiles,whereinlittleornocarrierfibersareusedandinwhichthelongerasbestosfibersarenecessaryifasatisfactoryyarnistobeproduced,thedegradationinstrengthresultingfromheat-agingupto540x00B0;C[1000x00B0;F]islow.Inthecaseofthelowergradeasbestostextiles,however,whereinamountsfrom15to25%carrierfibersareincorporated,asbestosfibershavingshorterlengthsmaybeutilized.Undertherelativelylowservicetemperaturestowhichsuchmaterialsmaybesubjected,neitherthecottonnortheclothpropertiesaregreatlyaffected.However,thestrength-impartinginfluenceofthecarrierfibersisreducedatelevatedtemperaturesandtheentwiningpropertiesoftheshorterasbestosfibersprimarilyservetoestablishtheresultanttensilestrengthandotherphysicalpropertiesofthetextile.Inviewofthis,elevatedtemperaturetestsmayservetoindicatetheasbestosfibergradeorqualitythatmaybeusedinatextileconstruction.Anotheruseandperhapsmorepracticalapplicationfortheinformationtobederivedfromelevatedtemperaturestudiesistherevelationoftheabilityofasubjecttextiletowithstandknownelevatedtemperatureserviceconditions.Itwillbeappreciatedthattemperaturealonemaynotbetheonlydegratoryinfluenceinthedestructionofsuchmaterials;however,undernormaloperatingconditions,hightemperaturesareusuallythedominatingfactorsinsuchdegradation.Theresultsobtainedthroughsuchinvestigationsthereforemaybeinterpretedintermsofelevatedtemperatureserviceability.1.1Thistestmethodcoverstheheatagingofasbestostextiles.Itmaybeusedtodeterminetheresistancetothedeteriorationoftensilestrengthattemperaturesupto450x00B0;C[800x00B0;F].1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Warningx2014;Breathingofasbestosdustishazardous.Asbestosandasbestosproductspresentdemonstratedhealthrisksforusersandforthosewithwhomtheycomeintocontact.Inadditiontootherprecautions,whenworkingwithasbestos-cementproducts,minimizethedustthatresults.Forinformationonthesafeuseofchrysoltileasbestos,refertox201C;SafeUseofChrysotileAsbestos:AManualonPreventiveandControlMeasures.x201D;1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificsafetyhazard,see1.3.
【中国标准分类号】:Q61
【国际标准分类号】:59_060_30
【页数】:3P.;A4
【正文语种】:英语