【英文标准名称】:StandardTestMethodforRelativeDensityofSolidPitchandAsphalt(DisplacementMethod)
【原文标准名称】:固体硬沥青和地沥青的相对密度标准试验方法(变位法)
【标准号】:ASTMD71-1994(2004)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D02.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:施工材料;施工材料;防水材料;地沥青;屋面油毡;沥青;水密材料;不渗透性;硬沥青(石油产品);密度;建筑;试验;沥青制品
【英文主题词】:asphalt;density;pitch;specificgravity;waterdisplacement
【摘要】:Thistestmethodisusefulincharacterizingpitchesandasphaltsasoneelementinestablishinguniformityofshipmentsandsourcesofsupply.1.1Thistestmethodcoversthedeterminationofrelativedensitybywaterdisplacementofhardpitchesandasphaltswithsofteningpointsabove70176C.1.2Therelativedensityofhardpitchandasphaltshallbedetermined,wheneverpossible,onhomogeneousnaturalfragmentsfreeofcracks.Theuseofcastcubesisnotrecommendedduetothedifficultyofavoidingincorporationofairbubbles.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E43
【国际标准分类号】:91_100_50;93_080_20
【页数】:2P.;A4
【正文语种】:


【英文标准名称】:Acoustics-Determinationofsoundpowerlevelsofnoisesourcesusingsoundpressure-Precisionmethodsforreverberationrooms
【原文标准名称】:声学.用声压测定噪声源的声级.混响室精确法
【标准号】:ANSI/ISO3741-1999
【标准状态】:作废
【国别】:美国
【发布日期】:1999
【实施或试行日期】:
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:规范(验收);发出的空气噪声;音量;数学计算;混响;混响室;测量;声学;声学试验;测量技术;声学测量;混响室法;声源;响度;测定;声级;噪声(环境的);声强;机器;测量仪器;定义;试验;噪声测量
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoiseemitted;Definition;Definitions;Determination;Loudnesslevel;Machines;Mathematicalcalculations;Measurement;Measuringinstruments;Measuringtechniques;Noise(environmental);Noisemeasurements;Reverberation;Reverberationroommethod;Reverberationrooms;Soundintensity;Soundlevel;Soundlevels;Soundsources;Specification(approval);Testing;Tests;Volume(sound)
【摘要】:Specifiesadirectmethodandacomparisonmethodfordeterminingthesoundpowerlevelthatwouldbeproducedbyasourceoperatinginanenvironmentatstandardmeteorologicalconditionscorrespondingtoacharacteristicimpedanceofpc=400N-s/m3(wherepisthedensityofairandcisthespeedofsound).Specifiestestroomrequirements,sourcelocationandgeneralrulesforoperatingconditions,instrumentationandtechniquesforobtaininganestimateofmean-squaresoundpressurelevels.
【中国标准分类号】:Z32
【国际标准分类号】:17_140_01
【页数】:
【正文语种】:英语