ASTM C1148-1992a(2008) 测量砖石建筑用灰浆干缩性标准试验方法

作者:标准资料网 时间:2024-05-13 23:22:03  浏览:9165   来源:标准资料网

【英文标准名称】:StandardTestMethodforMeasuringtheDryingShrinkageofMasonryMortar
【原文标准名称】:测量砖石建筑用灰浆干缩性标准试验方法
【标准号】:ASTMC1148-1992a(2008)
【标准状态】:现行
【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(US-ASTM)
【起草单位】:C12.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:dryingshrinkage;masonry;mortar;unrestrained;Dryingshrinkage;Masonrymortarandgrout;Shrinkage--drying
【摘要】:Thedryingshrinkageofmortarasdeterminedbythistestmethodisameasureofthedecreaseinlengthoftestspecimensundercontrolleddryingconditions,afteraninitialperiodofmoistcuring.Sincetestspecimensarenotcompletelyunrestrainedduringtheinitialperiodofmoistcuring,measurementsofdryingshrinkagebythistestmethodaremostusefulforcomparativepurposesratherthanasabsolutevalues.Thedryingshrinkageofunrestrainedlaboratorytestedmortarsamplesisdifferentfromthatexperiencedinamasonrywallwhereinfluencesincluderestraint,masonryunitabsorption,ambienttemperatureandhumidity,thicknessofjoint,lengthofcontinuouswall,etc.1.1Thistestmethodcoversthemeasurementofunrestraineddryingshrinkageofmasonrymortars.1.2ThistestmethodisapplicabletoSpecificationC270TypeN,TypeS,andTypeMmortarsunderthepropertyorproportionspecifications.Duetothetendencytodamagelowerstrengthspecimensduringdemolding,itisnotapplicabletolowerstrengthmortars,suchasTypeOmortars.1.3Thistestmethodisintendedforresearchpurposesonly.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionstoinch-poundunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_10
【页数】:2P.;A4
【正文语种】:英语