作者:标准资料网 时间:2024-05-19 06:30:53   浏览:9738   来源:标准资料网

【英文标准名称】:StandardPracticeforMakingandCuringTestSpecimensforEvaluatingResistanceofCoarseAggregatetoFreezingandThawinginAir-EntrainedConcrete
【原文标准名称】:在速冻和速融加气混凝土中用于评估粗集料抗霜冻性制造和固化的试样用标准规范
【标准号】:ASTMC1646/C1646M-2008a
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:C09.67
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:dry-mixshotcrete,materialsfor;ordering;shotcrete;specification;testing;wet-mixshotcrete;Concreteconstructionmaterials/applications--specifications;Dry-mixshotcrete;Shotcrete;Wet-mixshotcrete
【摘要】:Thispracticeprovidesstandardrequirementsforevaluatingfrost-susceptiblecoarseaggregateinair-entrainedconcretesubjectedtofreezingandthawinginaccordancewithTestMethodC666/C666M.Concretecontainingfrost-resistantpastemaynotberesistanttofreezingandthawingifitcontainscoarseaggregatethatbecomescriticallysaturated.Anaggregateparticleisconsideredtobecriticallysaturatedwhenthereisinsufficientunfilledporespacetoaccommodatetheexpansionofwaterthataccompaniesthefreezing.ThepotentialofthecoarseaggregatetocausedamageduetocyclesoffreezingandthawingisevaluatedbyTestMethodC666/C666M.1.1Thisspecificationcoversmaterialsforuseinhydraulic-cementconcretemixturestobeplacedbyshotcreting.Itdoesnotcovermixing,placement,curing,orprotectionoftheconcreteplacedbyshotcreting.1.2Thisspecificationcoversmaterialsforbothwet-mixanddry-mixshotcreting.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthestandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:3P.;A4
【正文语种】:英语