SAE J2854 User's Guide for the Six Month Old Infant Dummy - CRABI (EA-28)
时间:2024-05-15 06:25:48 来源: 标准资料网 作者：标准资料网 阅读：9976
Product Code:SAE J2854
Title:User's Guide for the Six Month Old Infant Dummy - CRABI (EA-28)
Issuing Committee:Dummy Testing And Equipment Committee
Scope: User's Guide for the Six Month Old Infant Dummy (CRABI)
Rationale: User's Guide for the Six Month Old Infant Dummy (CRABI)
【英文标准名称】:StandardTestMethodforWaterRetentionbyLiquidMembrane-FormingCuringCompoundsforConcrete
【原文标准名称】:混凝土用液膜养护材料保水性的标准试验方法
【标准号】:ASTMC156-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:C09.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:混凝土;建筑;施工材料;测试;吸水率
【英文主题词】:concretecuringmaterials;liquidmembrane-formingcuringcompounds;moistureretentionbyconcretecuringmaterials
【摘要】:Themoistureretainingabilityofaproductasdeterminedbythistestmethodisusedtoassessthesuitabilityofmaterialsforcontributingtoanappropriatecuringenvironmentforconcrete.Thelaboratorytestmethodisusedbothinformulatingandinspecifyingorqualifyingcuringproducts.Thistestmethodgivestheuserameasureoftheabilityoftestedcuringmaterialstoimpedetheescapeofmoisturefromahydrauliccementmortar.Sinceitisdesirabletoretainmoistureinfreshconcretetopromotethehydrationprocess,failureoftheproducttominimizetheescapeofmoisturemayleadtolossofstrength,cracking,shrinkage,orlowabrasionresistanceofthehardenedconcrete,oracombinationthereof.Manyfactorsaffectthelaboratorytestresults.Testresultsobtainedmaybehighlyvariableasindicatedbytheprecisionstatement.Criticalfactorsincludetheprecisionofthecontrolofthetemperature,humidityandaircirculationinthecuringcabinet,preparationandsealingofthemortarspecimens,theageandsurfaceconditionofthemortarspecimenwhenthecuringproductisapplied,andtheuniformityandquantityofapplicationofthecuringmembrane.1.1Thistestmethodcoverslaboratorydeterminationoftheefficiencyofliquidmembrane-formingcompoundsforcuringconcrete,asmeasuredbytheirabilitytoreducemoisturelossduringtheearlyhardeningperiod.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.(Freshhydrauliccementitiousmixturesarecausticandmaycausechemicalburnstoskinandtissueuponprolongedexposure.)
【中国标准分类号】:Q13
【国际标准分类号】:91_100_30
【页数】:5P.;A4
【正文语种】: