ASTM C948-1981(2009) 玻璃纤维增强混凝土薄剖面的干燥和潮湿松密度、吸水和表观气孔率用标准试验方法
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【英文标准名称】:StandardTestMethodforDryandWetBulkDensity,WaterAbsorption,andApparentPorosityofThinSectionsofGlass-FiberReinforcedConcrete
【原文标准名称】:玻璃纤维增强混凝土薄剖面的干燥和潮湿松密度、吸水和表观气孔率用标准试验方法
【标准号】:ASTMC948-1981(2009)
【标准状态】:现行
【国别】:
【发布日期】:1981
【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】:C27.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:密度-混凝土;玻璃纤维增强混凝土(GFRC);气孔率-表观;薄材料规范/应用;吸水-砖块/粘土混凝土
【英文主题词】:Density--concrete;Glassfiberreinforcedconcrete(GFRC);Porosity--apparent;Thinmaterialspecimens/applications--concrete;Waterabsorption--brick/clay/concreteproducts
【摘要】:Materialpropertiesdeterminedbythistestmethodareusefulforqualitycontrolofglass-fiberreinforcedconcrete,ascertainingcompliancewithgoverningspecifications,andresearchanddevelopment.1.1Thistestmethodcoversthedeterminationsofdryandwetbulkdensity,waterabsorption,andapparentporosityofthinsectionsofglass-fiberreinforcedconcrete.Note18212;Thistestmethoddoesnotinvolveadeterminationofabsolutespecificgravity.Therefore,suchporespaceasmaybepresentinthespecimenthatisnotemptiedduringthespecifieddryingorisnotfilledwithwaterduringthespecifiedimmersionisconsideredx201C;impermeablex201D;andisnotdifferentiatedfromthesolidportionofthespecimenforthecalculations,especiallythoseforpercentvoids.Dependingupontheporesizedistributionandtheporeentryradiiofthespecimenandonthepurposesforwhichthetestresultsaredesired,theproceduresofthismethodmaybeadequate,ortheymaybeinsufficientlyrigorous.Intheeventthatitisdesiredtofillmoreoftheporesthanwillbefilledbyimmersion,varioustechniquesinvolvingtheuseofvacuumtreatmentorincreasedpressuremaybeused.Ifarigorousmeasureoftotalporespaceisdesired,thiscanonlybeobtainedbydeterminingabsolutespecificgravitybyfirstreducingthesampletodiscreteparticles,eachofwhichissufficientlysmallsothatnoimpermeablespacecanexistwithinanyoftheparticles.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:91_100_30
【页数】:2P.;A4
【正文语种】:
【原文标准名称】:玻璃纤维增强混凝土薄剖面的干燥和潮湿松密度、吸水和表观气孔率用标准试验方法
【标准号】:ASTMC948-1981(2009)
【标准状态】:现行
【国别】:
【发布日期】:1981
【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】:C27.40
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:密度-混凝土;玻璃纤维增强混凝土(GFRC);气孔率-表观;薄材料规范/应用;吸水-砖块/粘土混凝土
【英文主题词】:Density--concrete;Glassfiberreinforcedconcrete(GFRC);Porosity--apparent;Thinmaterialspecimens/applications--concrete;Waterabsorption--brick/clay/concreteproducts
【摘要】:Materialpropertiesdeterminedbythistestmethodareusefulforqualitycontrolofglass-fiberreinforcedconcrete,ascertainingcompliancewithgoverningspecifications,andresearchanddevelopment.1.1Thistestmethodcoversthedeterminationsofdryandwetbulkdensity,waterabsorption,andapparentporosityofthinsectionsofglass-fiberreinforcedconcrete.Note18212;Thistestmethoddoesnotinvolveadeterminationofabsolutespecificgravity.Therefore,suchporespaceasmaybepresentinthespecimenthatisnotemptiedduringthespecifieddryingorisnotfilledwithwaterduringthespecifiedimmersionisconsideredx201C;impermeablex201D;andisnotdifferentiatedfromthesolidportionofthespecimenforthecalculations,especiallythoseforpercentvoids.Dependingupontheporesizedistributionandtheporeentryradiiofthespecimenandonthepurposesforwhichthetestresultsaredesired,theproceduresofthismethodmaybeadequate,ortheymaybeinsufficientlyrigorous.Intheeventthatitisdesiredtofillmoreoftheporesthanwillbefilledbyimmersion,varioustechniquesinvolvingtheuseofvacuumtreatmentorincreasedpressuremaybeused.Ifarigorousmeasureoftotalporespaceisdesired,thiscanonlybeobtainedbydeterminingabsolutespecificgravitybyfirstreducingthesampletodiscreteparticles,eachofwhichissufficientlysmallsothatnoimpermeablespacecanexistwithinanyoftheparticles.1.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Q23
【国际标准分类号】:91_100_30
【页数】:2P.;A4
【正文语种】:
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