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【英文标准名称】:StandardTestMethodsforSamplingandTestingFlyAshorNaturalPozzolansforUseinPortland-CementConcrete
【原文标准名称】:硅酸盐水泥混凝土中使用的飞灰或天然火山灰的取样和试验用标准试验方法
【标准号】:ASTMC311-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:C09.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:飞灰;天然火山灰;硅酸盐水泥混凝土(PCC);火山灰;煅烧火山灰;混凝土外加剂;细度;飞灰和其他火山灰
【英文主题词】:flyash;naturalpozzolan;Portlandcementconcrete(PCC);Pozzolans;Calcinedpozzolans;Concreteadmixtures;Fineness;Flyashandotherpozzolans
【摘要】:ThesetestmethodsareusedtodevelopdataforcomparisonwiththerequirementsofSpecificationC618.Thesetestmethodsarebasedonstandardizedtestinginthelaboratoryandarenotintendedtosimulatejobconditions.StrengthActivityIndex8212;Thetestforstrengthactivityindexisusedtodeterminewhetherflyashornaturalpozzolanresultsinanacceptablelevelofstrengthdevelopmentwhenusedwithhydrauliccementinconcrete.Sincethetestisperformedwithmortar,theresultsmaynotprovideadirectcorrelationofhowtheflyashornaturalpozzolanwillcontributetostrengthinconcrete.ChemicalTests8212;Thechemicalcomponentdeterminationsandthelimitsplacedoneachdonotpredicttheperformanceofaflyashornaturalpozzolanwithhydrauliccementinconcrete,butcollectivelyhelpdescribecompositionanduniformityofthematerial.1.1Thesetestmethodscoverproceduresforsamplingandtestingflyashandraworcalcinedpozzolansforuseinportland-cementconcrete.1.2Theproceduresappearinthefollowingorder:
Sections
Sampling
7
CHEMICALANALYSIS
Reagentsandapparatus
10
Moisturecontent
11and12
Lossonignition
13and14
Silicondioxide,aluminumoxide,ironoxide,calciumoxide,magnesiumoxide,sulfurtrioxide,sodiumoxideandpotassiumoxide
15
Availablealkali
16and17
Ammonia
18
PHYSICALTESTS
Density
19
Fineness
20
Increaseofdryingshrinkageofmortarbars
21-23
Soundness
24
Air-entrainmentofmortar
25and26
Strengthactivityindexwithportlandcement
27-30
Waterrequirement
31
EffectivenessofFlyAshorNaturalPozzolaninControllingAlkali-SilicaReactions
32
EffectivenessofFlyAshorNaturalPozzolaninContributingtoSulfateResistance
34