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1、翻译Lscope1.1Thistestmethodcoversthedeterminationsofdenisty,percentabsorption,andpercentvoidsinhardenedconcrete.1.2Thetextofthistestmethodreferencesnotesandfootnoteswhichprovideexplanatoryinformation.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasre
2、quirementsofthisstandard.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.范围1.1这个测试方法包括密度的确定,吸水率,和硬化混凝土中的孔隙率。1.2这个测试方法引用了一些提供解释信息的文本注释和脚注。这些注释和脚注(包括表和数据),不应当视为本标准的要求。1.3以国际单位值作为标准。2.SignificanceandUse2.1Thistestmethodisusefulindevelopingthedatarequiredfbrconversionsbet
3、weenmassandvolumefbrconcrete.Itcanbeusedtodetermineconformancewithspecificationsfbrconcreteandtoshowdifferencesfromplacetoplacewithinamassofconcrete.3.Apparatus3.1Balance,sensitiveto0.025%ofthemassofthespecimen.3.2Container,suitablefbrimmersingthespecimenandsuitablewirefbrsuspe
4、ndingthespecimeninwater.2.意义和应用2.1这个测试方法,在开发混凝土的质量和体积之间转换所需的数据方面是有帮助的。它可以用来确定符合混凝土规范,它也可以显示一,个混凝土内部各处质量的差异。3.仪器3.1样本质量精确到0.025%3.2容器(适合浸泡样本和合适的水位标线)4.TestSpecimen4.1Wheneverpossible,thesampleshallconsistofseveralindividualportionsofconcrete,eachtobetestedseparately.Theindividua
5、lportionsmaybepiecesofcylinders,cores,orbeamsofanydesiredshapeorsize,exceptthatthevolumeofeachportionshallbenotlessthan350cm'(orfbrnormalweightconcrete,approximately800g)andeachportionshallbefreefromobservablecracks,fissures,orshatterededges.1.1样本测试4.1样品尽可能由混凝土的几个独立的部分组成,每个部分单独
6、进行测试。各部分可能是任何所需形状或大小的一块柱面,核心,或者束,每个部分的体积不得少于350cm3(或正常重量的混凝土,大约是800g),并且每个部分从可观察到的裂缝、裂缝或破碎的辿缘都应当是自由。1.1Procedure1.2Oven-DryMass一Determinethemassoftheportions,anddryinanovenatatemperatureof100to110°Cfornotlessthan24h.Afterremovingeachspecimenfromtheoven,allowittocoolindryair(pre
7、ferablyinadesiccator)toatemperatureof20to25°Canddeterminethemass.Ifthespecimenwascomparativelydrywhenitsmasswasfirstdetermined,andthesecondmasscloselyagreeswiththefirst,consideritdry.Ifthespecimenwaswetwhenitsmasswasfirstdetermined,placeitintheovenforaseconddryingtreatmentof24h
8、andagaindeterminethemass.Ifthethirdvaluechecksthesecon