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ID:21815412
大小:80.50 KB
页数:6页
时间:2018-10-24
《美国材料试验标准中文翻译》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、翻译1.scope1.1Thistestmethodcoversthedeterminationsofdenisty,percentabsorption,andpercentvoidsinhardenedconcrete.1.2Thetextofthistestmethodreferencesnotesandfootnoteswhichprovideexplanatoryinformation.Thesenotesandfootnotes(excludingthoseintablesandfig
2、ures)shallnotbeconsideredasrequirementsofthisstandard.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.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(ti拈表和数据),不应当视为本标准的要求。1.3以国际单位值作为标准。SignificanceandUseThistestmethodi
3、susefulindevelopingthedatarequiredforconversionsbetweenmassandvolumeforconcrete.Itcanbeusedtodetermineconformancewithspecificationsforconcreteandtoshowdifferencesfromplacetoplacewithinamassofconcrete.ApparatusBalance,sensitiveto0.025%ofthemassofthesp
4、ecimen.Container,suitableforimmersingthespecimenandsuitablewireforsuspendingthespecimeninwater.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裾方而是有帮助的。它可以用来确定符合浞凝土规范,它也可以显示一个浞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(适合浸泡样木和合适的水位标线)4.TestSpecimen4.1Wheneverpossibl
5、e,thesampleshallconsistofseveralindividualportionsofconcrete,eachtobetestedseparately.Theindividualportionsmaybepiecesofcylinders,cores,orbeamsofanydesiredshapeorsize,exceptthatthevolumeofeachportionshallbenotlessthan350cm’(orfornormalweightconcrete,
6、approximately800g)andeachportionshallbefreefromobservablecracks,fissures,orshatterededges.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,每个部分单独进行测试。各部分可能是任何所需形状或大小的一块柱而,核心,或者束,每个部分的体积不得少于350cn?(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、裂缝或破碎的边缘都应当是自由。ProcedureOven-DryMass—Deter
7、minethemassoftheportions,anddryinanovenatatemperatureof100to110°Cfornotlessthan24h.Afterremovingeachspecimenfromtheoven,allowittocoolindryair(preferablyinadesiccator)toatemperatureof20to25°Canddeterminethemass.Ifthespecimenwascomparativelydrywhenitsm
8、asswasfirstdetermined,andthesecondmasscloselyagreeswiththefirst,consideritdry.Ifthespecimenwaswetwhenitsmasswasfirstdetermined,placeitintheovenforaseconddryingtreatmentof24handagaindeterminethemass.Ifthethirdvaluechecksthesecond,considerthespecimendr
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