Synthesis of Xonotlite and Effects of Ceramic Fiber Addition on Its Compressive Strength

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摘要 Inordertoimprovethecompressivestrengthofxonotlite,thepretreatedquartzpowder,slakedCaO,additive,deionizedwater(water-solidratioof30)wereplacedinamagneticallystirredautoclave,andthecorrespondingproductswereobtainedafterincubatingat220℃for0,1,3and6h,respectivelytoexplorethesyntheticprocessofxonotlite.Inthepreparedxonotlitepowder,0,5%,10%,15%and20%(bymass,thesamehereinafter)ofpre-treatedceramicstaplefiberswereadded,andtwosetsofspecimenwiththespecificationsofφ50mm×35mmweremoldedbypressedfiltration.Onesetofspecimenswerenotsintered,andtheothergroupwasfiredat1000℃for2htoexploretheeffectofceramicfiberadditiononthecompressivestrengthbeforeandaftersinteringofxonotlite.TheresultsshowthatC-S-Hgelisfirstsynthesizedinthesynthesisofxonotlite,andthentheC-S-Hgelistransformedtoformtobermlite,atlasttobermlitefullyreactstoproducexonotlite.Theadditionofceramicfiberenhancesthecompressivestrengthofthexonotlitebeforeandaftersintering.Whenthe15%ceramicfiberisadded,thecompressivestrengthisthehighest.Thespecimensbeforeandafterthehightemperaturefiringcontainxonotlitephaseandcalciumsilicatephase,respectively,andthecompressivestrengthofthefiredspecimensishigherthanthatofthegreenones.
机构地区 不详
出版日期 2019年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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