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ID:52404318
大小:2.37 MB
页数:5页
时间:2020-03-27
《利用建筑陶瓷废渣制备硅酸盐蒸压砖的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、全国中文核心期刊斩癯建廉柑撕中国科技核心期刊丁琪1,杨赞中1,刘敏1,赵田田2,吴奇阳1,周薛霞1‘(1.山东理工大学材料科学与工程学院,山东淄博255049:2.山东和悦生态新材料科技有限责任公司,山东淄博255190)摘要:以建筑陶瓷废渣为主要原料制备硅酸盐蒸压砖,探讨了骨料和石灰掺量、成型压力和成型用水量对制品性能的影响,通过正交试验确定了原料最佳配合比,利用XRD、SEM和EDS研究了制品强度的形成机理。结果表明,物料配比、成型用水量及成型压力皆对制品性能有一定的影响,按m(陶瓷废渣粉):m(石灰):m(骨料):m(
2、引晶剂):m(水玻璃)=50:15:33:2:0.5配料,加18%水搅拌均匀,25MPa下压制成型,饱和蒸汽1.2MPa下恒温6h制备而成的蒸压砖,其抗压强度达44.5MPa;原料中的SiO:与CaO水热反应生成托贝莫来石、CSH(B)和C—S—H凝胶等水化物,包覆在固体颗粒表面或填充在颗粒之间,相互交织连接形成了坚实的胶结体,由此构成了材料的整体强度。关键词:建筑陶瓷废渣:蒸压砖:正交试验;骨料;成型压力;成型用水量中图分类号:TU522.1文献标识码:A文章编号:1001—702X(2017)04—0039—05Rese
3、archonpreparationofsilicateautoclavedbrickwitharchitecturalceramicwasteresidueDINGQil,YANGza犯危。耐,LIUMinljZHA0Tiantian2,形UQiyang',ZHOUXuexial(1.SchoolofMaterialsScienceandEngineering,ShandongUniversityofTechnology,Zibo255049,China:2.ShandongHeyueEcologicalNewMateria
4、lTechnologyCo.Ltd.,Zibo255190,China)Abstract:Silicateautoclavedbrickwaspreparedbyusingarchitecturalceramicwasteresidueasrawmaterials.Theeffectsofaggregateandlimecontent,formingpressureandformingwatercontentonthepropertiesoftheproductswerediscussed.Themix—ingratioof
5、rawmaterialswasdeterminedbyorthogonalexperiment.AndthestrengthoftheproductsformingmechanismWasstud—iedbyXRD,SEMandEDS.Itwasshownthatmaterialratio,formingwatercontentandformingpressurehadacertainimpactontheperformanceofproducts.Thesampleswerepreparedbycompoundingmat
6、erialsinaccordancewiththemassratioofceramicwasteresidue:lime:aggregate:seedcrystal:waterglass=50:15:33:2:0.5,addingwater18%andunder25MPapressureforming,andbyautoclavingunderhydrothermalconditionswithsteampressure1.2MPafor6h.ThecompressivestrengthofautoclavedbrickWa
7、s44.5MPa.ThehydrothermalreactionbetweenSi02andCaOintherawmaterialsproduceshydratessuchastobermofite,CSH(B)andC—S—Hgel,coatedonthesurfaceofthesolidparticlesand]orfilledinbetweentheparticles,interweavingtoformasolidce—mentedbody,thusformingtheoverallstrengthofthemate
8、rial.Keywords:ceramicwasteresidue,autoclavedbrick,orthogonalexperiment,aggregate,formingpressure,formingwatercontent0引言硅酸盐蒸压砖是以硅质和钙质原料为主,加水和骨料等,经
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