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界面区结构对水泥砂浆抗硫酸盐侵蚀性能的影响
作者:沈洋 许仲梓 吴承祯 唐明述 
单位:南京化工大学材料科学与工程系 
关键词:水泥砂浆 界面区 硫酸盐侵蚀 深加工处理石英集料 膨胀 
分类号:TU528.45
出版年,卷(期):页码:1996,24(2):0-0
DOI:
摘要:
使用测长法和X射线衍射定量法,从二方面研究了界面区结构对水泥砂浆试样抗硫酸盐侵蚀性能的影响。一是将砂浆试样按不同的集料含量进行成型,研究界面区含量对试样抗硫酸盐侵蚀性能的影响;二是使用具有水硬性表面层和惰性内核复合结构的深加工处理石英集料以改进砂浆试样中界面区结构,研究界面区结构对试样抗硫酸盐侵蚀性能的影响。研究结果表明:水泥浆体与集料之间的界面过渡区是硫酸盐侵蚀的薄弱区域;砂浆试样中界面区含量愈多,试样的抗硫酸盐侵蚀性能愈差。使用深加工处理石英集料可以大幅度地提高水泥砂浆试样的抗硫酸盐侵蚀能力。
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With methods of length measurement and quantitative X-ray diffraction analysis, the influences of structure of interfacial zone on the resistance of mortar to sulfate attack were studied from two aspects. One is the influence of content of interfacial zone. The mortar samples were made according to a series of aggregate content(Φa). The other is the influence of structure of interfacial zone. Pretreated quartz sand composed of hydraulic surface layer and inert core was used to improve the interfacial zone. The study shows that the interfacial zone between aggregate and bulk paste was a weak part to sulfate attack. The more the content of interfacial zone, the weaker the resistance of mortar to sulfate attack. The sulfate resistance of mortar was substantially raised when pretreated quartz sand was used as aggregate.
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参考文献:
1TaylorHFW.CementChemistry.AcademicPressINC,1990:3972CohenMD,MatherB.Sulfateattackonconcrete──researchneeds.ACIMaterialsJ,1991;88(1):623沈威,黄文熙,闵盘荣.水泥工艺学.武汉:武汉工业大学出版社,1991:304沈洋.水泥浆体-集料理想界面结构的研究:[博士学位论文].南京:南京化工学院材料科学与工程系,19935吴学权,博国飞.X射线衍射技术.南京化工学院讲义,1987:1~186王智敏.用X射线衍射-计算机定量相分析(K值法)测定硬化波特兰水泥浆体的晶态物质含量.第五届水泥化学与测试方法会议论文集,南京,1992:3017GrandetK,FarranJ,MasoJC.Orientationaldeshydraeaucontractdesgronulates.Proc7thInterCongChemCem,VolⅢ,Paris,1980:Ⅶ-858DiamondS,MindessS,LovellJ.Onthespacingbetweenaggregategrainsinconcreteandthedimensionsofauveoledetransition.ProcLiaisonsPastesdeCimentMateriauxAssocies,Toulouse,France,1982:C439DamitotD,GlasserFP.ThermodynamicinvestigationoftheCaO-Al2O3-CaSO4·2H2Osystemat25℃andinfluenceofNa2O.CementandConcreteResearch,1993;23(1):221
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