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重庆大学本科学生毕业设计（论文）水玻璃对地聚合物凝结时间和产物的影响学生：王俊学号：20083883指导教师：彭小芹教授专业：材料科学与工程（建筑材料工程方向）重庆大学材料科学与工程学院二O一二年六月GraduationThesisofChongqingUniversityEffectsofWater-glasstoGeopolymeronTheSettingTimeandProductsUndergraduate:WangJunSupervisor:Prof.PengXiaoqinMajor:MaterialsScienceandEngineering（BuildingMaterialsEngineering）CollegeofMaterialScienceandEngineeringChongqingUniversityJune2012重庆大学本科学生毕业设计（论文）摘要I摘要地聚合物是建筑材料中一种新型碱激发无机聚合胶凝材料，其反应产物是一种三维网络状的无机聚合物。地聚合物原材料的制备过程中CO2和工业三废的排量以及能耗方面都比普通硅酸盐水泥更具有环境协调性。故地聚合物是一种“绿色环保材料”，当前可持续发展形势下此种绿色环保材料有极大的发展空间。本课题是基于对地聚合物研究过程中遇到速凝和凝结时间不稳定的问题制约了地聚合物的进一步研究。解决碱激发偏高岭土地聚合物凝结时间问题，对地聚合物的研究进展有极大的促进作用。本次试验主要研究水玻璃的模数（M）、掺量以及改性水玻璃等对偏高岭土基地聚合物净浆的凝结硬化规律和反应产物力学性能；利用FTIR微观分析方法对碱激发偏高岭土的反应机理和反应过程进行了初步探索。实验结果表明：1、水玻璃模数与地聚合物凝结时间呈负相关；随着水玻璃模数的增加抗压强度增长后减低。2、对于相同模数的水玻璃其掺量与凝结时间和抗压呈正相关；地聚合物早期强度发展很快，但后期强度有倒缩现象。3、NaCl对拌合物的流动度、粘度以及凝结时间都具有显著影响，但对强度影响较小；Na2CO3与水玻璃复合对地聚合物凝结时间影响显著；NaOH对偏高岭土几乎没有激发效果，必须与水玻璃复合使用。4、通过FTIR分析可知，偏高岭土在水玻璃中发生溶解，有Si-O-Si键的断裂，凝结硬化过程中有Si-O-Al键形成，推断发生了缩聚反应，但产物中Q4结构比原材料中Q4结构更少，说明产物中存在或生成的三维网状结构较少。关键词：地聚合物，凝结时间，水玻璃，胶凝材料重庆大学本科学生毕业设计（论文）ABSTRACTIIABSTRACTGeopolymerisanewtypeofinorganichigh-performancepolymericcementitiousmaterialinbuildingmaterials。Thereactionproductofgeopolymerisinorganicpolycondensationthree-dimensionaloxidenetworkstructure.Rawmaterialsusedtogeopolymerneedlessenergyinthemanufacturingprocess,andhavemuchlowerindustrialwasteemission,ComparedtoordinaryPortlandcementconcrete.Andtherawmaterialhavingbeenusedcanberecycledagain.Geopolymerisasustainable“greenmaterials”.Itislimitedforstudyingthatthesettingtimeisshortandinstability.Itwillpromotegeopolymer`sstudyiftheproblemofthesettingtimeofgeopolymercanberesoved.ThisexperimentationisObservedthelawsofthesettingtimeandmechanicalpropertiesbychangingthemodulus,additionandmodificationofthewaterglass.AnalysisingtheProduct,reactionmechanismandgeopolymerizationbyIR.Followingthelawsbythetestofmetakaolinwithwaterglass.1、Thesettingtimeofgeopolymerincreasedwiththemodululsgrowthofwaterglass.Thecompressivestrengthofthegeopolymerincreasedfirstlyandthendecreasedwiththemodulusofwaterglassincreased.2、Thesettingtimeofgeopolymerdecreasedwiththeadditiongrowthofwaterglass.Thecompressivestrengthofthegeopolymerincreasedfirstlyandthendecreasedwiththemodulusofwaterglassincreased.3、EffectofNaClonthefluidityandviscosityandthesettingtimeofthemixtureissignificant,buttheimpactonthestrengthisnotsignificant;.ItissignificantforthesettingtimeofgeopolymerwithNa2CO3compoundactivatingagent,anditdoesn`teffectformetaaolinwithNaOH.4、Si-O-Sicanbebrokenwhenmetakaolindissolvedinwaterglass.Si-O-AlbondcanbeformedinInthehardeningprocess.Itindicatesthepresenceorgeneratedthree-dimensionalstructureinproductislessduetoQ4structureintheproductstructurelessthantherawmaterials.Keyword:geopolymer,thesettingtime,waterglass,cementitiousmaterials重庆大学本科学生毕业设计（论文）目录III目录摘要............................................................................................................................................IABSTRACT.................................................................................................................................II1绪论..............................................................................................................................................11.1地聚合物简介......................................................................................................................11.2地聚合物聚合机理及性能特点..........................................................................................21.2.1地聚合物聚合机理..................................................................................................21.2.2地聚合物的结构特征和性能特点..........................................................................21.3国内外对地聚合物研究现状..............................................................................................31.4地聚合物应用......................................................................................................................41.4.1土木工程...................................................................................................................41.4.2非铁铸造及冶金.......................................................................................................51.4.3建筑装饰...................................................................................................................51.4.4汽车及航空工业.......................................................................................................51.4.5环保领域...................................................................................................................51.5现存问题及本文研究的内容..............................................................................................52原材料及试验方法..............................................................................................................72.1原材料..................................................................................................................................72.1.1偏高岭土（MK）.....................................................................................