BeijingUniversityofCivilEngineeringandArchitecture毕业设计(论文)姓名:学号:学院:土木与交通工程学院专业(方向):无机非金属材料班级:指导教师:二〇一年六月北京建筑大学本科生毕业设计(论文)偏高岭土的活性及其在混凝土中的应用姓名:学号:学院:土木与交通工程学院专业(方向):无机非金属材料班级:指导教师:201年6月创见性声明本人声明:所呈交的毕业设计(论文)是本人在指导教师的指导下进行的工作和取得的成果,符合学校及学院的毕业设计(论文)管理规定,论文中所引用的他人已经发表或撰写过的研究成果,均加以特别标注并在此表示致谢。与我一同工作的同志对本论文所做的任何贡献也已在论文中作了明确的说明并表示谢意。毕业论文作者签名:签字日期:年月日本科毕业设计(论文)版权使用授权书本毕业设计(论文)作者完全了解北京建筑大学有关保留、使用毕业设计(论文)的规定。特授权北京建筑大学可以将毕业设计(论文)的全部或部分内容编入有关数据库进行检索,并采用影印、缩印或扫描等复制手段保存、汇编以供查阅和借阅。同意学校向国家有关部门或机构送交毕业设计(论文)的复印件和磁盘。(保密的毕业论文在解密后适用本授权说明)毕业论文作者签名:指导教师签名:签字日期:年月日签字日期:年月日北京建筑大学毕业设计(论文)成果清单班级:学生姓名:指导教师:序号项目1234567891011121314成绩备注年月日-I-摘要高岭土在我国储量充足,具有广阔的应用前景。本文主要研究不同产地高岭土在不同煅烧温度下制得偏高岭土的活性,以及不同掺量偏高岭土和硅灰对水泥和混凝土性能的影响。研究结果表明合适煅烧温度可以使偏高岭土具有很高的火山灰活性,高岭土合适的煅烧温度范围为700℃~850℃。在控制流动度为200mm±20mm范围的前提下,将偏高岭土以10%的掺量掺入水泥中可以显著提高水泥胶砂的强度。在控制坍落度为200mm±20mm的前提下,将掺8%、10%和15%的偏高岭土或8%和10%的硅灰与粉煤灰复掺配制混凝土,对比研究偏高岭土和硅灰对混凝土强度的影响,结果表明偏高岭土制备混凝土的强度高于硅灰配制混凝土的强度,研究所选偏高岭土的适宜掺量为10%左右。关键词:偏高岭土;混凝土;水泥胶砂:火山灰活性-II-AbstractTheresourceofkaolinisrichinChina,ithasagreatfuture.Thispapermainlystudiesthedifferentoriginofkaolinatdifferentcalcinationtemperatureofmetakaolinactivity,effectsofdifferentdosageofmetakaolinandsilicafumeonthepropertiesofcementandconcrete.Theresultsshowthattheappropriatecalcinationtemperaturecanmakethemetakaolinhashighvolcanoashactivity,Kaolinsuitablecalcinationtemperaturerangeof700℃~850℃.ControlfluidityOnthepremiseof200mm±20mm,themetakaolininvolume10%incorporationofthecementcanimprovethestrengthofcementmortar.Inthepreconditionofcontrollingslumpis200mm±20mm.metakaolinis8%、10%and15%orthesilicafumeis8%,10%andmixedflyashinconcrete,acomparativestudyoftheeffectsofmetakaolinandsilicafumeonconcretestrength.Theresultsshowthatmetakaolinpreparationofconcretestrengthishigherthanthatofsilicafumeconcretestrength.Thesuitabledosageofthemetakaolinisabout10%.Keywords:metakaolin,concrete,cementmortar,pozzolanicactivity-III-目录摘要....................................................................................................................................IAbstract..................................................................................................................................II第一章绪论.......................................................................................................................11.1课题背景..................................................................................................................11.2偏高岭土..................................................................................................................11.2.1偏高岭土的结构............................................................................................11.2.2偏高岭土的作用机理....................................................................................21.2.3偏高岭土对水泥混凝土的影响....................................................................21.3偏高岭土的未来展望..............................................................................................61.4本课题研究内容......................................................................................................6第二章原材料与试验方法.................................................................................................72.1实验材料..................................................................................................................72.1.1水泥................................................................................................................72.1.2粉煤灰............................................................................................................72.1.3粗骨料............................................................................................................72.1.4细骨料............................................................................................................72.1.5减水剂............................................................................................................72.2试验方法..................................................................................................................72.2.1水泥砂浆强度实验........................................................................................72.2.2混凝土力学性能实验....................................................................................72.2.3X射线荧光仪法............................................................................................7第三章偏高岭土活性的研究.............................................................................................83.1偏高岭土对水泥胶砂强度的影响..........................................................................83.1.1不同煅烧温度高岭土对水泥胶砂强度的影响............................................83.1.2不同偏高岭土对水泥胶砂的影响..............................................................113.2X射线荧光分析....................................................................................................133.3偏高岭土对水泥强度影响的机理分析................................................................143.4本章小结................................................................................................................14第四章偏高岭土对混凝土性能的影响......................