摘要
以硫铝酸盐水泥熟料及其水化产物为研究对象,在确定Rietveld定量方法系统误差的前提下,进行了定量相分析,同时将定量结果与X射线荧光光谱分析(XRF)、水化热和热重(TG-DTG)试验结果进行了比对.结果表明:Rietveld定量相分析在晶相成分的分析中系统误差约为1%,无定型物的计算误差范围随着内标物掺量的增多而下降;在硫铝酸盐水泥熟料的Rietveld定量相分析中,组合使用正交晶系与立方晶系C4A3$结构文件可得到最优定量结果,且基于此结果反推计算的主要元素组成与XRF结果最为相近;在水化产物的定量相分析方面,基于Rietveld定量相分析结果计算得到的主要矿物反应程度和AFt含量分别与累计水化热数据及热重试验数据有很好的相关性.
Specific to calcium sulfoaluminate clinker and its hydration products, on the premise of confirming systemic error, Rietveld quantitative phases analysis was conducted with its quantitative results to compare to XRF, calorimetry and TG-DTG results. The results show that systemic error of Rietveld quantitative phases analysis is around 1% for testing confirmed crystalline phases, error for calculating amorphous content decreases with amounts of inner standard increasing. In aspect of Rietveld quantitative phases analysis of calcium sulfoaluminate clinker, the optimal quantitative result can be obtained by employing both orthorhombic and cubic crystal file of C4A3$, and the back stepping calculation of main elements is the most approximated to XRF results. In aspect of Rietveld quantitative phases analysis of hydration products, the reaction degree and AFt content, which are obtained by Rietveld method, are respectively well corresponded to calorimetry and TG-DTG results.
作者
常钧
崔凯
CHANG Jun;CUI Kai(School of Civil Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2020年第2期438-446,共9页
Journal of Building Materials
基金
国家自然科学基金中英合作项目(51761135011)。
