硅酸盐学报2017，Vol.45Issue(8)：1073-1079,7.DOI:10.14062/j.issn.0454-5648.2017.08.04
磷掺杂对阿利特介稳结构及水化性能的影响
Influence of Phosphorus Doping on Metastable Structure and Properties of Alite
摘要
Abstract
The influence of phosphorus doping on the crystal structure,phase transformation,microstructure and hydration properties of alite was investigated by X-ray powder diffraction with the Rietveld method,differential scanning calorimetry and Fourier transform infrared spectroscopy,scanning electron microscopy and isothermal calorimetry,respectively.The results show that the P2O5 addition of 1％ (in mass fraction,the same below) can stabilize R-type alite.However,it is unstable at 650-850 ℃,which transforms into lower temperature forms.P2O5 at a lower content (Le.,≤0.2％) does not affect the hydration characteristics and strength properties of alite.When the content of P2O5 is close to the morphotropic phase boundary,alite shows the highest early hydration reactivity.The length-diameter ratio of alite and the early hydration reactivity decrease,the main hydration slows down,but the rate of hydration increases during the deceleration period when the amount of P2O5 increases.The stabilization of R-type alite can greatly improve the compressive strength of alite.关键词
磷/阿利特/固溶体/多晶态/抗压强度/准同型相界Key words
phosphorusalite/alite/solid solution/compressive strength/morphotropic phase boundary分类
化学化工引用本文复制引用
任雪红,张文生,叶家元,沈晓冬,马素花..磷掺杂对阿利特介稳结构及水化性能的影响[J].硅酸盐学报,2017,45(8):1073-1079,7.基金项目
国家自然科学基金资助项目(51302256). （51302256）
