Analysis of the Fractal Growth Characteristics and Nucleation Mechanism of Phosphogypsum-based Materials

作     者：HOU Jiaojiao NI Xiaoyang LUO Xin 候姣姣;倪晓阳;LUO Xin

作者机构：Faculty of EngineeringChina University of GeosciencesWuhan430074China College of Chinese Language and LiteratureWuhan UniversityWuhan430072China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2022年第37卷第5期

页      面：863-875页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

主　　题：phosphogypsum pozzolanic addition quantification analysis microhydration characteristic nucleation mechanism 

摘      要：Phosphogypsum-based materials (PBM) were synthesized with varied phase compositions of phosphogypsum,portland cement and fly *** of fractal growth characteristics on physicochemical properties,pore structure,compressive strength,as well as the hydration behaviour and mineralogical conversion of mortars were examined by a multitechnological approach,including mercury intrusion porosimetry,rietved phase analysis,thremal analysis,calorimetry and Fourier transforminfrared spectroscopy *** results indicate that the specimens cured with mosite resulted in higher strength and lower porosity compared with those cured in the drying *** addition,a more complicated course of the aluminate and silicate reactions during the hydration process has been published,with the hydration products mainly consisting of calcium silicate hydrate (C-S-H),portlandite,ettringite,hemicarbonate,monocarboaluminate,calcite,quartz,a mixed AFm passed with carbonate,and *** all,the nucleation process is a reaction that can be defined as a solid,liquid and gaseous phases that goes through the four stages of materialization mixing and modification,i e,hydration of low calcium content,secondary hydration,high calcium condensation and geoplymensation,*** rupture,recombination,polymerization reactions of Si-O,Ca-O,Al-O bonds contribute to the nucleation mechanism that serves as the formation of C-S-H in hydration products.