Effect of the Formulation of Sodium Activation Solutions on the Setting Time of Metakaolin Based Geopolymers  

作　　者：Lahlou Nouha Ouazzani Touhami Mohamed Moussa Redouane Hattaf Rabii 

机构地区：[1]Facultedes Sciences Ainnchock,UniversiteHassanII,Laboratoire de Mecanique,Casablanca 20000,Maroc [2]Facultedes Sciences Ainchock,UniversiteHassanII,Laboratoire de Physico-Chimie des Materiaux Inorganiques,Casablanca 20000,Maroc

出　　处：《材料科学与工程（中英文B版）》2019年第1期6-12,共7页Journal of Materials Science and Engineering B

摘　　要：Geopolymer materials today represent innovative products,used frequently as a substitute for cementitious traditional materials.They are obtained by the action of an alkaline activation solution(composed of mainly of silicon dioxide(SiO2)and sodium hydroxide(NaOH)and water)on a powder natural or synthetic aluminosilicates.In this work,we seek to highlight the effect of the percentage of sodium dioxide firstly,on the evolution of the viscosity of the alkali-activated solution and secondly,on the evolution of the viscosity of geopolymeric solution.Another aspect of this work is the determination of the effect of this percentage on the kinetics that characterize the start of the percolation phenomenon(transition from the fresh state to the hardened state).At last result concerns the impact of temperature on this transition.This contribution consolidates the control protocols for the formulation of geopolymers and allows the optimization of the processes of their exploitation.

关 键 词：SODIUM ACTIVATION SOLUTIONS GEOPOLYMER METAKAOLIN setting time rheological behavior polynomial regression 

分 类 号：TB[一般工业技术]