Identification of Critical Parameters for Effective Substitution Using SCMs in Low Clinker Factor Ce

• 作 者: SreejithKrishnan;AneetaMaryJoseph;ShashankBishnoi;
• 机 构: Department of Civil Engineering, Indian Institute of Technology, New Delhi, 110016
• 出 处: The 14th International Congress on the Chemistry of Cement (
• 发表日期: 2015年期

　　Novel ternary and quaternary cement blends created using various combinations of Supplementary Cementitious Materials (SCMs) and other additives that can significantly reduce clinker factor are being widely investigated.The presence of multiple SCMs results in complex hydration reactions, leading to improved performance of concrete in many cases.While low clinker factors helps to improve cements from a sustainability point of view, the development of mechanical properties will depend upon the degree of hydration and cementing efficiency of hydration reactions.The low clinker content reduces the Portlandite available to react with SCMs, whereas the reactivity of SCMs itself depends upon its physical and chemical properties.The quality and composition of the SCMs and clinker therefore plays a major role in determining the optimum compositions of ternary cements.This study develops methods that can be used to proportion ternary and other composite cements, using the specific case of a new ternary blend called Limestone Calcined Clay Cement (LC3) as an example.Methods and experimentally measurable parameters that play a critical role in the design of similar low clinker factor blends have been identified in this study.