Abstract
Belite or β-dicalcium silicate (β-C2S, Ca2SiO4), one of the main compounds in Portland cement clinker, is conventionally produced by sintering beyond the temperature of 1,200 °C using limestone and quartz. This study is aimed to synthesis belite from lime sludge, a residual solid waste from paper and pulp industry, with nanosilica at relatively low temperature through solid-state reaction. The precursors and synthesized final products are characterized using TG–MS–DTA, FTIR, XRD, SEM, TEM/EDAX and BET analysis. It is observed that the thermal process toward the formation of belite of mechanically activated dissimilar-sized precursors reduced the sintering temperature of the reaction significantly and belite is obtained without the use of any chemical stabilizers and calcination of lime sludge.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
