Effect of combined activator of Ca(OH)2 and Na2CO3 on workability and compressive strength of alkali-activated ferronickel slag system

The utilization of ferronickel slag into the alkali-activated system is promising to mitigate environmental pollution. Due to slower reaction rate and satisfactory strength, a combined activator of Ca(OH)2 and Na2CO3 (molar ratio of 1: 1) was used to investigate the effect of combined activator content (i.e. 3, 5, 7 and 9% Na2O equivalent) on the workability, water requirement of normal consistency, setting time, soundness and compressive...