Ground Granulated Blast Furnace Slag Blended with Silica Fume and Activated with Hydrated Lime: a Short Communication

EasyChair Preprint 10350, version 1

Abstract

The goal of this study is to see if industrial grade hydrated lime can be used as an alkali activator in a one-part system. Calcium addition has long been shown to be beneficial to alkali-activated concrete in studies. The results of this study, however, revealed that using hydrated lime as the sole activator did not significantly increase the strength. This was because calcium-based activators did not improve system pH as much as sodium-based counterparts did. Crystal formations of ettringite and thaumasite were also observed in the microstructure. Furthermore, the pozzolanic reactions overtook the polymerization reaction, resulting in medium strength.

Keyphrases: Ground Granulated Blast Furnace Slag, Lime-activated slag mortar, Microstructure, alkali activation

@booklet{EasyChair:10350,
  author    = {Jayashree Sengupta and Nirjhar Dhang},
  title     = {Ground Granulated Blast Furnace Slag Blended with Silica Fume and Activated with Hydrated Lime: a Short Communication},
  howpublished = {EasyChair Preprint 10350},
  year      = {EasyChair, 2023}}