Characterization of Slag-Based Mix Activated with Hydrated Lime of Industrial Grade: a Short Communication

EasyChair Preprint 10350, version 3

Abstract

The objective of this study is to examine whether industrial-grade hydrated lime can serve as an effective alkali activator in a one-part system. While previous experiments have showcased the positive impact of introducing calcium in alkali-activated concrete, the current investigation reveals that relying solely on hydrated lime did not yield a significant improvement in strength. Additionally, surpassing a hydrated lime content of 30% had adverse effects, leading to a notable decline in strength. Microstructural analysis demonstrated a prevalence of CSH gel over CASH polymeric gel, indicating that pozzolanic reactions took precedence over the polymerization process, resulting in the production of concrete with low-to-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     = {Characterization of Slag-Based Mix Activated with Hydrated Lime of Industrial Grade: a Short Communication},
  howpublished = {EasyChair Preprint 10350},
  year      = {EasyChair, 2023}}