Mitigation of Efflorescence and Alkali Leaching in Activated Slag Using Foundry Sand

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

This research aimed to examine the impact of foundry sand on alkali leaching and the formation of efflorescence in alkali-activated slag. The activation process involved the utilization of sodium hydroxide and sodium silicate solutions in activating ground-granulated blast furnace slag (GBFS) and sand samples. The leaching of alkali and the formation of efflorescence were observed to occur at a reduced rate in samples derived solely from 100% ground granulated blast furnace slag (GBFS). In contrast, higher rates were identified in samples containing chemically bonded foundry sand. The incorporation of chemically bonded foundry sand elevated the mobility of alkali, leading to an increased formation of efflorescence in alkali-activated slag.

Original languageEnglish
Title of host publicationKey Engineering Materials
PublisherTrans Tech Publications Ltd
Pages101-107
Number of pages7
DOIs
Publication statusPublished - 2024

Publication series

NameKey Engineering Materials
Volume980
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • Alkali Activated Slag
  • Alkali Leaching
  • Chemically bonded sand
  • Efflorescence
  • Ground granulated Furnace Slag

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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