A study on flowability, strength and drying shrinkage properties of one-part AAM cured at ambient temperature

Mohammad Idris Rasuli*, Yuyun Tajunnisa, Akifumi Yamamura

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Alkali-activated materials are conventionally produced by a two-part mixing in which alkalis are used as aqueous solutions that create applicability problems. To overcome the problem, one-part alkali-activated materials (AAM) are being studied. In this study, the influence of aluminosilicate precursors, sodium hydroxide (NaOH), alkaline activators (AA) ratio (Na2SiO3: NaOH), and production method on flowability, compressive and flexural strength, and drying shrinkage properties of one-part AAM was studied. Ground granulated blast-furnace slag (GGBFS) increased the strength but negatively influenced the flowability and drying shrinkage of the AAM. Fly ash improved the flowability and decreased the drying shrinkage but the material had much lower reactivity at ambient temperature to improve the strength. AA ratio improved the flowability but reduced the strength. High-concentrated NaOH decreased the flowability and strength of the material. One-part AAM had much lower strength compared to conventional and two-part AAM. This is attributed to a lack of better reaction between aluminosilicate precursors and AA in the one-part mixture.

Original languageEnglish
Article number30
JournalJournal of Building Pathology and Rehabilitation
Volume9
Issue number1
DOIs
Publication statusPublished - Jun 2024

Keywords

  • Drying shrinkage
  • Flowability
  • One-part mixing
  • Strength

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