Effect of Sodium Aluminate on the Fresh and Hardened Properties of Fly Ash-Based One-Part Geopolymer

Authors

  • Ooi Wan-En Universiti Malaysia Perlis (UNIMAP), Center of Excellence Geopolymer and Green Technology (CEGEOGTECH), Kangar, 01000 Perlis, Malaysia https://orcid.org/0000-0002-6541-4672
  • Yun-Ming Liew Universiti Malaysia Perlis (UNIMAP), Center of Excellence Geopolymer and Green Technology (CEGEOGTECH), Kangar, 01000 Perlis, Malaysia https://orcid.org/0000-0001-6600-4969
  • Heah Cheng Yong Universiti Malaysia Perlis (UNIMAP), Faculty of Mechanical Engineering Technology, Kangar, 01000 Perlis, Malaysia https://orcid.org/0000-0001-7093-7833
  • Ho Li-Ngee Universiti Malaysia Perlis (UNIMAP), Faculty of Chemical Engineering Technology, Kangar, 01000 Perlis, Malaysia
  • Mohd Mustafa Al Bakri Abdullah Universiti Malaysia Perlis (UNIMAP), Center of Excellence Geopolymer and Green Technology (CEGEOGTECH), Kangar, 01000 Perlis, Malaysia https://orcid.org/0000-0002-9779-8586
  • Ong Shee-Ween Universiti Malaysia Perlis (UNIMAP), Center of Excellence Geopolymer and Green Technology (CEGEOGTECH), Kangar, 01000 Perlis, Malaysia https://orcid.org/0000-0003-0256-6916
  • Andrei Victor Sandu Gheorghe Asachi Technical University of Iasi, Faculty of Materials Science and Engineering, 700050, Iasi, Romania https://orcid.org/0000-0002-9292-749X

DOI:

https://doi.org/10.24425/amm.2022.137775

Abstract

The one-part geopolymer binder was synthesis from the mixing of aluminosilicate material with solid alkali activators. The properties of one-part geopolymers vary according to the type and amount of solid alkali activators used. This paper presents the effect of various sodium metasilicate-to-sodium aluminate (NaAlO2/Na2SiO3) ratios on fly ash-based one-part geopolymer. The NaAlO2/Na2SiO3 ratios were set at 1.0 to 3.0. Setting time of fresh one-part geopolymer was examined through Vicat needle apparatus. Mechanical and microstructural properties of developed specimens were analysed after 28 days of curing in ambient condition. The study concluded that an increase in NaAlO2 content delayed the setting time of one-part geopolymer paste. The highest compressive strength was achieved at the NaAlO2/Na2SiO3 ratio of 2.5, which was 33.65 MPa. The microstructural analysis revealed a homogeneous structure at the optimum ratio. While the sodium aluminium silicate hydrate (N-A-S-H) and anorthite phases were detected from the XRD analysis.

Published

2022-06-10

How to Cite

Wan-En, Ooi, et al. “Effect of Sodium Aluminate on the Fresh and Hardened Properties of Fly Ash-Based One-Part Geopolymer”. Archives of Metallurgy and Materials, vol. 67, no. 2, June 2022, doi:10.24425/amm.2022.137775.

Issue

Vol. 67 No. 2 (2022)

Section

Articles