Experimental study on blast furnace nickel slag powder and fly ash as a binder for geopolymer concrete

Lisa Oksri Nelfia, Mutia Rahmawati, Sotya Astutiningsih

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper investigates the characteristics of concrete made from blast furnace nickel slag powder (BFNSP) and fly ash (FA) to use an alternative binder to conventional Portland cement (PC) by making a geopolymer concrete using an alkali activator. Samples for testing were made using 100% of BFNSP, and 50% BFNSP + 50% FA combination binder, as a direct replacement for the PC in concrete. These test samples were evaluated by compression and slump tests, also using the Le Chatelier’ method, XRF, and SEM analysis of microstructure properties. The samples with BFNSP were activated with alkaline activators with molarities of 12M and 6M with a ratio of Na2SiO3 to NaOH of 2.5. The test samples with 100% BFNSP and 12M activator showed the most slump and workability. However, the 50% BFNSP + 50% FA mix and 12M activator had the highest compressive strength at 55.97Mpa at 28 days. These results compare very favorably with the control Portland cement sample.

Original languageEnglish
Title of host publicationICCOEE 2020 - Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering, ICCOEE 2020
EditorsBashar S. Mohammed, Shamsul Rahman M. Kutty, Abdul-Lateef Balogun, Nasir Shafiq, Hisham Mohamad
PublisherSpringer Science and Business Media Deutschland GmbH
Pages385-395
Number of pages11
ISBN (Print)9789813363106
DOIs
Publication statusPublished - 2021
Event6th International Conference on Civil, Offshore and Environmental Engineering, ICCOEE 2020 - Kuching, Malaysia
Duration: 13 Jul 202115 Jul 2021

Publication series

NameLecture Notes in Civil Engineering
Volume132
ISSN (Print)2366-2557
ISSN (Electronic)2366-2565

Conference

Conference6th International Conference on Civil, Offshore and Environmental Engineering, ICCOEE 2020
CountryMalaysia
CityKuching
Period13/07/2115/07/21

Keywords

  • Binders
  • Blast furnace nickel slag powder
  • Fly ash
  • Geopolymer concrete
  • SEM

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