Early age shrinkage cracking of restrained metakaolin-slag-palm oil fuel ash binder geopolymer mortars

Ali Mohamed Ali Aboshia, Riza Atiq Abdullah O.K. Rahmat, Muhammad Fauzi Mohd. Zain, Amiruddin Ismail

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The purpose of this study is to investigate the effects of a ternary geopolymer binder (MKSP) on the early-age shrinkage cracking, creep relaxation, and stress development of a restrained mortar containing alkali activated metakaolin (MK), slag(S), and palm oil fuel ash (POFA). Various mortars were prepared containing different proportions of these binder materials. The ASTM restrained shrinkage test was then conducted to determine the age at cracking, and strengths, free shrinkage and creep were also determined. The results indicate that MKSP with 40% MK, 40% slag, and 20% POFA exhibits the lowest shrinkage strain, possesses sufficient compressive strength (52 MPa) with a creep relaxation (4.2 MPa), and delays the age of mortar cracking for 18 days. Therefore, the use of a ternary MKSP is demonstrated to reduce the early age cracking in mortars. This finding has significant benefits for structures that require a high resistance to cracking, such as pavements

Original languageEnglish
Pages (from-to)1-25
Number of pages25
JournalJournal of Sustainable Cement-Based Materials
DOIs
Publication statusAccepted/In press - 22 Jun 2018

Fingerprint

Ashes
Geopolymers
Palm oil
mortar
Fuel oils
slag
Mortar
Slags
Binders
ash
Creep
creep
Alkalies
Pavements
Compressive strength
pavement
compressive strength
palm oil
fuel oil
cracking (fracture)

Keywords

  • creep relaxation
  • early age of cracking
  • Geopolymer binders
  • restrained shrinkage
  • stress development

ASJC Scopus subject areas

  • Ceramics and Composites
  • Waste Management and Disposal

Cite this

Early age shrinkage cracking of restrained metakaolin-slag-palm oil fuel ash binder geopolymer mortars. / Aboshia, Ali Mohamed Ali; O.K. Rahmat, Riza Atiq Abdullah; Mohd. Zain, Muhammad Fauzi; Ismail, Amiruddin.

In: Journal of Sustainable Cement-Based Materials, 22.06.2018, p. 1-25.

Research output: Contribution to journalArticle

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