The influence of molarity variations to the mechanical behavior of geopolymer concrete

Purwanto*, Ay Lie Han, Nuroji, Januarti Jaya Ekaputri

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Research on geopolymer concrete has seen a new light in the analyses and experiments for special topics in the field of their mechanical properties. Among the most important are studies of geopolymer concrete subjected to confinement and bond. Regarding the basic material behavior, research of material proportions formulations, mix design formulas and inventions towards the development of a high-performance geopolymer concrete, were conducted. The latest looked into the effects of molar activator concentrations to the 28 days compression strength, and the strength development as a function of concrete age for geopolymer concretes. The specimens were 150 by 300-millimeter cylinders tested in uniaxial compression. The molarity variations were set at 6, 8, and 10 molars. The geopolymer concrete samples were compared to conventional concrete specimens, having the exact same volumetric material proportions. The cement was replaced with fly ash, and the activator with water. The aggregate content was taken as a constant. The concrete strength as a function of molar increase followed a parabolic, convex pattern, suggesting that a maximum value exists. The strength development of all geopolymer concretes had a slower rate when compared to conventional concrete.

Original languageEnglish
Article number01010
JournalMATEC Web of Conferences
Volume195
DOIs
Publication statusPublished - 22 Aug 2018
Event4th International Conference on Rehabilitation and Maintenance in Civil Engineering, ICRMCE 2018 - Solo Baru, Indonesia
Duration: 11 Jul 201812 Jul 2018

Keywords

  • Age
  • Compression strength
  • Geopolymer concrete
  • Molarity

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