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Type: Journal article
Title: Influence of molarity and chemical composition on the development of compressive strength in POFA based geopolymer mortar
Author: Kabir, S.
Alengaram, U.
Jumaat, M.
Sharmin, A.
Islam, A.
Citation: Advances in Materials Science and Engineering, 2015; 2015:647071-1-647071-15
Publisher: Hindawi Publishing Corporation
Issue Date: 2015
ISSN: 1687-8434
Statement of
S. M. Alamgir Kabir, U. Johnson Alengaram, Mohd Zamin Jumaat, Afia Sharmin, and Azizul Islam
Abstract: The investigation concerns the use of the optimum mix proportion of two locally available pozzolanic waste materials, namely, ground granulated blast furnace slag (GGBS) and palm oil fuel ash (POFA), together with metakaolin (MK) as binders. In addition, another local waste material, manufactured sand (M-sand), was used as a replacement for conventional sand in the development of green geopolymer mortar. Twenty-four mortar mixtures were designed with varying binder contents and alkaline activators. The oven dry curing was also kept consistent for all the mix proportions at a temperature of 65∘C for 24 hours. The highest 28-day compressive strength of about 48MPa was obtained for the mortar containing 20% of MK, 35% of GGBS, and 45% of POFA.The increment ofMK beyond 20% leads to reduction of the compressive strength.The GGBS replacement beyond 35% also reduced the compressive strength. The entire specimen achieved average 80% of the 28-day strength at the age of 3 days. The density decreased with the increase of POFA percentage.The finding of this research by using the combination of MK, GGBS, and POFA as binders to wholly replace conventional ordinary Portland cement would lead to alternate eco-friendly geopolymer matrix.
Rights: Copyright © 2015 S. M. Alamgir Kabir et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
RMID: 0030070523
DOI: 10.1155/2015/647071
Appears in Collections:Civil and Environmental Engineering publications

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