Performance Evaluation and Microstructure Characterization of Metakaolin‐Based Geopolymer Containing Oil Palm Ash

Hawa, Abideng; Tonnayopas, Danupon; Prachasaree, Woraphot

doi:10.1155/2013/857586

Cited by 28 publications

(14 citation statements)

References 19 publications

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“…Kupaei et al identified an increase in the compressive strength of foamed cements as coal fly ash was partially replaced by palm oil fuel ash, which was attributed to the higher water demand of the coal ash and thus the need to add more water to achieve satisfactory workability, and Liu et al also developed low‐density structural insulating materials from this combination of precursors. Hawa et al added palm oil fuel ash to alkali‐activated metakaolin, which was able to decrease the tendency towards drying shrinkage of these alkali‐activated cements.…”

Section: Agro‐industrial Wastesmentioning

confidence: 99%

“…Fernandez‐Jiménez and Palomo suggested that a suitable coal FA must have loss on ignition values lower than 5% . However, there exist studies related to the production of alkali‐activated materials using different industrial wastes or by‐products derived from thermal processes with higher contents of organic matter, including coal fly ash, coal bottom ash, municipal solid waste ashes, palm oil fuel ash, and sugar cane bagasse ash . Considering that the high content of un‐reacted material reduces the effectiveness and reactivity of these wastes as precursors, blending with another more‐reactive aluminosilicate may be required.…”

Section: Summary and General Considerationsmentioning

confidence: 99%

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Management and valorisation of wastes through use in producing alkali‐activated cement materials

Bernal

Rodríguez

Kirchheim

et al. 2016

J of Chemical Tech & Biotech

144

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ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Abstract 15There is a growing global interest in maximising the re-use and recycling of waste, to 16 minimise the environmental impacts associated with waste treatment and disposal. Use 17 of high-volume wastes in the production of blended or novel cements (including alkali-18 activated cements) is well known as a key pathway by which these wastes can be re-19 used. This paper presents a critical overview of the urban, agricultural, mining and 20 industrial wastes that have been identified as potential precursors for the production of 21 alkali-activated cement materials, or that can be effectively stabilised/solidified via 22 alkali activation, to assure their safe disposal. The central aim of this review is to 23 elucidate the potential advantages and pitfalls associated with the application of alkali-24 activation technology to a wide variety of wastes that have been claimed to be suitable 25 for the production of construction materials. A brief overview of the generation and 26 characteristics of each waste is reported, accompanied by identification of opportunities 27 for the use of alkali-activation technology for their valorisation and/or management. 28

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Section: Agro‐industrial Wastesmentioning

confidence: 99%

Section: Summary and General Considerationsmentioning

confidence: 99%

Management and valorisation of wastes through use in producing alkali‐activated cement materials

Bernal

Rodríguez

Kirchheim

et al. 2016

J of Chemical Tech & Biotech

144

View full text Add to dashboard Cite

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“…During the last two decades, there have been a number of researchers who focused their efforts to utilize geopolymer concrete due to the wide range of potential applications [8,9,15]. The effect of single and binary combination of binders among MK, GGBS, and POFA has been reported by previous researchers [28][29][30]. Islam et al [13] reported the highest compressive strength of about 66 MPa by using 70% GGBS with 30% POFA.…”

Section: Introductionmentioning

confidence: 99%

Influence of Molarity and Chemical Composition on the Development of Compressive Strength in POFA Based Geopolymer Mortar

Kabir

Alengaram

Jumaat

et al. 2015

Advances in Materials Science and Engineering

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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 48 MPa was obtained for the mortar containing 20% of MK, 35% of GGBS, and 45% of POFA. The increment of MK 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.

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“…Lim et al [22] reported that foamed concrete incorporating POFA enhanced compressive, flexure, splitting tensile strength, and ductility. Hawa et al [29] evaluated the performance and microstructure characterization of metakaolin based geopolymer concrete containing POFA.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Variation of Molarity of Alkali Activator and Fine Aggregate Content on the Compressive Strength of the Fly Ash: Palm Oil Fuel Ash Based Geopolymer Mortar

Bashar

Alengaram

Jumaat

et al. 2014

Advances in Materials Science and Engineering

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The effect of molarity of alkali activator, manufactured sand (M-sand), and quarry dust (QD) on the compressive strength of palm oil fuel ash (POFA) and fly ash (FA) based geopolymer mortar was investigated and reported. The variable investigated includes the quantities of replacement levels of M-sand, QD, and conventional mining sand (N-sand) in two concentrated alkaline solutions; the contents of alkaline solution, water, POFA/FA ratio, and curing condition remained constant. The results show that an average of 76% of the 28-day compressive strength was found at the age of 3 days. The rate of strength development from 3 to 7 days was found between 12 and 16% and it was found much less beyond this period. The addition of 100% M-sand and QD shows insignificant strength reduction compared to mixtures with 100% N-sand. The particle angularity and texture of fine aggregates played a significant role in the strength development due to the filling and packing ability. The rough texture and surface of QD enables stronger bond between the paste and the fine aggregate. The concentration of alkaline solution increased the reaction rate and thus enhanced the development of early age strength. The use of M-sand and QD in the development of geopolymer concrete is recommended as the strength variation between these waste materials and conventional sand is not high.

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Performance Evaluation and Microstructure Characterization of Metakaolin‐Based Geopolymer Containing Oil Palm Ash

Cited by 28 publications

References 19 publications

Management and valorisation of wastes through use in producing alkali‐activated cement materials

Management and valorisation of wastes through use in producing alkali‐activated cement materials

Influence of Molarity and Chemical Composition on the Development of Compressive Strength in POFA Based Geopolymer Mortar

The Effect of Variation of Molarity of Alkali Activator and Fine Aggregate Content on the Compressive Strength of the Fly Ash: Palm Oil Fuel Ash Based Geopolymer Mortar

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