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Paper Titles
Compressive Strength of Geopolymer Based on the Fly Ash Variation
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Flexural Strength of Low Calcium Class F Fly Ash-Based Geopolymer Concrete in Long Term Performance
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Application of Pozzolan as Materials of Geopolymer Paste
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Characterization of Fly Ash on Geopolymer Paste
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Study of Fly Ash (FA) and Palm Oil Fuel Ash (POFA) Geopolymer Mortar Resistance in Acidic Peat Environment
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Development of Nanozeolite-Geopolymer as Adsorbent Material for Motor Vehicle Emissions
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Lightweight Geopolymer Binder with Abaca Fiber in Different Curing
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Study of Fly Ash (FA) and Palm Oil Fuel Ash (POFA) Geopolymer Mortar Resistance in Acidic Peat Environment

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Abstract:

Peat is superficial deposit or soil with high organic content. The soil is highly compressible and acidic. The organic acidic water in swampy peat soil consists humic acid that is potentially corrosive to concrete and metal structures. Geopolymer is a material using waste from agro-industry such as fly ash (FA) and palm oil fuel ash (POFA) that is activated with alkaline solution. In this research, the acid resistance of geopolymer mortars from fly ash and palm oil fuel ash was measured by change in compressive strength and porosity. The samples were subjected to distilled water and acidic peat water. The OPC mortars showed a considerable decrease in compressive strength after subjected in peat water for up to 180 days. There was a fluctuated trend of geopolymer FA and a high decrease in compressive strength of geopolymer POFA after subjected to the peat water. The porosity of the geopolymer specimens was higher than the control mortars. However, it was observed that the geopolymer FA is more resistant to the acidic peat water than the geopolymer POFA due to stable aluminosilicate bonding.

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Periodical:

Materials Science Forum (Volume 841)

Pages:

126-132

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.841.126

Citation:

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Online since:

January 2016

Authors:

Monita Olivia*, Chrisfela Wulandari, Iskandar R. Sitompul, Lita Darmayanti, Zulfikar Djauhari

Keywords:

Acid, Compressive Strength, Fuel Ash, Geopolymer, Palm Oil Fuel Ash, Peat, Porosity

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* - Corresponding Author

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