Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar

This paper describes the experimental investigation carried out to develop the geopolymer concrete based on alkali-activated rice husk ash (RHA) by sodium hydroxide with sodium silicate. Effect on method of curing and concentration of NaOH on compressive strength as well as the optimum mix proportio...

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Main Authors: Yun Yong Kim, Byung-Jae Lee, Velu Saraswathy, Seung-Jun Kwon
Format: Article
Language:English
Published: Wiley 2014-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1155/2014/209584
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author Yun Yong Kim
Byung-Jae Lee
Velu Saraswathy
Seung-Jun Kwon
author_facet Yun Yong Kim
Byung-Jae Lee
Velu Saraswathy
Seung-Jun Kwon
author_sort Yun Yong Kim
collection DOAJ
description This paper describes the experimental investigation carried out to develop the geopolymer concrete based on alkali-activated rice husk ash (RHA) by sodium hydroxide with sodium silicate. Effect on method of curing and concentration of NaOH on compressive strength as well as the optimum mix proportion of geopolymer mortar was investigated. It is possible to achieve compressive strengths of 31 N/mm2 and 45 N/mm2, respectively for the 10 M alkali-activated geopolymer mortar after 7 and 28 days of casting when cured for 24 hours at 60°C. Results indicated that the increase in curing period and concentration of alkali activator increased the compressive strength. Durability studies were carried out in acid and sulfate media such as H2SO4, HCl, Na2SO4, and MgSO4 environments and found that geopolymer concrete showed very less weight loss when compared to steam-cured mortar specimens. In addition, fluorescent optical microscopy and X-ray diffraction (XRD) studies have shown the formation of new peaks and enhanced the polymerization reaction which is responsible for strength development and hence RHA has great potential as a substitute for ordinary Portland cement concrete.
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institution Kabale University
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language English
publishDate 2014-01-01
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series The Scientific World Journal
spelling doaj-art-f3abc8e7bcf0404fae64cbb383706a2f2025-02-03T01:22:15ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/209584209584Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer MortarYun Yong Kim0Byung-Jae Lee1Velu Saraswathy2Seung-Jun Kwon3Department of Civil Engineering, Chungnam National University, Daejeon 305-764, Republic of KoreaDepartment of Civil Engineering, Chungnam National University, Daejeon 305-764, Republic of KoreaCorrosion and Materials Protection Division, CSIR-Central Electrochemical Research Institute, Karaikudi, IndiaDepartment of Civil Engineering, Hannam University, Daejeon 306-791, Republic of KoreaThis paper describes the experimental investigation carried out to develop the geopolymer concrete based on alkali-activated rice husk ash (RHA) by sodium hydroxide with sodium silicate. Effect on method of curing and concentration of NaOH on compressive strength as well as the optimum mix proportion of geopolymer mortar was investigated. It is possible to achieve compressive strengths of 31 N/mm2 and 45 N/mm2, respectively for the 10 M alkali-activated geopolymer mortar after 7 and 28 days of casting when cured for 24 hours at 60°C. Results indicated that the increase in curing period and concentration of alkali activator increased the compressive strength. Durability studies were carried out in acid and sulfate media such as H2SO4, HCl, Na2SO4, and MgSO4 environments and found that geopolymer concrete showed very less weight loss when compared to steam-cured mortar specimens. In addition, fluorescent optical microscopy and X-ray diffraction (XRD) studies have shown the formation of new peaks and enhanced the polymerization reaction which is responsible for strength development and hence RHA has great potential as a substitute for ordinary Portland cement concrete.http://dx.doi.org/10.1155/2014/209584
spellingShingle Yun Yong Kim
Byung-Jae Lee
Velu Saraswathy
Seung-Jun Kwon
Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar
The Scientific World Journal
title Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar
title_full Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar
title_fullStr Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar
title_full_unstemmed Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar
title_short Strength and Durability Performance of Alkali-Activated Rice Husk Ash Geopolymer Mortar
title_sort strength and durability performance of alkali activated rice husk ash geopolymer mortar
url http://dx.doi.org/10.1155/2014/209584
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AT byungjaelee strengthanddurabilityperformanceofalkaliactivatedricehuskashgeopolymermortar
AT velusaraswathy strengthanddurabilityperformanceofalkaliactivatedricehuskashgeopolymermortar
AT seungjunkwon strengthanddurabilityperformanceofalkaliactivatedricehuskashgeopolymermortar