Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive

This research studied the improvement of the geopolymerization of bottom ash (BA) by incorporating fly ash (FA) and using flue gas desulfurization gypsum (FGDG) as additive. The BA:FA ratios of 100:0, 75:25, 50:50, 25:75, and 0:100 were used as the blended source materials. The source materials were...

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Main Authors: Boonserm K., Sata V., Pimraksa K., Chindaprasirt P.
Format: Article
Language:English
Published: 2014
Online Access:http://www.scopus.com/inward/record.url?eid=2-s2.0-84861345793&partnerID=40&md5=e13ad7f581c8e3a559d65769eadeb8ef
http://cmuir.cmu.ac.th/handle/6653943832/6702
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Institution: Chiang Mai University
Language: English
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spelling th-cmuir.6653943832-67022014-08-30T03:51:07Z Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive Boonserm K. Sata V. Pimraksa K. Chindaprasirt P. This research studied the improvement of the geopolymerization of bottom ash (BA) by incorporating fly ash (FA) and using flue gas desulfurization gypsum (FGDG) as additive. The BA:FA ratios of 100:0, 75:25, 50:50, 25:75, and 0:100 were used as the blended source materials. The source materials were then replaced with 0%, 5%, 10%, and 15% of FGDG. NaOH, sodium silicate and temperature curing were used to activate the geopolymer. Test results indicated that the increase in FA content in the BA-FA blends improved the strengths of geopolymer mortars owing to the high glassy phase content and high reactivity of FA compared to those of BA. The use of up to 10% of FGDG as additive also significantly increased the strengths of geopolymer. In this case, the compressive strength enhancement was due to the increase in the Al 3+ leached from BA in the presence of SO42- and the formation of additional calcium silicate hydrate. © 2012 Elsevier Ltd. All rights reserved. 2014-08-30T03:51:07Z 2014-08-30T03:51:07Z 2012 Article 9589465 10.1016/j.cemconcomp.2012.04.001 CCOCE http://www.scopus.com/inward/record.url?eid=2-s2.0-84861345793&partnerID=40&md5=e13ad7f581c8e3a559d65769eadeb8ef http://cmuir.cmu.ac.th/handle/6653943832/6702 English
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
language English
description This research studied the improvement of the geopolymerization of bottom ash (BA) by incorporating fly ash (FA) and using flue gas desulfurization gypsum (FGDG) as additive. The BA:FA ratios of 100:0, 75:25, 50:50, 25:75, and 0:100 were used as the blended source materials. The source materials were then replaced with 0%, 5%, 10%, and 15% of FGDG. NaOH, sodium silicate and temperature curing were used to activate the geopolymer. Test results indicated that the increase in FA content in the BA-FA blends improved the strengths of geopolymer mortars owing to the high glassy phase content and high reactivity of FA compared to those of BA. The use of up to 10% of FGDG as additive also significantly increased the strengths of geopolymer. In this case, the compressive strength enhancement was due to the increase in the Al 3+ leached from BA in the presence of SO42- and the formation of additional calcium silicate hydrate. © 2012 Elsevier Ltd. All rights reserved.
format Article
author Boonserm K.
Sata V.
Pimraksa K.
Chindaprasirt P.
spellingShingle Boonserm K.
Sata V.
Pimraksa K.
Chindaprasirt P.
Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
author_facet Boonserm K.
Sata V.
Pimraksa K.
Chindaprasirt P.
author_sort Boonserm K.
title Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
title_short Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
title_full Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
title_fullStr Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
title_full_unstemmed Improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
title_sort improved geopolymerization of bottom ash by incorporating fly ash and using waste gypsum as additive
publishDate 2014
url http://www.scopus.com/inward/record.url?eid=2-s2.0-84861345793&partnerID=40&md5=e13ad7f581c8e3a559d65769eadeb8ef
http://cmuir.cmu.ac.th/handle/6653943832/6702
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