Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid

Current trend in construction industry has highlighted the use of silica-rich supplementary cementitious materials from industrial wastes in the production of concrete. Numerous studies have validated the pozzolanic properties of these materials, yet coal bottom ash received only infamous reputation...

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Main Authors:	Kusbiantoro, Andri, Amalina Hanani, Ismail, Rahimah, Embong
Format:	Conference or Workshop Item
Language:	English
Published:	Trans Tech Publications 2019
Subjects:	TP Chemical technology
Online Access:	http://umpir.ump.edu.my/id/eprint/24885/ http://umpir.ump.edu.my/id/eprint/24885/ http://umpir.ump.edu.my/id/eprint/24885/ http://umpir.ump.edu.my/id/eprint/24885/1/Pozzolanic%20Reactivity%20of%20Coal%20Bottom%20Ash%20after%20Chemically1.pdf

id	ump-24885
recordtype	eprints
spelling	ump-248852019-07-17T04:27:43Z http://umpir.ump.edu.my/id/eprint/24885/ Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid Kusbiantoro, Andri Amalina Hanani, Ismail Rahimah, Embong TP Chemical technology Current trend in construction industry has highlighted the use of silica-rich supplementary cementitious materials from industrial wastes in the production of concrete. Numerous studies have validated the pozzolanic properties of these materials, yet coal bottom ash received only infamous reputation as a pozzolanic material, owing to its low reactivity and heavy metals contaminants. Therefore this study was purposed to enhance the pozzolanic reactivity of coal bottom ash through chemical pre-treatment process. Different concentrations of acids and treatment period were studied to obtain optimum parameters for pre-treatment process. Treated ash was characterized for its chemical oxide composition. Its effect on the hydration of cement was studied through the inclusion as cement replacement material in mortar mixtures. From the chemical oxide compositions, a combination of 0.5 M of H2SO4 and 1 hour soaking duration presented the highest SiO2 proportion in the ash. Its inclusion at 5% (by weight of cement) to replace cement proportion in mortar mixtures was able to enhance the compressive strength of mortar at later age, regardless of its slower strength development in the early age. Utilizing treated coal bottom ash as partial cement replacement material has unlocked new achievement for greener future in construction industry. Trans Tech Publications 2019 Conference or Workshop Item PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24885/1/Pozzolanic%20Reactivity%20of%20Coal%20Bottom%20Ash%20after%20Chemically1.pdf Kusbiantoro, Andri and Amalina Hanani, Ismail and Rahimah, Embong (2019) Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid. In: 7th International Conference on Nanostructures, Nanomaterials and Nanoengineering, ICNNN 2018 and International Conference on Materials Technology and Applications, ICMTA 2018, 26-29 October 201 , Sapporo; Japan. pp. 212-216., 947. ISSN 0255-5476 https://doi.org/10.4028/www.scientific.net/MSF.947.212 https://doi.org/10.4028/www.scientific.net/MSF.947.212
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TP Chemical technology
spellingShingle	TP Chemical technology Kusbiantoro, Andri Amalina Hanani, Ismail Rahimah, Embong Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
description	Current trend in construction industry has highlighted the use of silica-rich supplementary cementitious materials from industrial wastes in the production of concrete. Numerous studies have validated the pozzolanic properties of these materials, yet coal bottom ash received only infamous reputation as a pozzolanic material, owing to its low reactivity and heavy metals contaminants. Therefore this study was purposed to enhance the pozzolanic reactivity of coal bottom ash through chemical pre-treatment process. Different concentrations of acids and treatment period were studied to obtain optimum parameters for pre-treatment process. Treated ash was characterized for its chemical oxide composition. Its effect on the hydration of cement was studied through the inclusion as cement replacement material in mortar mixtures. From the chemical oxide compositions, a combination of 0.5 M of H2SO4 and 1 hour soaking duration presented the highest SiO2 proportion in the ash. Its inclusion at 5% (by weight of cement) to replace cement proportion in mortar mixtures was able to enhance the compressive strength of mortar at later age, regardless of its slower strength development in the early age. Utilizing treated coal bottom ash as partial cement replacement material has unlocked new achievement for greener future in construction industry.
format	Conference or Workshop Item
author	Kusbiantoro, Andri Amalina Hanani, Ismail Rahimah, Embong
author_facet	Kusbiantoro, Andri Amalina Hanani, Ismail Rahimah, Embong
author_sort	Kusbiantoro, Andri
title	Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
title_short	Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
title_full	Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
title_fullStr	Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
title_full_unstemmed	Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
title_sort	pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid
publisher	Trans Tech Publications
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/24885/ http://umpir.ump.edu.my/id/eprint/24885/ http://umpir.ump.edu.my/id/eprint/24885/ http://umpir.ump.edu.my/id/eprint/24885/1/Pozzolanic%20Reactivity%20of%20Coal%20Bottom%20Ash%20after%20Chemically1.pdf
first_indexed	2023-09-18T22:37:54Z
last_indexed	2023-09-18T22:37:54Z
_version_	1777416719206187008

Pozzolanic reactivity of coal bottom ash after chemically pre-treated with sulfuric acid

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