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Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties

Environmental concern raised by the production of ordinary Portland cement (OPC), is behind the search for greener construction materials and remediation. One such material is alkali activated mortars (AAMs). It is well known that the high molarity of sodium hydroxide (12–16 M) and high content of s...

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Main Authors:	Huseien, Ghasan Fahim, Ismail, Mohammad, Md. Tahir, Mahmood, Mirza, Jahangir, A. Khalid, Nur Hafizah, Asaad, Mohammad Ali, Husein, Ahmed Abdulameer, Sarbini, Noor Nabilah
Format:	Article
Published:	Elsevier Ltd 2018
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/85423/ http://dx.doi.org/10.1016/j.conbuildmat.2018.03.031
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spelling	my.utm.854232020-06-16T06:48:32Z http://eprints.utm.my/id/eprint/85423/ Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties Huseien, Ghasan Fahim Ismail, Mohammad Md. Tahir, Mahmood Mirza, Jahangir A. Khalid, Nur Hafizah Asaad, Mohammad Ali Husein, Ahmed Abdulameer Sarbini, Noor Nabilah TA Engineering (General). Civil engineering (General) Environmental concern raised by the production of ordinary Portland cement (OPC), is behind the search for greener construction materials and remediation. One such material is alkali activated mortars (AAMs). It is well known that the high molarity of sodium hydroxide (12–16 M) and high content of sodium silicate (sodium silicate to sodium hydroxide higher than 2.5) have negative impacts on the environment. Driven by this idea, we prepared some binary alkali activated mortars by combining palm oil fuel ash (POFA) and ground blast furnace slag (GBFS) at varying ratios. The effect of low concentration alkaline solution on the fresh, mechanical and durable properties of alkali activated was determined. The ratio of sodium hydroxide (molarity 4 M) (NH) to sodium silicate (NS) in the mixture was kept at 0.75. Microstructures of the prepared alkali activated mortars were analyzed using SEM, XRD and FTIR measurements. The achieved high strength (≈72 MPa at age of 28 days) of the alkali activated mortars was attributed to the synergy between GBFS and POFA. Partial replacement of GBFS with POFA was demonstrated to be beneficial for improving the compressive strength, durability and resistance against sulphuric acid attack. Meanwhile, calcium aluminium silicate hydrate (CASH) gel was discerned to be the main reaction product of POFA and GBFS in these binary systems. It was established that the proposed AAMs can contribute towards the development of sustainable materials. Elsevier Ltd 2018-05 Article PeerReviewed Huseien, Ghasan Fahim and Ismail, Mohammad and Md. Tahir, Mahmood and Mirza, Jahangir and A. Khalid, Nur Hafizah and Asaad, Mohammad Ali and Husein, Ahmed Abdulameer and Sarbini, Noor Nabilah (2018) Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties. Construction and Building Materials, 170 . pp. 235-244. ISSN 0950-0618 http://dx.doi.org/10.1016/j.conbuildmat.2018.03.031
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Huseien, Ghasan Fahim Ismail, Mohammad Md. Tahir, Mahmood Mirza, Jahangir A. Khalid, Nur Hafizah Asaad, Mohammad Ali Husein, Ahmed Abdulameer Sarbini, Noor Nabilah Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties
description	Environmental concern raised by the production of ordinary Portland cement (OPC), is behind the search for greener construction materials and remediation. One such material is alkali activated mortars (AAMs). It is well known that the high molarity of sodium hydroxide (12–16 M) and high content of sodium silicate (sodium silicate to sodium hydroxide higher than 2.5) have negative impacts on the environment. Driven by this idea, we prepared some binary alkali activated mortars by combining palm oil fuel ash (POFA) and ground blast furnace slag (GBFS) at varying ratios. The effect of low concentration alkaline solution on the fresh, mechanical and durable properties of alkali activated was determined. The ratio of sodium hydroxide (molarity 4 M) (NH) to sodium silicate (NS) in the mixture was kept at 0.75. Microstructures of the prepared alkali activated mortars were analyzed using SEM, XRD and FTIR measurements. The achieved high strength (≈72 MPa at age of 28 days) of the alkali activated mortars was attributed to the synergy between GBFS and POFA. Partial replacement of GBFS with POFA was demonstrated to be beneficial for improving the compressive strength, durability and resistance against sulphuric acid attack. Meanwhile, calcium aluminium silicate hydrate (CASH) gel was discerned to be the main reaction product of POFA and GBFS in these binary systems. It was established that the proposed AAMs can contribute towards the development of sustainable materials.
format	Article
author	Huseien, Ghasan Fahim Ismail, Mohammad Md. Tahir, Mahmood Mirza, Jahangir A. Khalid, Nur Hafizah Asaad, Mohammad Ali Husein, Ahmed Abdulameer Sarbini, Noor Nabilah
author_facet	Huseien, Ghasan Fahim Ismail, Mohammad Md. Tahir, Mahmood Mirza, Jahangir A. Khalid, Nur Hafizah Asaad, Mohammad Ali Husein, Ahmed Abdulameer Sarbini, Noor Nabilah
author_sort	Huseien, Ghasan Fahim
title	Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties
title_short	Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties
title_full	Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties
title_fullStr	Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties
title_full_unstemmed	Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties
title_sort	synergism between palm oil fuel ash and slag: production of environmental-friendly alkali activated mortars with enhanced properties
publisher	Elsevier Ltd
publishDate	2018
url	http://eprints.utm.my/id/eprint/85423/ http://dx.doi.org/10.1016/j.conbuildmat.2018.03.031
_version_	1672610532105912320
score	13.211869

Synergism between palm oil fuel ash and slag: Production of environmental-friendly alkali activated mortars with enhanced properties

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