Staff View: Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials

Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials

Nowadays, the use of environmentally friendly, long-lasting building materials with minimal energy and carbon dioxide emissions are highly recommended. Some of these materials can be made from industrial and agricultural wastes. By replacing ordinary Portland cement (OPC) with large volume of fly as...

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Main Authors:	Huseien G.F., Tang W., Yu Y., Wong L.S., Mirza J., Dong K., Gu X.
Other Authors:	56814956200
Format:	Article
Published:	Elsevier Ltd 2025
Subjects:	Agricultural wastes Bond strength (materials) Bottles Carbon capture and utilization Cement manufacture Concrete industry Effluent treatment Emission control Land fill Portland cement Sustainable development Zero-carbon % reductions Bottle glass Carbon dioxide emissions Eco-friendly Eco-friendly repair material Glass wastes High volume fly ash Ordinary Portland cement Repair materials Waste glass Fly ash
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spelling	my.uniten.dspace-363692025-03-03T15:42:07Z Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials Huseien G.F. Tang W. Yu Y. Wong L.S. Mirza J. Dong K. Gu X. 56814956200 24802547200 56430081600 55504782500 7004501946 26641752100 57204071619 Agricultural wastes Bond strength (materials) Bottles Carbon capture and utilization Cement manufacture Concrete industry Effluent treatment Emission control Land fill Portland cement Sustainable development Zero-carbon % reductions Bottle glass Carbon dioxide emissions Eco-friendly Eco-friendly repair material Glass wastes High volume fly ash Ordinary Portland cement Repair materials Waste glass Fly ash Nowadays, the use of environmentally friendly, long-lasting building materials with minimal energy and carbon dioxide emissions are highly recommended. Some of these materials can be made from industrial and agricultural wastes. By replacing ordinary Portland cement (OPC) with large volume of fly ash waste (FA), environmental issues associated with landfill disposal and cement manufacture can be mitigated. Nonetheless, using a high amount of FA (up to 50 %) to replace cement resulted in poor strength performance, particularly during early age. This experimental study created an increased strength cement mortar containing a high volume of FA (60 %) and bottle glass waste nanoparticles (BGWNPs). In this experiment BGWNPs were prepared and 2, 4, 6, 8 and 10 vol% of them were used as a replacement of OPC-FA binder. According to the results, by adding 0?6 % of BGWNPs to a high-volume FA matrix considerably increased the bond strength (from 12.5 % to 39.1 %). On the other hand, the findings revealed that the addition of nanoparticles (up to 6 %) caused a modest reduction in strength values. Other engineering and microstructure properties showed a similar pattern. The matrix with 6 % BGWNPs displayed the best performance when compared to other levels. The results also showed that replacing OPC by high volume FA incorporating BGWNPs significantly improved the durability of proposed mortar, such as reduction in drying shrinkage and increased acid attack and abrasion resistance. Related to the environment benefits, the proposed mortars contributed in a reduction of carbon dioxide emission, energy consumption and cost of binder by 61.9 %, 54.3 % and 50.6 % compared to OPC, respectively. To conclude, the use of BGWNPs make it possible to produce high volumes of FA-based cement mortars with acceptable mechanical and durable properties for concrete repair applications in the construction industry. Additionally, sustainability can be attained by lowering pollution, recycling waste, and finding solutions to landfill problems. ? 2024 Elsevier Ltd Final 2025-03-03T07:42:07Z 2025-03-03T07:42:07Z 2024 Article 10.1016/j.conbuildmat.2024.138022 2-s2.0-85202347277 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85202347277&doi=10.1016%2fj.conbuildmat.2024.138022&partnerID=40&md5=03cbc4c0693956ee43c5c6b2783a6395 https://irepository.uniten.edu.my/handle/123456789/36369 447 138022 Elsevier Ltd Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Agricultural wastes Bond strength (materials) Bottles Carbon capture and utilization Cement manufacture Concrete industry Effluent treatment Emission control Land fill Portland cement Sustainable development Zero-carbon % reductions Bottle glass Carbon dioxide emissions Eco-friendly Eco-friendly repair material Glass wastes High volume fly ash Ordinary Portland cement Repair materials Waste glass Fly ash
spellingShingle	Agricultural wastes Bond strength (materials) Bottles Carbon capture and utilization Cement manufacture Concrete industry Effluent treatment Emission control Land fill Portland cement Sustainable development Zero-carbon % reductions Bottle glass Carbon dioxide emissions Eco-friendly Eco-friendly repair material Glass wastes High volume fly ash Ordinary Portland cement Repair materials Waste glass Fly ash Huseien G.F. Tang W. Yu Y. Wong L.S. Mirza J. Dong K. Gu X. Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
description	Nowadays, the use of environmentally friendly, long-lasting building materials with minimal energy and carbon dioxide emissions are highly recommended. Some of these materials can be made from industrial and agricultural wastes. By replacing ordinary Portland cement (OPC) with large volume of fly ash waste (FA), environmental issues associated with landfill disposal and cement manufacture can be mitigated. Nonetheless, using a high amount of FA (up to 50 %) to replace cement resulted in poor strength performance, particularly during early age. This experimental study created an increased strength cement mortar containing a high volume of FA (60 %) and bottle glass waste nanoparticles (BGWNPs). In this experiment BGWNPs were prepared and 2, 4, 6, 8 and 10 vol% of them were used as a replacement of OPC-FA binder. According to the results, by adding 0?6 % of BGWNPs to a high-volume FA matrix considerably increased the bond strength (from 12.5 % to 39.1 %). On the other hand, the findings revealed that the addition of nanoparticles (up to 6 %) caused a modest reduction in strength values. Other engineering and microstructure properties showed a similar pattern. The matrix with 6 % BGWNPs displayed the best performance when compared to other levels. The results also showed that replacing OPC by high volume FA incorporating BGWNPs significantly improved the durability of proposed mortar, such as reduction in drying shrinkage and increased acid attack and abrasion resistance. Related to the environment benefits, the proposed mortars contributed in a reduction of carbon dioxide emission, energy consumption and cost of binder by 61.9 %, 54.3 % and 50.6 % compared to OPC, respectively. To conclude, the use of BGWNPs make it possible to produce high volumes of FA-based cement mortars with acceptable mechanical and durable properties for concrete repair applications in the construction industry. Additionally, sustainability can be attained by lowering pollution, recycling waste, and finding solutions to landfill problems. ? 2024 Elsevier Ltd
author2	56814956200
author_facet	56814956200 Huseien G.F. Tang W. Yu Y. Wong L.S. Mirza J. Dong K. Gu X.
format	Article
author	Huseien G.F. Tang W. Yu Y. Wong L.S. Mirza J. Dong K. Gu X.
author_sort	Huseien G.F.
title	Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
title_short	Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
title_full	Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
title_fullStr	Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
title_full_unstemmed	Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
title_sort	evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials
publisher	Elsevier Ltd
publishDate	2025
_version_	1825816226812657664
score	13.244413

Evaluation of high-volume fly-ash cementitious binders incorporating nanosilica as eco-friendly sustainable concrete repair materials

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