Staff View: From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete

From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete

This research focuses on recycling lime sludge as a calcium carbonate (CaCO3) source in producing a low-clinker cementitious binder and other supplementary cementitious materials. The study comprises three main phases. In the first phase, raw lime sludge collected from the textile industry was analy...

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Main Authors:	Murali G., Wong L.S., Ramkumar V.R., Abid S.R., Karthik S.
Other Authors:	57203952839
Format:	Article
Published:	Elsevier Ltd 2025
Subjects:	Blending Calcite Calcium carbonate Calcium silicate Cements Energy conservation Hydration Lime Microstructure Recycling Silica fume Silicates Textile industry Calcined clay Cementitious binders Energy savings Energy-savings Hydration mechanisms Lime sludge Metal microstructure Research focus Strength of concrete Supplementary cementitious material Compressive strength
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spelling	my.uniten.dspace-366532025-03-03T15:43:40Z From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete Murali G. Wong L.S. Ramkumar V.R. Abid S.R. Karthik S. 57203952839 55504782500 56585579400 56548386400 57336449100 Blending Calcite Calcium carbonate Calcium silicate Cements Energy conservation Hydration Lime Microstructure Recycling Silica fume Silicates Textile industry Calcined clay Cementitious binders Energy savings Energy-savings Hydration mechanisms Lime sludge Metal microstructure Research focus Strength of concrete Supplementary cementitious material Compressive strength This research focuses on recycling lime sludge as a calcium carbonate (CaCO3) source in producing a low-clinker cementitious binder and other supplementary cementitious materials. The study comprises three main phases. In the first phase, raw lime sludge collected from the textile industry was analyzed for pH, metal content, anions, and microstructure characterization. The second phase involved recycling and blending lime sludge with other materials to create a low-clinker binder. Various physical properties of the blended cement, consistency, setting time, fineness, and soundness, were examined. The third phase concentrated on understanding these cementitious system's hydration mechanisms, strength development, and microstructure evolution. Notably, the study found that incorporating recycled lime sludge into the binder components resulted in desirable physical and chemical properties. The 15% recycled lime sludge blend with 30% calcined clay promotes the ideal hydration reactions necessary to enhance concrete performance. Moreover, it demonstrated the positive influence of recycled lime sludge on cement properties and hydration products. The specimen, consisting of 45% calcined clay, demonstrated the highest compressive strength at 28 days, followed by the C2 specimen, comprising 30% calcined clay and 15% recycled lime sludge. The strength improvement is primarily attributed to the formation of additional hydrated calcium silicate, a key product of hydration that precipitates within the aqueous voids, contributing to developing a more compact structure. ? 2024 Elsevier Ltd Final 2025-03-03T07:43:40Z 2025-03-03T07:43:40Z 2024 Article 10.1016/j.jobe.2024.108935 2-s2.0-85186524297 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85186524297&doi=10.1016%2fj.jobe.2024.108935&partnerID=40&md5=362530da3cc0e62ddcffc1f935a04a11 https://irepository.uniten.edu.my/handle/123456789/36653 86 108935 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	Blending Calcite Calcium carbonate Calcium silicate Cements Energy conservation Hydration Lime Microstructure Recycling Silica fume Silicates Textile industry Calcined clay Cementitious binders Energy savings Energy-savings Hydration mechanisms Lime sludge Metal microstructure Research focus Strength of concrete Supplementary cementitious material Compressive strength
spellingShingle	Blending Calcite Calcium carbonate Calcium silicate Cements Energy conservation Hydration Lime Microstructure Recycling Silica fume Silicates Textile industry Calcined clay Cementitious binders Energy savings Energy-savings Hydration mechanisms Lime sludge Metal microstructure Research focus Strength of concrete Supplementary cementitious material Compressive strength Murali G. Wong L.S. Ramkumar V.R. Abid S.R. Karthik S. From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
description	This research focuses on recycling lime sludge as a calcium carbonate (CaCO3) source in producing a low-clinker cementitious binder and other supplementary cementitious materials. The study comprises three main phases. In the first phase, raw lime sludge collected from the textile industry was analyzed for pH, metal content, anions, and microstructure characterization. The second phase involved recycling and blending lime sludge with other materials to create a low-clinker binder. Various physical properties of the blended cement, consistency, setting time, fineness, and soundness, were examined. The third phase concentrated on understanding these cementitious system's hydration mechanisms, strength development, and microstructure evolution. Notably, the study found that incorporating recycled lime sludge into the binder components resulted in desirable physical and chemical properties. The 15% recycled lime sludge blend with 30% calcined clay promotes the ideal hydration reactions necessary to enhance concrete performance. Moreover, it demonstrated the positive influence of recycled lime sludge on cement properties and hydration products. The specimen, consisting of 45% calcined clay, demonstrated the highest compressive strength at 28 days, followed by the C2 specimen, comprising 30% calcined clay and 15% recycled lime sludge. The strength improvement is primarily attributed to the formation of additional hydrated calcium silicate, a key product of hydration that precipitates within the aqueous voids, contributing to developing a more compact structure. ? 2024 Elsevier Ltd
author2	57203952839
author_facet	57203952839 Murali G. Wong L.S. Ramkumar V.R. Abid S.R. Karthik S.
format	Article
author	Murali G. Wong L.S. Ramkumar V.R. Abid S.R. Karthik S.
author_sort	Murali G.
title	From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
title_short	From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
title_full	From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
title_fullStr	From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
title_full_unstemmed	From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
title_sort	from waste to resource recycled lime sludge: sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete
publisher	Elsevier Ltd
publishDate	2025
_version_	1825816242062098432
score	13.244413

From waste to resource recycled lime sludge: Sustainable low clinker cementitious binder, a comprehensive study on hydration, strength of concrete

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