Circular concrete: Prospects and possibilities of CO2 mineralization process for sustainable concrete systems
By: Aswathy, Rajendran
.
Contributor(s): Desai, Pranav.
Publisher: Mumbai ACC LTD 2023Edition: Vol.97(5), May.Description: 8-22p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: We are faced with an era where availability of raw materials for construction is discussed as an under threat point and possibilities of alternate binders and aggregates are researched extensively. Although there are a number of possibilities emerging, such as LC3 cement and composite cements with lower clinker proportions, the alternative binders used in these systems are by-products of other industries, such as ceramics, thermal power plants, steel plants, and so on. What if we are able to provide a two-level sustainability idea of utilizing the waste generated within construction industry to be utilized for a new construction? The novelty of CO2 induced mineralization of hydrated concrete fines comes from this fact and it can be used to serve multiple utilization points such as: (i) Kiln feeder material; (ii) Alternate SCM and many more. The purpose of this paper is to review the aspect of the need for such projects, the mechanism of CO2 mineralization in hydrated products, phase changes and micro-structural alterations, the use of the mineralized powder, and practical explorations of the venture from cement to admixture companies. The paper is intended to act as a comprehensive data provider for the researchers interested in the area, given the global interest that has aroused in this research area.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2023-0960 |
We are faced with an era where availability of raw materials for construction is discussed as an under threat point and possibilities of alternate binders and aggregates are researched extensively. Although there are a number of possibilities emerging, such as LC3 cement and composite cements with lower clinker proportions, the alternative binders used in these systems are by-products of other industries, such as ceramics, thermal power plants, steel plants, and so on. What if we are able to provide a two-level sustainability idea of utilizing the waste generated within construction industry to be utilized for a new construction? The novelty of CO2 induced mineralization of hydrated concrete fines comes from this fact and it can be used to serve multiple utilization points such as: (i) Kiln feeder material; (ii) Alternate SCM and many more. The purpose of this paper is to review the aspect of the need for such projects, the mechanism of CO2 mineralization in hydrated products, phase changes and micro-structural alterations, the use of the mineralized powder, and practical explorations of the venture from cement to admixture companies. The paper is intended to act as a comprehensive data provider for the researchers interested in the area, given the global interest that has aroused in this research area.
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