A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Accelerated carbonation of steel slag: A review of methods, mechanisms and influencing factors
https://orcid.org/0000-0001-9241-9367
Abstract The disposal of steel slag in landfills not only squanders precious landfill resources but also results in significant environmental contamination. Steel slag can be used to replace cement and natural aggregates in concrete. Nonetheless, utilizing untreated steel slag directly presents a substantial hazard to the structural characteristics and durability of concrete. To avoid this problem, study on accelerated carbonation of steel slag as construction materials has been extensively conducted. This review paper begins by introducing the classification and physicochemical properties of steel slag; it then describes the typical approaches of steel slag carbonation, including direct carbonation (dry carbonation, wet carbonation) and indirect carbonation (pH-swing, microbial carbonation), along with their processes and carbonation mechanisms. Furthermore, based on the reviewed literature, the influences of various reaction parameters such as reaction time, liquid-to-solid ratio, temperature, additives, CO2 concentration, pressure, pH on carbonation effectiveness are analyzed. Also, the impact of carbonated steel slag on the micro-pore structure, stability, workability, and mechanical properties of concrete is discussed. Finally, the challenges and future work of using carbonated steel slag as construction materials are provided.
Highlights The current papers on steel slag classification, physicochemical properties, and methods for accelerated carbonation are reviewed. The traditional carbonation methods, as well as recently proposed microbial carbonation methods are analyzed. The factors influencing the efficiency of steel slag carbonation are summarized. The impact of carbonated steel slag on concrete properties are concluded. Insights into accelerated carbonation methods for steel slag and future work are provided.
Accelerated carbonation of steel slag: A review of methods, mechanisms and influencing factors
https://orcid.org/0000-0001-9241-9367
Abstract The disposal of steel slag in landfills not only squanders precious landfill resources but also results in significant environmental contamination. Steel slag can be used to replace cement and natural aggregates in concrete. Nonetheless, utilizing untreated steel slag directly presents a substantial hazard to the structural characteristics and durability of concrete. To avoid this problem, study on accelerated carbonation of steel slag as construction materials has been extensively conducted. This review paper begins by introducing the classification and physicochemical properties of steel slag; it then describes the typical approaches of steel slag carbonation, including direct carbonation (dry carbonation, wet carbonation) and indirect carbonation (pH-swing, microbial carbonation), along with their processes and carbonation mechanisms. Furthermore, based on the reviewed literature, the influences of various reaction parameters such as reaction time, liquid-to-solid ratio, temperature, additives, CO2 concentration, pressure, pH on carbonation effectiveness are analyzed. Also, the impact of carbonated steel slag on the micro-pore structure, stability, workability, and mechanical properties of concrete is discussed. Finally, the challenges and future work of using carbonated steel slag as construction materials are provided.
Highlights The current papers on steel slag classification, physicochemical properties, and methods for accelerated carbonation are reviewed. The traditional carbonation methods, as well as recently proposed microbial carbonation methods are analyzed. The factors influencing the efficiency of steel slag carbonation are summarized. The impact of carbonated steel slag on concrete properties are concluded. Insights into accelerated carbonation methods for steel slag and future work are provided.
Accelerated carbonation of steel slag: A review of methods, mechanisms and influencing factors
https://orcid.org/0000-0001-9241-9367
Abstract The disposal of steel slag in landfills not only squanders precious landfill resources but also results in significant environmental contamination. Steel slag can be used to replace cement and natural aggregates in concrete. Nonetheless, utilizing untreated steel slag directly presents a substantial hazard to the structural characteristics and durability of concrete. To avoid this problem, study on accelerated carbonation of steel slag as construction materials has been extensively conducted. This review paper begins by introducing the classification and physicochemical properties of steel slag; it then describes the typical approaches of steel slag carbonation, including direct carbonation (dry carbonation, wet carbonation) and indirect carbonation (pH-swing, microbial carbonation), along with their processes and carbonation mechanisms. Furthermore, based on the reviewed literature, the influences of various reaction parameters such as reaction time, liquid-to-solid ratio, temperature, additives, CO2 concentration, pressure, pH on carbonation effectiveness are analyzed. Also, the impact of carbonated steel slag on the micro-pore structure, stability, workability, and mechanical properties of concrete is discussed. Finally, the challenges and future work of using carbonated steel slag as construction materials are provided.
Highlights The current papers on steel slag classification, physicochemical properties, and methods for accelerated carbonation are reviewed. The traditional carbonation methods, as well as recently proposed microbial carbonation methods are analyzed. The factors influencing the efficiency of steel slag carbonation are summarized. The impact of carbonated steel slag on concrete properties are concluded. Insights into accelerated carbonation methods for steel slag and future work are provided.
Accelerated carbonation of steel slag: A review of methods, mechanisms and influencing factors
Huang, Xiaoli (author) / Zhang, Junfei (author) / Zhang, Lei (author)
2023-12-12
Article (Journal)
Electronic Resource
English
Effects of thin-film accelerated carbonation on steel slag leaching
| Tema Archive | 2015
Utilization of accelerated carbonation to enhance the application of steel slag: a review
| Taylor & Francis Verlag | 2023
Exploring natural and accelerated carbonation of alkali-activated slag
| Elsevier | 2024