Abstract
This research used carbonate minerals generated through the capture of CO2 as an eco-friendly binder to enhance engineering properties of soils. The carbonate binders were formed by combining free carbonate ions (CO32-) obtained from CO2 capture and Fe2+ (from FeCl2) and Ca2+ (from CaCl2), which produced CaFeCO3 and FeCO3 carbonate minerals. These minerals were employed to enhance the engineering characteristics of a granular soil and were detected by Scanning Electron Microscope (SEM) analysis in the treated soil specimens. Results of uniaxial compressive strength (UCS) tests conducted under dry conditions showed that soil specimens treated with CaFeCO3 exhibited a higher strength compared to those treated with FeCO3. Generally, both types of carbonate minerals appear to have led to cementation of the treated specimens, responsible for the observed strength gain.
| Original language | English |
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| Publication status | Published - 16 Jun 2024 |
| Event | 11th International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE 2024) and SECOTOX Conference - Duration: 16 Jun 2024 → … |
Conference
| Conference | 11th International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE 2024) and SECOTOX Conference |
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| Period | 16/06/24 → … |
Keywords
- CO2-induced carbonate minerals, FeCO3, CaFeCO3, Soil improvement