Application of CO2 -induced carbonate minerals for soil treatment

Conference paper

Abdeh Keykha, H., Mavroulidou, M. and Mohamadzadeh Romiani, H. (2024). Application of CO2 -induced carbonate minerals for soil treatment. 11th International Conference on Environmental Management, Engineering, Planning and Economics (CEMEPE 2024) and SECOTOX Conference. Lefkada, Greece 16 Jun - 20 Jul 2024
AuthorsAbdeh Keykha, H., Mavroulidou, M. and Mohamadzadeh Romiani, H.
TypeConference paper
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.

KeywordsCO2-induced carbonate minerals, FeCO3, CaFeCO3, Soil improvement
Year2024
Web address (URL)https://cemepe11.civil.auth.gr/
Publication dates
Print16 Jun 2024
Publication process dates
Accepted10 Apr 2024
Deposited01 Jul 2024
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