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A platform for research: civil engineering, architecture and urbanism
Investigations on Carbonation of Lime Stabilized Expansive Soil from Micro-Level Perspectives
Carbonation is a chemical reaction that occurs invariably throughout the service life of lime-stabilized soil. Carbonation results in densification owing to the precipitation of reaction product calcite within the pore structure. However, the pore structure of lime-stabilized soil varies during curing due to the progressive surface modifications and pozzolanic reactions. Given this, the present study investigates the effects of carbonation on the compressive strength of lime stabilized compacted expansive soil by varying the dosage of lime content and curing period. The chemical, molecular, and microstructure changes upon carbonation were assessed using a thermogravimetric analyzer, Fourier transform infrared spectrometer, and mercury intrusion porosimeter. Results showed that the porosity of lime stabilized soil increased with initial lime content and curing period. Also, the permeation of gas and consequent changes in the mechanical performance upon carbonation is observed to be highly dependent on the availability of macropores and residual lime in a stabilized expansive soil.
Investigations on Carbonation of Lime Stabilized Expansive Soil from Micro-Level Perspectives
Carbonation is a chemical reaction that occurs invariably throughout the service life of lime-stabilized soil. Carbonation results in densification owing to the precipitation of reaction product calcite within the pore structure. However, the pore structure of lime-stabilized soil varies during curing due to the progressive surface modifications and pozzolanic reactions. Given this, the present study investigates the effects of carbonation on the compressive strength of lime stabilized compacted expansive soil by varying the dosage of lime content and curing period. The chemical, molecular, and microstructure changes upon carbonation were assessed using a thermogravimetric analyzer, Fourier transform infrared spectrometer, and mercury intrusion porosimeter. Results showed that the porosity of lime stabilized soil increased with initial lime content and curing period. Also, the permeation of gas and consequent changes in the mechanical performance upon carbonation is observed to be highly dependent on the availability of macropores and residual lime in a stabilized expansive soil.
Investigations on Carbonation of Lime Stabilized Expansive Soil from Micro-Level Perspectives
Padmaraj, Dhanalakshmi (author) / Arnepalli, D. N. (author)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 110-119
2022-03-17
Conference paper
Electronic Resource
English
Investigations on Carbonation of Lime Stabilized Expansive Soil from Micro-Level Perspectives
| British Library Conference Proceedings | 2022
Experimental Investigation on Carbonation Behavior in Lime-Stabilized Expansive Soil
| DOAJ | 2020