Original scientific paper
https://doi.org/10.13167/2021.22.6
WETTING AND DRYING RESISTANCE OF LIME-STABILIZED EXPANSIVE SOILS MODIFIED WITH NANO-ALUMINA
Jijo James
orcid.org/0000-0002-1167-8066
; Sri Sivasubramaniya Nadar College of Engineering, Department of Civil Engineering
S V Sivapriya
orcid.org/0000-0002-9818-1393
; Sri Sivasubramaniya Nadar College of Engineering, Department of Civil Engineering
Sajid Ali
orcid.org/0000-0001-8534-6470
; Sri Sivasubramaniya Nadar College of Engineering, Department of Civil Engineering
T R Madhu
; Sri Sivasubramaniya Nadar College of Engineering, Department of Civil Engineering
Basudev Singh
orcid.org/0000-0001-8534-6470
; Sri Sivasubramaniya Nadar College of Engineering, Department of Civil Engineering
Abstract
Weak soil at construction sites necessitates ground improvement. Chemical stabilization is typically carried out using either lime or cement. The primary objective of this study was to assess the strength and durability of lime-stabilized soils modified with nano-alumina (NA). This study adopted the scientifically established initial consumption of lime (ICL) content for soil stabilization. In addition, nano-alumina was added in varying percentages as an auxiliary additive. It was observed that 0.5 % of nano-alumina was optimal with respect to the ICL for maximizing the soil stabilization. The stabilized soils were cured for 0, 7, 14, and 28 days. Post-curing testing revealed that the strength increased sixfold for the optimal combination, compared with the virgin soil. To understand the durability behavior of the optimal combination, the stabilized soil specimens were subjected to wetting and drying cycles after 28 days of curing. The optimal combination was nearly as durable as that of the lime-stabilized soil subjected to five cycles of wetting and drying.
Keywords
Expansive soil; lime; unconfined compressive strength; nano- alumina; durability; wetting-drying
Hrčak ID:
261281
URI
Publication date:
30.7.2021.
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