Joy, A and Abraham, BM and Sridharan, A (2021) Effect of organic matter on the shear strength of lime stabilised clayey soils. In: Proceedings of the Institution of Civil Engineers: Ground Improvement .
Full text not available from this repository.Abstract
Soils containing organic matter exhibit low shear strength and high compressibility. Any construction on such soils is very challenging. Lime stabilisation has proved to improve the engineering properties of clayey soils. In this paper, an attempt is made to study the effect of organic matter (starch and peat) on shear strength of lime stabilised clayey soils subjected to longer curing periods up to 180 days. Most of the studies reported the strength behavior of lime stabilised organic soils only for small curing periods up to 60 days. Vane shear tests were carried out on artificially prepared organic soil mixtures treated with 6 lime at different curing periods (0, 7, 30, 60, 90, and 180 days). Results indicate that the improving effect of lime gets deteriorated in the presence of organic matter as the curing period increases. It was observed that, for lime stabilised clayey soils containing organic matter, the strength seemed to increase up to 30 days after which it ceased. The strength reduction in lime stabilised clayey soils containing organic matter depended on pH and functional groups present in them. Fourier transform infrared spectroscopy (FTIR) of the cured samples was also carried out to examine the microstructure changes responsible for the strength change in lime stabilised clayey soils. © 2020 ICE Publishing: All rights reserved.
| Item Type: | Journal Article |
|---|---|
| Publication: | Proceedings of the Institution of Civil Engineers: Ground Improvement |
| Publisher: | ICE Publishing |
| Additional Information: | The copyright for this article belongs to ICE Publishing |
| Keywords: | Biogeochemistry; Curing; Fourier transform infrared spectroscopy; Organic compounds; Shear flow; Shear strength; Soil mechanics; Soil testing; Soils; Stabilization, Clayey soils; Curing periods; Engineering properties; Lime stabilization; Organic soil; Organics; Shears strength; Soil stabilization; Strength & testing of material; Strength testing, Lime |
| Department/Centre: | Division of Mechanical Sciences > Civil Engineering |
| Date Deposited: | 13 Dec 2021 11:39 |
| Last Modified: | 13 Dec 2021 11:39 |
| URI: | http://eprints.iisc.ac.in/id/eprint/70769 |
Actions (login required)
 |
View Item |
