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2025 | OriginalPaper | Chapter

Preliminary Assessment of Limestone Calcined Clay Cement (LC3) in Soil Stabilization for Geotechnical Applications

Authors : Joseph Mwiti Marangu, Loyford Muchui Mugambi, Julius Toeri Ratumo, Luca Valentini

Published in: Proceedings of the RILEM Spring Convention and Conference 2024

Publisher: Springer Nature Switzerland

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Abstract

In this paper, the experimental findings on the use of Limestone Calcined Clay Cement (LC3) in the stabilization of sub-grade expansive soils are reported. The effect of LC3 on mechanical properties of subgrade soil was investigated experimentally through the soaked California Bearing Ratio (CBR), Proctor and Atterberg limits tests. The difference in the performance between LC3 and Ordinary Portland Cement (OPC) treated subgrade soils was studied for comparison purposes. The LC3 and OPC stabilizers were separately mixed with the soil in the proportions of 1%, 1.5% and 2% by dry weight of the soil. The results showed that the addition of both LC3 and OPC increased plastic limit, reduced plastic index, liquid limit and linear shrinkage of the treated soils. The Maximum Dry Density (MDD) of the soil was observed to increase with a corresponding decrease in Optimum Moisture Content (OMC) upon adding varying cement dosages. Additionally, the soaked CBR of the treated soil was observed to increase significantly with increasing cement content. The maximum CBR and MDD improvement were observed at 2% cement dosage, while OMC was reduced, hence, it could be regarded as the optimum dosage for soil stabilization. The performance between LC3 and OPC treated subgrade was quite comparable. In conclusion, LC3 was found to improve the strength and stability of subgrade soil.

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Metadata
Title
Preliminary Assessment of Limestone Calcined Clay Cement (LC3) in Soil Stabilization for Geotechnical Applications
Authors
Joseph Mwiti Marangu
Loyford Muchui Mugambi
Julius Toeri Ratumo
Luca Valentini
Copyright Year
2025
DOI
https://doi.org/10.1007/978-3-031-70277-8_21