ABSTRACT
Numerous studies have been carried out to improve the strength characteristics of clay soil using various admixtures and mechanical methods. This study focuses on the influence of Ground Granulated Blast Furnace Slag (GGBS) and banana fibres in improving the strength characteristics of clay soil. GGBS is a known by-product of iron manufacturing industries and banana fibre is a locally available, economic, and eco-friendly agricultural waste produced from the banana plantation. Virgin soils and various combinations of clay soil with GGBS and banana fibres are evaluated by analysing their index properties, compaction, permeability, and strength characteristics. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis have been carried out to understand the physical and mechanical behaviours of soil samples before and after treatment. Based on the results the optimal percentage of GGBS and banana Fibre mixture in clay soil is recommended indicating its suitability as a sustainable stabilizing material.
