Abstract
ABSTRACT This present study deals with the enhancement of the strength of dispersive soil by adding various percentages of Ground granulated blast furnace slag (GGBS), cement clinker, and flyash. For this purpose, the mechanical properties of different mixes of GGBS, cement clinker and flyash combined as a whole are investigated by using the standard Proctor, unconfined compressive strength (UCS) and California bearing ratio (CBR) tests. Significantly increase in strength under UCS test after addition of GGBS, cement clinker, and flyash with the dispersive soil. The scanning electron microscope (SEM) images have indicated that the dispersive soil particles were bonded together with stabilizing materials to form hydrated particles – ettringite, C-A-S-H, C-S-H which take a vital role for development in strength because of the reaction between the soil and the stabilizing agents. Based on the results, it was observed that it could be utilized in civil engineering purposes. Abbreviations: GGBS: Ground granulated blast furnace slag; UCS: Unconfined compressive strength; CBR: California bearing ratio; SEM: Scanning electron microscope; XRD: X-ray diffraction; XRF: X-ray fluorescence; GBFS: Granulated blast furnace slag; BOFS: Basic oxygen furnace slag; MDD: Maximum dry unit weight; OMC: Optimum water content; EDX: Energy-propagating X-ray spectroscopy.
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