Vol 8, No 3 (2017) > Civil Engineering >

A Preliminary Investigation on the Geotechnical Properties of Blended Solid Wastes as Synthetic Fill Material

Jijo James, S. Vidhya Lakshmi, P. Kasinatha Pandian


Abstract: This study investigated
the possibility of developing a synthetic fill material by combining industrial
waste materials, thus, integrating the properties of cohesion and friction as a
replacement for natural soil. Biosolids and steel slag were selected for
proportioning of the synthetic fill material. They were blended in different
proportions and the geotechnical properties of the various blends were
investigated to determine the strength and bearing of the blended synthetic
material for fill applications. The results of the investigation were
encouraging with the index properties of the blends better than those of
biosolids. It was found that 25% to 40% steel slag blending produced the
maximum strength and bearing. The investigation revealed that blending of
industrial waste materials has the potential to perform the function of a
synthetic fill material in road embankments and backfills. However, further
studies are recommended to investigate its long term compressibility and
permeability and further improvement of bearing to meet local standards.
Keywords: Biosolids; Blending; Embankment; Slag steel; Synthetic fill material

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