Investigation on the potential use of solid plastic fibre as enhancer for consolidation behaviour in earthwork applications / Muhammad Syahiran Wazini Izani

This laboratory investigation has been carried out to evaluate the effect of solid plastic fibre on consolidation behaviour of the reinforced soil. The initial phase of this study includes of the investigation of the engineering properties of the soils. The effect of solid plastic fibre which is as reinforcement material prepared at optimum moisture content (OMC = 22%) and maximum dry density (MDD = 1.575g/cm3) at the different percentage of the fibre. In this experimental study, percentage solid plastic fibres used are 0%, 0.25%, 0.5%, 1% and 2% from the dry weight of the soil sample. The fibres were mixed with local sandy clay soil (Sand = 46.96%, Silt = 44.76% and Clay 8.27%). The study has found that the coefficient of volume change (mv) and compression index (Cc) values was increased from 0% to 1% and in declination trend after the 2% of the solid plastic fibre was added.. As for the coefficient of consolidation (Cv), the value rised with the increases of the percentage of solid plastic fibre used. Lastly, time rate of consolidation (t90) of the soil, display faster time as the increase of the percentage of the fibre used.