Stabilization of Lateritic Soil with Scrap Tyre Crumb Rubber

Non-lateritic soils are commonly used for construction purposes. However, due to the variability of the properties of the soil, it does not meet the design requirement. In this study, non-lateritic soil sample was taken from a borrow pit in Dungulbi, Bauchi State Nigeria. The materials were characterized and then stabilized with scrap tyre crumb rubber (STCR) in concentration of 1, 2, 3, 4, and 5% by dry weight of the soil for various sizes of scrap tyre crumbs rubber (STCR) in the range (i.e. 0.212, 2.36, 3.35, and 4.75 mm). The test conducted on the non-lateritic soil-STCR includes compaction using three energies level and durability. The results obtained indicate a general decrease in both optimum moisture content (OMC) and maximum dry density (MDD) as the STCR contents increases. For all the three different compaction energy levels used, the durability decreased with increase in the STCR content. The BSL compactive efforts resulted in higher durability values than the samples compacted using BSH and WAS compactive efforts. The highest durability obtained with the BSL compaction effort could be attributed to decrease in compressibility which is believed to be caused by lower compaction energy and less orientation of adjacent particles during compaction.