Effect of Hybridized Composite Materials on Engineering Properties of an Expansive Soil

Charles Kennedy, Terence Temilade Tam Wokoma, Gbinu Samuel Kabari

Abstract: This study investigated the susceptible to pavement degradation resulted in very many failures, potholes and cracks along the stretches of Odioku road, Ahoada West, Rivers State. Stabilizers were used in single and combined actions to determine the suitability of the composite material that will solve these problems. Results obtained of lime treated soil in single and double action of soil + lime + bagasse fibre treated soils of laterite and clay compaction results presented of OMC at preliminary engineering properties soil test are 12.39% (clay) and 11.79 (laterite) while MDD 1.640KN/m³ and 1.803KN/m³ respectively. Results of OMC lime treated soil of 2% to 10% increased from 12.39% to 14.93% (clay) and 11.79% to 13.22% (laterite). MDD increased from 1.640KN/m³ to 1.758KN/m³ (clay) and 1.803KN/m³ to 1.860KN/m³. soil + lime + bagasse fibre treated soils, OMC increased from 12.93% to 24.61% (clay) and 11.79% to 14.32% (laterite). MDD increased from 1.640KN/m³ to 1.864KN/m³ (clay) and 1.803KN/m³ to 1.841KN/m³ (laterite). CBR results obtained of lime + soil treated, increased from 7.6% to 16.4% (clay) and 9.8% to 40.8% at optimum of 0.75% line percentage inclusion of both soils. Beyond the optimum limit, crack formation was noticed which led to failure. Results of UCS of soil + lime treated increased from 78.6kPa to238.7kPa (clay) and 155kPa to 325kPa (laterite). Soil + lime +BSBF treated soil at mix ratio of lime + fibre 3.75% + 0.25%, 5.5% + 0.5%, 7.25% + 0.75% and 9.0% + 1.0% respectively, has strength increased from 78.6kPa to 308kPa (clay) and 155kPa to356kPa (laterite) .is sign of failure. Results of consistency limits of soil + lime treated soil, LL decreased from 56.1% to 43.4% (clay) and 39% to 36% (laterite), PL increased from 22.4% to 26.8% (clay) and 22% to 27% (laterite), IP decreased from 33.7% to 16.6% (clay) and 17% to 10.4% (laterite). For soil + lime + BSBF treated soil, LL decreased from 56.1% to 47.7% (clay) and 39% to 32%, LP increased from 22.4% to 24.7% (clay), 22% to 25% (laterite), IP decreased from 33.7% to 26.8% (clay) and 17% to 16.6% (laterite).