Experimental Study of Improving the Properties of Lime-Stabilized Structural Lateritic Soil for Highway Structural Works using Groundnut Shell Ash

This research considered the viability of groundnut shell ash (GSA) on lime-stabilized lateritic soil for highway structural works. Three samples soil, named A, B, and C, were gathered from Idita-Mokuro, NTA-Mokuro, ETF burrow pits, respectively, in Ile-Ife, Osun State, Nigeria. Preliminary tests completed their natural states when stabilized with optimum lime. Engineering properties performed while 2, 4, 6 % GSA contents added to at The Atterberg limit showed a significant reduction plasticity index A C Compaction test decrease maximum dry density 1,685 1,590 kg/m3 sample 1,599 1,512 1,396 1,270 stabilizing lime; introduction lime diminished all samples, reduced 1,435 1,385 2 4 contents, respectively. addition improved engineering soils as unsoaked CBR esteems expanded samples. At an dosage, triaxial shear strength 60.43 188.36 kN/m2 and, content, both B increased 19.19 201.48 30.62 111.65 kN/m2, Conclusively, toughness