Investigation on the performance of ‘Fino’ materials to stabilize expansive soil: A case study in Yeka Sub City, Addis Ababa, Ethiopia

Expansive soil swells when it is wet, and will shrink dries. Due to this behavior of the soil, strength other properties are inferior. To improve its properties, necessary stabilize with different stabilizers. Soil stabilization a process treat maintain, alter, or expansive performance. In study, potential 'Fino' as stabilizing additive was investigated for improving engineering be used subgrade material. The evaluation involved determination Free Swell test, CBR Atterberg's limits, Proctor test in natural state well mixed varying proportions 'Fino.' practices were performed on six 5%, 10%, 15%, 20%, 25% 30 % soil. research result indicated considerable reduction Swelling, Maximum dry Density improved. Optimum moisture content decreased increasing At 30% 'Fino,' values increased from 1.06% 5.94%, Liquid Limit 95.2% 29.4%, plasticity index 57.24% 17.82% degree expansion has reduced very high medium. Hence, concluded that at shown significant improvement soil's meeting ERA AASHTO Standard specifications requirements road