Effect of silica fume on the undrained strength parameters of dispersive soils

Dispersive soils are one of the problematic such as swelling and collapsible they common in many countries world. Due to dispersive soils, significant problems arise road embankments earth dams. Therefore, use is possible with treatment. Silica fume (SF) a waste material has been used concrete production instead partially cement, stabilization expansive civil engineering applications for different purposes. Within scope this study, determine dispersibility behavior soil sample, crumb test was performed. SF additive improve which determined have high dispersibility. The compaction properties specimens mixed proportions (0, 5, 10, 15, 20, 25 30%) were by standard Proctor test. Crumb tests performed assess potential prepared specimens, also unconsolidated undrained (UU) triaxial carried out evaluate strength parameters. UU experiments under 20 kPa, 40 kPa 60 effective cell pressures on cured 1, 7 28 days because occurred at shallow depths field applications. As result, it that feature sample treated improved depending content.