Effect of Hydraulic Seeding Treatments on of Road Cut Slope

Aims: In the present study, effect of different hydro seed binder combinations were evaluated on stability clay soil cut slope of road in the campus of Gorgan University of Agricultural Sciences and Natural Resources, Iran. Materials Methods: The hydroseed treatments were classified as A (5L m2 water, 50g m2 Festuca arundinacea L., 40g m2 polyacrylamide tackifier, 30g m2 starter fertilizer and 20g m2 super absorbent polymer), B (5L m2 water, 70g m2 Festuca arundinacea L., 50g m2 polyacrylamide tackifier, 40g m2 starter fertilizer and 30g m2 super absorbent polymer) and C (5L m2 water, 90g m2 Festuca arundinacea L., 60g m2 polyacrylamide tackifier, 50g m2 starter fertilizer and 40g m2 super absorbent polymer). Then mean weight diameter, aggregate stability, liquid limit, friction angle and, soil cohesion indices experiments in wet and dry conditions conducted in three replications for each treatment. Findings: Results showed that the maximum value of MWDwet (0.91mm), MWDdry (5.4mm), aggregate stability (88%), liquid limit (48%), plastic limit (35%), friction angle (44.9 degree) and soil cohesion (13.5kPa) obtained by application of hydroseed C. Minimum percentage of aggregate destruction (38%) and plastic index (13%) obtained in results of hydroseed C application. Conclusion: The application of hydraulic seeding treatments improved the structural stability, plastic index and shear strength of the soil. Future research in this subject requires to perform in the field. This study will eventually be used in the implementation section.