Mechanical properties of a high plasticity silty soil stabilized with geopolimeric binder and micro fiber ınclusion

This thesis study is based on the improvement of a high plasticity silty soil with the addition of activator-activated C-Class fly ash, consisting of 50% sodium hydroxide and 50% sodium silicate components by mass, and fiber reinforcement. Fiber reinforcement with a length of 3 mm and 12 mm was used in the study. The effect of different fiber reinforcement length combinations on bending and shear strength parameters on a high plasticity silty soil improved with alkali active C-class fly ash was investigated. The thesis study consists of three parts. These parts are; (I) the response surface Method (YYY), which provides maximum unconfined compressive strength to determine the optimum amount of fly ash and activator components, (ii) 3 mm to 12 mm and a length of fiber reinforcement reinforcement mortar geopolimer by the addition of different proportions of the maximum flexural strength and toughness parameters effects on the determination of the content of (iii) 3 mm and 12 mm in length, obtained by mixing different proportions of combinations of equipment Donti geopolimer ground-based mortars, the maximum bending stress, toughness, it consists of the stages of studying the effects on shear strength parameters. Within the scope of the study, soil identification experiments, free compressive strength, three-axis compressive strength, three-point bending experiments were performed. As a result of the study, it was found that the combinations of 3 mm and 12 mm long reinforcement gave a higher maximum bending strength and cohesion value compared to only 3 mm or only 12 mm long reinforcement. It was observed that the toughness value of the floors improved by using 12 mm long reinforcement was higher than that of 3 mm length and different reinforcement combinations.