Mechanical properties of jet grouting for two different soil types and different pressures

Jetgrout method, which is among the soil improvement methods widely used in our country, is one of the most preferred methods. This thesis has been compared with different literature studies by examining the mechanical properties of jet injection on two different soils and at different pressures using the jetgrout method. While this comparison was made, studies were conducted on the jet injection application directly in the field and in the factory construction site in the 5th organized region of Gaziantep. During the jet grout application, a total of three types of bar pressure were used. There are;  300 bar  350 bar  400 bar It has been applied to three different types of soil. There are;  Clayey soil  Sandy soil  Wetsandy soil Clayand sand samples were taken from the area where the experiments were carriedout, and plastic limit, liquid limit test and sieve Analysis were performed on these samples. Thus, it was aimed to reach realistic results in comparison of the materials used in the experiment with other experiments. In the experiments, a total of seven jet grout columns were made. A total of three, 300 bar, 350 bar and 400 bar, were applied to the clayey soil. A total of two, 350 bar and 400 bar, applied in Sandy ground. Two applications, 350 bar and 400 bar, were applied on wet sand ground. After the jet grout columns were completed, cores were taken from the column sand pressure tests were performed on these columns. As a result of these tests, it was observed that the diameter of the columns made on clayey soil was smaller than the diameterof made in wet and dry sandy soils. No significant difference was observed between the diameter of the column applied on wet sandy soil and the column applied on dry sandy soil. Interms of compressive strength, it has been observed that columns applied on clay soil show lower compressive strength than column sapplied on dry Sandy soil and wet sandy soil. Keywords: Jet grout, sand, clay, strength, pressure, diameter