PEAT SOIL IMPROVEMENT DESIGN ANALYSIS USING GEOGRID

Abstract: Peat soil is a mixture of organic fragments originating from vegetation that has chemically turned into fossils. Peat soil is included in a broader category of soil called organic soil, which is soil that has a significant organic content that affects the geotechnical properties of the soil. Peat is organic soil with a high organic content. Because of the soft nature of peat soil, reinforcement is carried out using Biaxial Geogrid. From the model research in the laboratory, the results showed that with the addition of the number of reinforcement layers and the effective depth distance of the layers, it would provide a greater BCR (Bearing Capacity Ratio) value. After testing the variation of reinforcement sizes 2B, 3B and 4B with a layer depth of d = 0.25B; d = 0.5B; and d = 1B with the number of layers 1 layer, 2 layers and 3 layers with 2 types of geogrid reinforcement, the combination that provided the highest bearing capacity value was the use of a variation of reinforcement size 4B with a layer depth of d = 1B with a number of layers 3 layers with Biaxial Geogrid reinforcement. The bearing capacity value is 13.6076 kPa with a BCR value of 3.704 or an increase of 270.370%.