Stabilization of Peat Soil Using Ordinary Portland Cement and Fiber Polypropylene

Peat soil normally occurs at surfaces that are basic parts of the wetland systems that found as extremely soft and unconsolidated deposits. The main problem of this soil has known cause by its high compressibility and low shear strength. Construction on peat soil has proven to be a challenging task to civil engineers because of its characteristics. Geotechnical risks and costs frequently accompanied to be higher when doing construction on soft soil likes peat. This study aims to determine the effectiveness the use of Ordinary Portland Cement (OPC) with fiber polypropylene to strengthen and stabilized the peat soil. It will be proved with the implementation of Unconfined Compressive Strength (UCS) test and curing time. Further, UCS test is used to reach mechanical properties of fine grained soil and fiber were used as it characteristic in prevent the formation of crack on loading and increasing the strength of the samples. This test will be done in different amount of OPC and curing time. For sample with OPC and without fiber, the amount of OPC used is 2%, 5% and 10%. However, for sample with OPC and fiber, the amount used is 2%, 3%, 4%, 5%, 6%, 7%, 8% and 10% together with 0.15% of fiber. All results from this sample will be compared with plain peat soil which is without any addictive. Apart from that, samples will go through curing process in air for 7 and 14 days before UCS test be done