Laju Pemampatan Tanah Gambut melalui Pengujian Konsolidasi Primer

Abstract

This paper discussed the primary consolidation test of very soft soil in several loading and unloading combination. The very soft soil such as peat is easily compressed and thick. The initial loading of soft soil has required the preloading, which is the first loading of the soil to increase the bearing capacity and reduce the settlement in the primary consolidation before permanent construction of civil buildings is carried out. Based on this condition, it is necessary to carry out a primary consolidation test using an oedometer to determine the rate of compression of the peat soil and consolidation occurs using the square root of time method. Testing of the peat soil compression rate is carried out as much as 6 times of loading and 2 times of unloading in based on dmaks and optimum moisture content (OMC) conditions. The result of this study found that the compression that occurs in peat soil is substantial at the beginning of loading, then the compression is smaller in stage during 6 times of loading, this shows that peat soil has a very high compression and compressibility rate at the beginning of loading at time t90 with the resulting curve linear.