#TITLE_ALTERNATIVE#

• Main Author: Farni (NIM : 25093010), Indra
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/8223
• Institution: Institut Teknologi Bandung

<br /> <br /> <br /> <br /> <br /> Abstract: <br /> <br /> <br /> <br /> <br /> Problems which are oftenly encountered in designing roads and structure foundations are related to bad soils. Peat soils are one of in these kind of soils. Limited information on the technical and physical characteristics of the soils causes failures in many projects. The main factors that may cause problems when constructing structures on peat soils are : <br /> <br /> <br /> <br /> <br /> -Limited information on the behaviour of peat soils, particularly which are found in Sumatera island, Kalimantan, and Irian Jaya. <br /> <br /> <br /> <br /> <br /> -Lack of knowledge on the theories and their applications in predicting the compressibility and strength of peat soils in the field. <br /> <br /> <br /> <br /> <br /> Limited information on the method of improving peat soils for foundation of construction. <br /> <br /> <br /> <br /> <br /> In order to know the physical properties of peat soils a continous research on the compressibility and bearing capacity after pre-loading is conducted. To study their one dimension cosolidation behaviour peat soils are tested in the laboratory using Rowe Consolidometer with loading simulation, loading period, and pre-loading. Bearing capacity of the peat soils after primary consolidation will be tested using unconfined compression and triaxial apparatus. Using the result of laboratory tests on peat soils it is hope that problems on design and construction in the job site can be solved, particularly geotechnical problems. Results of pre-loading tests on Jambi peat soils show that the compressive and shear stresses increase with increasing the pre-loading. At the pre-loading of 50 kPa the internal angle of friction ranges from 2.2 degree to 4.6 degree, and the cohesion renges from 16 kPa to 28 kPa. At the pre-loading of 100 kPa the internal angle of friction ranges from 0.9 degree to 7.7 degree, and the cohesion ranges from 22 kPa to 55 kPa. The higher the degree of saturation level of the soils the lower the internal angle of friction and the higher the cohesion following the increment of pre-loading. The compression index at 50 kPa pre-loading is ranging from 2.59 to 4.46, and at pre-loading of 100 kPa the compression index is ranging from 1.48 to 2.23. According to the compression behaviour shown in the curve the increasing of load increment period should be applied.