Abstract:
The aim of this thesis is to study the engineering properties of wastes from the paper milled industry. This will be used for preliminary waste arrangement which causes the least differential settlement on landfill. Three types of wastes from paper milled industry, i.e., lime mud, dreg and power boiler ash, were used as the samples in this study. The engineering properties of the wastes, which are strength, permeability and deformation modulus, were obtained from the laboratory. Then, the properties were used in the analysis, using a computer program, so asa to determine the vertical settlement and differential settlement under several wastes disposal arrangement. Lime mud gains the maximum dry density of 13 kN/m3 at the optimum moisture content of 33%. There is no cohesion intercept, but there is the friction angle of 44.8 ํ. The Drained Young's Modulus of lime mud depends on sigma'vo followed E' = -0.0214(sigma'vo)2 + 37.202(sigma'vo) + 1011.8. The permeability of the lime mud is 1x10 -5 cm./sec. Dreg gains the maximum dry density of 11 kN/m3 at the optimum moisture content of 43%. The cohesion intercept of dreg is 15.3 kN/m2 and the friction angle is 43.7 ํ. The Drained Young's Modulus of dreg depends on sigma'vo followed E' = -0.014(sigma'vo)2 + 25.771(sigma'vo) + 707.05. The permeability of the dreg is 8x10 -6 cm./sec. Power boiler ash gains the maximuj dry density of 5.6 kN/m3 at the optimum moisture content of 83%. The cohesion intercept of power boiler ash is 16.8 kN/m2 and the friction angle is 42.2 ํ. The Drained Young's Modulus of dreg depends on sigma'vo followed E' = -0.0176(sigma'vo)2 + 19.201(sigma'vo) + 1176.7. The permeability of the power boiler ash is 6.5x10 -4 cm./sec. The result of the analysis for the vertical settlement indicates that the most proper way to arrange the wastes is to lay them in layer with the dreg, the lime mud, the power boiler ash sequentially.