흙의 최대건조밀도(最大乾燥密度) 및 최적함수비(最適含水比)와 자연함수비(自然含水比)의 상관성(相關性)에 대(對)하여 -동부(東部), 남부지방(南部地方)을 중심(中心)으로- = Relation Bettween the Maximum Dry Density and Optimum Moisture Content and Natural Moisture Content of Soils

다국어 초록 (Multilingual Abstract)

Maximum density and optimum moisture content of a soil may be one of the very important properties to be specified in the design of earth structures and their works. However, the determination of these soil properties may not be done without the necessary equipment and time-consuming field tests. This study was conducted to develop an easier method by determing the relations between the natural moisture content and optimum moisture content and between maximum density and optimum moisture content so determined. These velations are remarkably defferent according to the areas where the samples were taken, and thus analysis of the experimental results are shown by regions as follows:
Eastern Districs:{r_dmax=1/(0.0090W_opt+0.417)
(δ=±0.042, r =0.92)
W_opt=0.251W_N+8.5
(δ = ±2.41%, r =0.87) }
Southern Districts: {r_dmax=1/(0.0088W_opt+0.412)
(δ= ±0.083, r =0.89)
W_opt=0.332W_N+8.42
(δ=±3.41%, r =0.84)}
Central Districtsl: {r_dmax=1/(0.0112W_opt+0.383)
(δ=±0.052, r =0.97)
W_opt=0.758W_N+2.606
(δ= ±4.72%, r =0.79)}
(δ:Standard Deviation, r:Correlation Coefficient)