1. A sample of clay was coated with paraffin wax and its mass, including the mass of wax was found to be 697.5 grams. The sample was immersed in water and the volume of water displaced was found to be 355 ml. The mass of the sample without wax was 690.0 grams, and the water content of the representative specimen was 18%. Determine the bulk density, dry density, void ratio and the degree of saturation. The specific gravity of the solids was 2.70 and that of wax was 0.89.
Ans - 2 gm/cc, 1.70 gm/cc, 0.59, 82.37%
2. A pycnometer having a mass of 600 grams was used in the following measurements of three samples of soil. Sample no. 1 was oven dried; sample no. 2 was partially saturated and sample no. 3 was fully saturated. The bulk density of the sample no. 2 was 2.05 gm/ml.
Sample No. 1 No.2 No.3
Mass of samples (gm) 960 970 1000
Mass of sample + pycnometer (gm) 2080 2050 2010
If the mass of pycnometer when filled with water only was 1475 gm, determine the specific gravity of solids. Also determine the water content and void ratio of samples no. 2 and 3, and the degree of saturation of sample no. 2.
Sample No. 1 No.2 No.3
Mass of samples (gm) 960 970 1000
Mass of sample + pycnometer (gm) 2080 2050 2010
If the mass of pycnometer when filled with water only was 1475 gm, determine the specific gravity of solids. Also determine the water content and void ratio of samples no. 2 and 3, and the degree of saturation of sample no. 2.
Ans - 2.70, 6.2%, 0.40, 17.7%, 0.48, 42%