A dry sand is placed in a container having a volume of 0.30cu.ft. The dry weight of sample is 31lb. Water is carefully added to the container so as not to disturb the condition of the sand. When the container is filled, the combined weight of soil llus water is 38.2 lb. a. Compute the void ratio in the container. b. Compute the specific gravity of the soil particle. c. Determine the dry unit weight

A dry sand is placed in a container having a volume of 0.30cu.ft. The dry weight of sample is 31lb. Water is carefully added to the container so as not to disturb the condition of the sand. When the container is filled, the combined weight of soil llus water is 38.2 lb. a. Compute the void ratio in the container. b. Compute the specific gravity of the soil particle. c. Determine the dry unit weight

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter6: Soil Compaction

Section: Chapter Questions

Problem 6.15P

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A dry sand is placed in a container having a volume of 0.30 ft3. The dry weight of the sample is 31 lb. Water is carefully added to the container so as not to disturb the condition of the sand. When the container is filled, the combined weight of soil plus water is 38.2 lb. From these data, compute the void ratio of the soil in the container and the specific gravity of the soil particles. Also, determine the wet and dry unit weights, in kN/m3 and pcf.
The wet weight of a soil specimen is 207 g. The dried weight of the specimen is 163 g. If the volume of the specimen is measured before drying is 110 cubic centimeter, determine the Void ratio if specific gravity of solids is 2.68.
A sand fill has an initial void ratio of 0.740, it was then compacted to achieve a desirable void ratio of 0.400. If the specific gravity of the soil solids is 2.700 and the maximum and minimum dry density of the sand fill recorded from the laboratory are 1903.360 kg/m3 and 1365.640 kg/m3 respectively, determine the following: compacted thickness of the sand fill in meters if its initial thickness is 3.20 meters, increase in relative density of the sand fill
A sample of saturated clay was placed in a container and weighed. The weight was 6N. The clay in its container was placed in an oven for 24 hours at 105˚C. The weight reduced to a constant value of 5N. The weight of the container is 1N. If Gs = 2.7, determine: a) Water Content b) Void Ratio c) Bulk Unit Weight d) Dry Unit Weight e) Effective Unit Weight
A sample of soil in natural state having volume of 0.00934 cu.m weighs 18.11kg. The sample is allowed to dry in an oven and weight was reduced to 15.67 kg. The specific gravity of solid was found to be 2.67. Determine the following: (a.) Moist unit weight of soil and dry unit weight of soil (b.) Void ratio and porosity (c.) Moisture content and Degree of saturation Show your solutions
A dry sand is placed in a containerhaving a volume of 0.0089 cm3. The dry weight of the sample is 0.011 grams. Water is carefully added to the container so as not to be disturbthe condition of the sand. When the container is filled, the combined weight of the of soil plus water is 0.0144 grams. With this, find the moisture content, moist unit weight, dry unit wait, void ratio, the porosity, and degree of saturation. for a saturated soil show that; ????=(?/?)(1+?/1+?)??
A dry sand is placed in a container having a volume of 1⁄4 ft3. The dry soil weight is 27 lb. If the specific gravity of soil solids is 2.75, determine the void ratio of the sand in the container. Also, calculate the dry unit weight in kN/m3 and pcf.
The volume and weight of a partially saturated clay sample are 185 cm3 and 362 g respectively. After drying in an oven its weight reduced to 326 g. If the natural void ratio of the soil was 0.54, determine the specific gravity of the solid.ANSWER: 2.71
In a constant head test, the sample of sand was collected 150 cm3 of water in just two minutes. The diameter is 5.08 centimeters, the length was 10 centimeters, and the head was maintained at 20 cm. 1) Determine the coefficient of permeability (Ans. 3.08 x 10-2 cm/s) 2) Determine the kind of soil (Ans. Coarse Sand) 3) Determine the interstitial velocity if n=0.3 (Ans. 0.21 cm/s)
A modified Proctor compaction test was carried out using a cylindrical moldwith a 1000 ml volume. Table 2 summarizes the results. a. Plot the compaction and ZAV curves (RD=2.75 and ρwater=1000 kg/m3)b. Determine the maximum dry density and the optimum moisture content Table 2 Moisture Content (%)Mass of WetSample (g)10.5 2033.211.8 2146.613.0 2203.514.9 2183.116.4 2147.617.6 2116.8
The laboratory compaction test of a certain type of soil gives a maximum dry density of 1486 g/m3 with an optimum moisture content of 12.5%. The following are the results of a field unit weight determination test using sand cone method. Volume of soil excavated from the hole = 0.001337 m3 Weight of soil from the hole when wet = 2220 g Weight of soil from the hole when dried = 1890 g Determine the field unit weight of soil in g/cm3. Determine the relative compaction, then tell whether it is within the allowable range for relative compaction of 95 ± 0.20?
A sample of soil weighing 2.62 KN is removed from a test pit. 1.33 KN of water will just fill the pit. A sample of the soil weighing 112.4 grams is dried in the oven and its weight after drying is 103.6 grams. Assume the specific gravity of the solids is 2.67. Max. attainable unit weight of the soil is 18.47 KN/cu.m and minimum attainable unit weight is 16.35 KN/cu.m.a) Determine the wet unit weight of soilb) Determine the dry unit weight of soilc) Determine the relative density of the soil