The soil sample is being compacted. It has a Specific gravity of 2.70 Find the Following: a. Using the data below, Plot the Compaction curve (Use Excel). Show the solution in finding the Dry unit weight Water content (%) 4.2 5.1 7.8 10.1 12.2 Degree of Saturation, S (%) 19.8 28.9 60.1 69.8 74.6 b. Find the max dry unit weight and the optimum water content. Note: Show complete Solution. You can use Excel to find the curve but show the solution Topic: Soil Compaction Subject: Soil Mechanics

The soil sample is being compacted. It has a Specific gravity of 2.70 Find the Following: a. Using the data below, Plot the Compaction curve (Use Excel). Show the solution in finding the Dry unit weight Water content (%) 4.2 5.1 7.8 10.1 12.2 Degree of Saturation, S (%) 19.8 28.9 60.1 69.8 74.6 b. Find the max dry unit weight and the optimum water content. Note: Show complete Solution. You can use Excel to find the curve but show the solution Topic: Soil Compaction Subject: Soil Mechanics

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 6.7P

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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
A dry sand is placed in a container having a volume of 0.0089 cm³. The dry weight of the sample is [0.010+(0.001*A)] grams. 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 [0.0100+(0.001*B)+(0.0001*C)] grams. Determine: (Note: if your answer in any of the following is negative, continue solving anyway,) a) Moisture content b) Moist unit weight c) Dry unit weight Let A = 1 B = 6 C = 3
5. Following is the result of a modified proctor test. Determine the maximum dry unit weight, void ratio and saturation at optimum moisture content and energy of compaction. Make a tabulation of all your results. Volume of Mold (m³) Weight of Moise Soil in Mold (kN) OF Moisture Content 0.000945 10 0.000945 12 0.000945 14 0.000945 0.0177 16 0.000945 0.0173 18 0.000945 0.0166 20 COR
The field wt of soil sample is 1900 kg/m³and the unit wt of the soil particle is 2660 kg/m³. A. Compute the dry unit weight if the moisture content is 11.5%. B. Compute the void ratio. C. Compute the degree of saturation.
From the following data, solve for the degree of compaction. If this is for Item 201, Aggregate Base Course, will it pass the specification? Field density test data: Weight of material taken from hole, kg. = Weight of sand to fill hole, kg. = 5.585 3.935 Volume of hole, cu.m = Wet unit weight, kg/cu.m = Dry unit weight, kg/cu.m = 0.0028 1995 1734 Laboratory Data: Maximum dry density, kg/cu.m. = 1750 Optimum Moisture Content, % = 8.00
• Problem 4- A soil sample from a certain excavation has the following grain size characteristics; Sieve size (mm) 2.00 0.075 0.500 0.005 0.002 % Finer 100 80 64 35 20 The group index of the soil was 17 and has a plasticity index of 24. Determine the liquid limit of the soil. GI = (F-35) [0.2 +0.005(LL-40)] +0.01 (F-15) (P.I. - 10)
Q.1.A A soil specimen have void ratio (e) of 0.7, Gs 2.72. Calculate the total unit weight, dry unit weight, and water content at degree of saturation equals 75%. B. Classify the following soil using the USCS. Finer (%) 100 90 60 30 19 4 Sieve No. 4 No. 25 No. 50 No. 100 No. 200 12.5 mm (Diameter) (4.7 mm) (0.7 mm) (0.3 mm) (0.15 mm) (0.075 mm)
a .l zain IQ elearning7.uokufa.edu.iq CHAPTER SEVEN STERSSES WITHIN SOIL MASS Н.W The detailed results of a standard Proctor test on a soil classified as CL-ML and group name silty clay with sand are shown in the table below. Determine the maximum dry unit weight and optimum water content. Diameter of mould = 4 in. Height of mould 4.584 in. Volume of mould = 1/30 ft3. Weight of mould, M = 4.45 lb. Unit weight data Water content data Weight of wet soil and mold (Ibs) Mass of can and wet soil (grams) Mass of can and dry soil (grams) Mass of can (grams) M. M. M. 7.32 114.92 111.48 7,57 163.12 155.08 7.68 190.43 178.64 46.20 193.13 178.24 46.50 7.65 188.77 171.58 46.10 II
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.
Laboratory compaction test results on a clayey silt are given in the following table:- Moisture content (%) Dry unit w3eight (kNm³) 14.80 8 17.45 18.52 11 18.9 12 18.6 14 16.9 Following are the results of a field unit weight determination test on the same soil with the sand cone method:- • Calibrated dry density of Ottawa sand = 1667 kg/m³ • Calibrated mass of Ottawa sand to fill the cone = 0.117 kg • Mass of jar + cone + sand (before use) = 5.99 kg • Mass of jar + cone + sand (after use) = 2.81 kg • Mass of moist soil from hole = 3.331 kg • Moisture content of moist soil = 11.6% Determine a. Dry unit weight of compaction in the field
3. A dry sand is placed in a container 9 cm3. The dry weight of the sample is 15 g. Water is carefully added to the container so as not to disturbed the condition of the Sample. When the container is filled the combined weight of soil and water is 18 g. Determine the following: a) Void ratio of sample in the container b) Porosity c) Water constant d) Specific gravity of the soil particle e) Saturated unit weight f) Dry unit weight
Calculate the CEC (m.e./100g soil) using the following given miliequivalent weights obtained from a 25g soil sample (a. Ca++= 2.23 m.e; b. Mg++=1.32 m.e.; c. Na+= 1.98 m.e.; d. K+= 1.87 m.e.; e. H+= 1.27 m.e.; f. Al+++= 0.11 m.e.; g. NH4+= 2.3 m.e.; h. NO3-= 1.5 m.e.