Blue line = Max. Dry density line
Orange line = 100% saturation or Zero air voids line
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Compaction 1. Why do we compact soils to 90 or 95% Standard Proctor (.e. maximum dry...
A proctor test was performed on a soil that has a specific gravity of solids of 2.71. The following results were obtained: Water content Total Unit 1. Finish calculation and plot Weight (Ib/ftA3) compaction curve 10 13 16 2. What is the max. dry unit weight? 3. What is the optimum moisture 106 119 125 129 128 123 content? What range of moisture is permitted if a contractor must achieve 90% compaction? 4. 20 5. What volume of water must...
3. Modified Proctor compaction test results for a soil at a construction site indicated that the maximum dry density ya = 125 lb/ft at an optimum water content Wopt = 9.5%. Assuming specific gravity of the mineral solids G=2.65, calculate: (a) the void ratio at the maximum dry density (b) the degree of saturation Sat maximum dry density.
standard Proctor compaction test conducted on a clay sample gave the following results Weight of wet soil in the mould (g) | 1765 1860 1924 1947 1928 1906 Moisture content (%) 13.1 14.9 16.8 18.9 21.1 23.2 If the volume of the sample mould is 944 cm3, Determine the maximum dry density and optimum moisture content of the clay Draw on the same graph 5% voids ratio line. Sketch the dry density-moisture content curve you expect from modified Proctor compaction...
Two compaction tests, a standard Proctor test and a modified Proctor test, were performed on a particular soil. Label which curve corresponds to which test. Label the maximum dry density and optimum water content for the higher curve. Derive an expression for the Zero Air Voids (ZAV) line shown in the figure below. The form of the line should be ya - f(w,Gs) ZAV (S-100%) Yd
A series of Proctor compaction tests were performed on fill material used for a roadway application. The results are shown in the Table below.Data Point No.12345Mass of compacted soil + mould (kg)3.7623.9214.0344.0914.04Moisture content, w (%)4.57.510.112.916.4 The mass of the compaction mould was 2.031 kg. The mould volume was 1×10–3 m3.(a) Compute dry unit weight gd for each data point. (b) Draw the Proctor compaction curve of the soil, and determine the maximum dry unit weight gd max and optimum moisture content...
Compaction test Determine the degree of saturation and the air voids at maximum dry density. Discuss the reasons for the shape of the graph of dry density versus water content Determine the compaction energy of the standard Proctor test. Discuss what effect would have on the maximum dry density and optimum water content, and the degree of saturation and air voids at maximum dry density if modified Proctor compaction test is conducted. . mass of wet sample 106.49 98.45 105.37...
A compaction test was conducted in a soils laboratory, and the Standard Proctor compaction procedure (ASTM D 698) was used. The weight of a compacted soil specimen plus mold was determined to be 4200 g. The volume and weight of the mold were 1/30 ft and 2100 g, respectively. The water content of the specimen was 9.1%. The wet unit weight of the compacted specimen is ᎢbᎴ3 .
The following results were obtained from standard Proctor compaction tests. Test ID Mass of moist soil (kg) 1 1.633 Standard Proctor Test 2 . 1.841 1.907 1.822 1.756 Moisture Content Test 14 14 Mass of tin empty (g) Mass of tin + wet sample (g) Mass of tin + dry sample (g) 98 62 878280 (a) Calculate moisture content (w) and dry unit weight (ya) for standard Proctor compaction tests. Plot moisture content (w) vs. dry unit weight (yd). Given:...
For the data in Fig. 5.1: (a) Estimate the maximum dry density and optimum water content for both the standard curve and the modified Proctor curve. (b) What is the placement water content range for 90% relative compaction for the modified Proctor curve and 95% relative compaction for the standard Proctor curve? (c) For both curves, estimate the maximum placement water content for the minimum compactive effort to achieve the percent relative compaction in part (b) Reference: Figure 5.1 2.0...
3. Modified Proctor compaction test results for a soil at a construction site indicated that the maximum dry density Ya = 120 lb/A’ at an optimum water content wopt = 9.0%. Assuming specific gravity of the mineral solids Ga=2.67, calculate: (a) the void ratio at the maximum dry density (b) the degree of saturation S at maximum dry density.