Table Q2: Result of Standard Proctor TestMass of wet soil in the moldMoisture content(kg)(%)1.689.91.7110.61.7712.11.8313.81.8615.11.8817.41.8719.41.8521.2 (b) A soil sample was taken from a site of a proposed borrow pits and sent to the UTHMlaboratory for a Standard Proctor test. Given the volume of proctor mold is 943.3cm³and the results of the test are as recorded in Table Q2.(i) From the data given, examine the appropriate method of analysis to determinethe compaction parameter. Discuss the moisture range permitted from yourinvestigation, if contractor must achieve 95% relative compaction.(ii) A field density test for the soil describe in Q2 obtained the moisture content10.5% and moist density 1705kg/m³. Determine the relative compaction

Weight Moisture content Unit weight Dry Unit weight 1.68 9.9 1780.98166 1620.547461 1.71 10.6…

Answered: Table Q2: Result of Standard Proctor…

Table Q2: Result of Standard Proctor Test Mass of wet soil in the mold (kg) Moisture content (%) 1.68 9.9 1.71 10.6 1.77 12.1 1.83 13.8 1.86 15.1 1.88 17.4 1.87 19.4 1.85 21.2

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter4: Plasticity And Structure Of Soil

Section: Chapter Questions

Problem 4.5P: The following data were obtained by conducting liquid limit and plastic limit tests on a soil...

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A compaction test was conducted in a soils laboratory using the Standard Proctor Method B test procedure. The weight of the compact soil specimen plus mold and baseplate was determined to be 3841 g. The volume and mass of the mold were 943.7 cm³ and 2066.0 g, respectively. A moisture content test was carried out on a representative portion of the sample and the results were 9.8%. Required Determine the dry unit weight in metric units, to the nearest 100th. Your Answer:
A compaction test was conducted in a soils laboratory using the Standard Proctor Method B test procedure. The weight of the compact soil specimen plus mold and baseplate was determined to be 3889 g. The volume and mass of the mold were 943.8 cm³ and 2067.0 g, respectively. A moisture content test was carried out on a representative portion of the sample and the results were 10.4%. Required Determine the (wet) unit weight in metric units, to the nearest 100th. Your Answer:
A soil sample was taken from a proposed cut area in a highway construction project and sent to a soils laboratory for a compaction test, using the Standard Proctor compaction procedure. Results of the test are as follows: Maximum dry unit weight = 112.6 lb/ft3 %3D Optimum moisture content = 15.5% The contractor, during construction of the soil em-bankment, achieved the following: Dry unit weight reached by field compaction = 107.1 Ib/ft3 Actual water content 16.0% %3D Determine the percent compaction achieved by the contractor.
The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.
Table Q2(b)(i) shows the proctor compaction test results of bulk density andpercentage of water content conducted in geotechnic laboratory. The test isperformed on a subgrade soil sample with the specific gravity of solid is2.75. Based on the statement; (i) With the plot of graph, compute the maximum dry density andoptimum moisture content.
A field density test has been conducted in a compacted fill that is currently under construction.The test results indicate a relative compaction of 101-103%, which made the constructionmanager believe the test must be incorrect. He believes it is impossible for the dry unit weightinthe field to be greater than the maximum dry unit weight from the Proctor compaction test.Explain why the relative compaction in the field could indeedbe greater than 100%.
A compaction test was conducted and standard Proctor compaction procedure was used. The weight of a compacted soil specimen plus mold was determined to be 3815g. The volume and weight of the mold were 1/30 ft3 and 2050g, respectively. The water content of the specimen was 9.1%. Compute both the wet and dry unit weights of the compacted specimen. Answers in lb/ft3.
A soil sample was taken from a proposed embankment that is to be used as compacted fill for a building foundation. The sample was sent to a soil laboratory for a compaction test. Standard Proctor Method B was performed and the results showed maximum dry unit weight of 19.45 kN/m³ and optimum moisture content is 12.6%. During placement, the contractor had a field compaction test performed and the field test results were in-place dry unit weight of 18.65 kN/m3 and moisture content 11.6%. Required Determine the percent compaction achieved by the contractor, the the nearest 10th of a percent.
A compacted fill with a unit weight of 121 lb/ft^3 and a moisture content of 12.5% will be used for construction of a warehouse. Proctor compaction test was performed on a sample of the fill material. The test results revealed a maximum dry unit weight of 117 lb/ft^3 and an optimum moisture content of 13.0%. Compute the relative compaction based on the results of the Proctor compaction test.
(b) Table Q2(b)(i) shows the proctor compaction test results of bulk density andpercentage of water content conducted in geotechnic laboratory. The test isperformed on a subgrade soil sample with the specific gravity of solid is2.75. Based on the statement;(i) With the plot of graph, compute the maximum dry density andoptimum moisture content.(ii) Compute the range percentage of moisture content needed to achieve95% of relative compaction effort. (iii) Based on the answer in Q2(b)(ii), explain how the density of soil canbe improve if the compaction effort not achieve to 95%.
4. Phase Diagram A soil sample was obtained at the underground parking garage that Dr. Barry is constructing at his home with a volume (VT) of 0.05 ft', total weight (WT) of 4.2 lbs, weight of water (Ww) of 0.37 lbs and a specific gravity (Gs) 2.70. Draw a complete phase diagram and determine the void ratio (e), moist unit weight (y), saturated unit weight (ysat), dry unit weight (Yary), weight of the solids (W.), volume occupied by the solids (V.), volume occupied by the water (V), volume occupied by the air (VA). volume of the voids (Vv), porosity (n), moisture content (w), and percent saturation (S). Use English units in your solution. Show all of your work.
A hydrometer test was conducted on the material passing sieve No, 200 and the results are listed in the table below, The results of sieve analysis on the soil showed that the percentage passing No. 4 was 90 % and that passing No. 200 was 20 %. Estimate the clay size fraction in the soil. Table : Results of hydrometer test diameter (mm) 0.0700 0.0400 0.0150 0.0020 % finer (combined) 19 finer 95 80 16 65 13 45 0.0010 30 6 Select one: