Use the obtained (Described in the Table below) from the laboratory and site effort for subgrad compaction layers to determine thedegree of compaction by conducting sand replacement test: Table: Result of sand replacement test 1.262 Bulk density of sand ,gm/cm Weight of wet soil sample from the hole, gm. Water Content in the field % 3724 7.5

Use the obtained (Described in the Table below) from the laboratory and site effort for subgrad compaction layers to determine thedegree of compaction by conducting sand replacement test: Table: Result of sand replacement test 1.262 Bulk density of sand ,gm/cm Weight of wet soil sample from the hole, gm. Water Content in the field % 3724 7.5

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter2: Origin Of Soil And Grain Size

Section: Chapter Questions

Problem 2.10P: Repeat Problem 2.8 using the following data. 2.8 The following are the results of a sieve and...

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Since laboratory or field experiments are generally expensive and time consuming, geotechnical engineers often have to rely on empirical relationships to predict design parameters. Section 6.6 presents such relationships for predicting optimum moisture content and maximum dry unit weight. Let us use some of these equations and compare our results with known experimental data. The following table presents the results from laboratory compaction tests conducted on a wide range of fine-grained soils using various compactive efforts (E). Based on the soil data given in the table, determine the optimum moisture content and maximum dry unit weight using the empirical relationships presented in Section 6.6. a. Use the Osman et al. (2008) method [Eqs. (6.15) through (6.18)]. b. Use the Gurtug and Sridharan (2004) method [Eqs. (6.13) and (6.14)]. c. Use the Matteo et al. (2009) method [Eqs. (6.19) and (6.20)]. d. Plot the calculated wopt against the experimental wopt, and the calculated d(max) with the experimental d(max). Draw a 45 line of equality on each plot. e. Comment on the predictive capabilities of various methods. What can you say about the inherent nature of empirical models?
Repeat Problem 2.8 using the following data. 2.8 The following are the results of a sieve and hydrometer analysis. a. Draw the grain-size distribution curve. b. Determine the percentages of gravel, sand, silt and clay according to the MIT system. c. Repeat Part b according to the USDA system. d. Repeat Part b according to the AASHTO system.
Need complete solution. Need fast! The maximum and minimum dry densities of a sand were determined in the laboratory to be 1509 kg/m3 and 1673 kg/m3, respectively. In the field, if the relative density of compaction of the same sand is 86.83%, what is the relative compaction (in percent)? Round off to two decimal places.
1. Why Stokes Law only applies if the grain diameter is between 0.0002 mmup to 0.2mm?2. How to get the corrected meniscus value?3. In the sieve analysis practicum, why should the soil from the hydrometer experiment be filtered?first with filter no. 200 ASTM?
A sand-cone in place unit test was conducted on the field during the construction of a proposed embankment. The following data were obtained. moisture content=12.8% weight of sand to fill the funnel=320 g weight of wet soil from test hole=750 g unit weight of sand=15.4 kN/m3 weight of sand used to fill test hole and funnel of sand-cone device=870 g a) compute the wet unit weight of soil (Ans. 21.14 kN/m3) b) compute the dry unit weight of the compacted soil (Ans. 18.74 kN/m3) c) compute the relative compaction in the field if the maximum dry unit weight of the soil is 21.3 kN/m3. (Ans. 87.98%)
Explain in detail Maximum Dry Density and Optimum Moisture Content of soil? Explain in 5 sentences how you are going to interpret the results of Proctor’s Compaction test?
Situation 4 - Three samples of loose sand were tested under consolidated undrained (CU) conditions. Test results are given below:Undrained angle of friction = 35°Deviator Stress = 260 kPaPore Water Pressure = 30 kPaDetermine the drained angle of inclination of failure plane in degrees. Round off to three decimal places.
15. The following are results of a field unit weight determination test using sand cone method: Volume of hole = 0.0018 m3 Mass of moist soil from hole = 3.44 kg Water content = 12.30% Max. dry unit weight from a laboratory compaction test = 19.94 kN/m3 Determine the relative compaction, in percent. Round off to two decimal places. Hint: Relative compaction = Field dry unit weight / Max dry unit weight (lab)
A sand cone in place unit test was conducted on the field during the construction of the embanklment in CALAX. The following data were obtained in the field: Moisture content of soil from the test hole+ 12.8% ; Weight of sand to fill the funnel(cone) = 320g; Weight of weight soil from the test hole= 750g; Unit weight of sand= 15.4 kN/m3 and Weight of sand used to fill the test hole and thefunnel of sand-cone device=870 g. Compute for the relative compaction (in percent) in the field if the maximum dry unit weight of the soil is 21.30 kN/m3. a. 94 b. 90 c. 88 d. 92
A sand cone in place unit test was conducted on the field during the construction of the embanklment in CALAX. The following data were obtained in the field: Moisture content of soil from the test hole+ 12.8% ; Weight of sand to fill the funnel(cone) = 320g; Weight of weight soil from the test hole= 750g; Unit weight of sand= 15.4 kN/m3 and Weight of sand used to fill the test hole and thefunnel of sand-cone device=870 g. Compute for the relative compaction (in percent) in the field if the maximum dry unit weight of the soil is 21.30 kN/m3.
A sand cone in place unit test was conducted on the field during the construction of the embanklment in CALAX. The following data were obtained in the field: Moisture content of soil from the test hole+ 12.8% ; Weight of sand to fill the funnel(cone) = 320g; Weight of weight soil from the test hole= 750g; Unit weight of sand= 15.4 kN/m3 and Weight of sand used to fill the test hole and thefunnel of sand-cone device=870 g. Compute for the relative compaction (in percent) in the field if the maximum dry unit weight of the soil is 21.30 kN/m3. a.94 b.88 c.92 d.90 With FBD if necessary
Situation 4 - Three samples of loose sand were tested under consolidated undrained (CU) conditions. Test results are given below:Undrained angle of friction = 35°Deviator Stress = 260 kPaPore Water Pressure = 30 kPaDetermine the drained angle of friction in degrees. Round off to three decimal places.