You are given three soil samples. Soil sample 1 is silty sand. Soil sample 2 is clay. Soil sample 3 is silty clay. Q4. You are told to conduct the following triaxial tests on the samples: a slow test on sample 1, a rapid test on sample 2, and a 'quick' test on sample 3. What triaxial tests are you conducting on each sample? Provide the common test methods names (a)

You are given three soil samples. Soil sample 1 is silty sand. Soil sample 2 is clay. Soil sample 3 is silty clay. Q4. You are told to conduct the following triaxial tests on the samples: a slow test on sample 1, a rapid test on sample 2, and a 'quick' test on sample 3. What triaxial tests are you conducting on each sample? Provide the common test methods names (a)

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter17: Subsoil Exploration

Section: Chapter Questions

Problem 17.2P

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In a liquid limit test on a fine-grained soil, using the Casagrande apparatus, the following results were recorded: Test # 1 2 3 4 Number of blows 50 36 24 15 Container number J11 F12 C20 C2 Wet soil + container 90 92 91 91 Dry soil + container 79 82 83 87 Container mass 82.00 81.00 83.00 82.00 dry soil moisture loss Moisture content, w% If the plastic limit on the same soil was found to be 25%, determine the liquid limit and plasticity index of the soil.
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A Sample of soil was tested in the laboratory with the following results Liquid limit =30% Plastic limit =12% U.S. Sieve Size Percentage Passing 3/8 in. 100.0 No. 4 76.5 No. 10 60.0 No. 40 39.7 No. 200 15.2 Classify the soil sample by the USCS classification system.
A constant-head permeability test is performed in a laboratory where the soil sample is 25 cm in length and 6 cm2 in cross section. The height of water is maintained at 2 ft at the inflow end and 6 in. at the outlet end. The quantity of water flowing through the sample is 200 ml in 2 minutes. (a) Make a sketch of the described conditions. (b) What is the coefficient of permeability in millimeters per minute?
You measure a soil sample's pH using a testing strip. If the reading is 5.2, how would you classify the sample?
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A hydrometer test has the following result: Gs = 2.65, temperature of water = 26 C, and L = 10.4 cm at 45 minutes after the start of sedimentation (see Figure 2.25). What is the diameter D of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, t = 45 min)? Figure 2.25 ASTM 152H type of hydrometer placed inside the sedimentation cylinder (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida)