wo samples of the same soil is subjected to pH analysis using a pH meter, the first is analysed using 1:1 soil:water ratio and the other with 1:1 soil:KCl ratio, what would be the most probable result? a. Soil analysed using 1:1 soil:water ratio will register a lower pH compared to that of soil analysed using 1:1 soil:KCl ratio b. Soil analysed using 1:1 soil:water ratio will have the same pH with that of soil analysed using 1:1 soil:KCl ratio c. Soil analused using 1:1 soil:KCl ratio will register a higher pH compared to that of soil analysed using 1:1 soil water ratio

wo samples of the same soil is subjected to pH analysis using a pH meter, the first is analysed using 1:1 soil:water ratio and the other with 1:1 soil:KCl ratio, what would be the most probable result? a. Soil analysed using 1:1 soil:water ratio will register a lower pH compared to that of soil analysed using 1:1 soil:KCl ratio b. Soil analysed using 1:1 soil:water ratio will have the same pH with that of soil analysed using 1:1 soil:KCl ratio c. Soil analused using 1:1 soil:KCl ratio will register a higher pH compared to that of soil analysed using 1:1 soil water ratio

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter5: Classification Of Soil

Section: Chapter Questions

Problem 5.10P

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Two samples of the same soil is subjected to pH analysis using a pH meter, the first is analysed using 1:1 soil:water ratio and the other with 1:1 soil:KCl ratio, what would be the most probable result?* Soil analysed using 1:1 soil:KCl will register a lower pH compared to that of soil analysed using 1:1 soil:water ratio Soil analused using 1:1 soil:KCl ratio will register a higher pH compared to that of soil analysed using 1:1 soil water ratio Soil analysed using 1:1 soil:water ratio will have the same pH with that of soil analysed using 1:1 soil:KCl ratio Soil analysed using 1:1 soil:water ratio will register a lower pH compared to that of soil analysed using 1:1 soil:KCl ratio
An undisturbed soil sample was prepared for a triaxial testing. The cylindrical soil sample is 50 mm in diameter and 100 mm long. It has a mass of 360 g. After finding the mass of the entire sample, a small portion was removed and a moisture content test was performed on it. The result of the moisture content test is shown in Table 3(a). Given the specific gravity, G, is 2.70. (i) Compute the moisture content (%) of the soil sample. (ii) By using the soil phase diagram, determine the bulk density (kg/m³), dry density (kg/m³), void ratio, porosity (%) and degree of saturation (%) of the soil sample.
Atleast 3 laboratory apparatus for each of the following laboratory tests. 1. Determination of moisture content of soil 2. Determination of specific gravity of soil 3. Determination of liquid limit of soil 4. Grain size analysis of soil 5. Determination of plastic limit 6. Determination of shrinkage limit 7. Modified/Proctor compaction test 8. Constant permeability test 9. Falling head permeability test
Geotechnical laboratory tests were conducted to determine the liquid limit of soils. The data set shown in Table1 was obtained by using Casagrande's apparatus on Soil A (Plastic Limit = 32). The data set shown in Table 2was obtained by using Cone penetrometer on a different Soil B (Plastic Limit = 28).Table 1. Data from LL cup testing Table 2. Data from Cone penetrometer(a) Draw the Flow curve for soil A and B.(b) Calculate the Flow Index for both soils.(c) Calculate the Liquid limit for both soils.(d) Calculate the Plasticity and the Liquidity Indices for both soils, if both soils were found to havethe same current water content of 30%.(e) What can be said about the strengths of the soils in their current state?
A soil sample is analyzed via a sieve analysis and determined to have the following size distribution: 10% sand and 45% silt. a) Identify the soil texture (use the soil texture triangle) and provide its porosity, saturated hydraulic conductivity, and saturated matric head based on Tables 7.1 and 7.2. Based on those parameters calculate the field capacity and wilting point for the soil*. b) Make a plot of the matric head vs. volumetric soil moisture and of the hydraulic conductivity vs. volumetric soil moisture for this soil.
Refer to Problem 2.C.1. Results of the sieve analysis for Soils A, B, and C are given below. To obtain a more representative sample for further geotechnical testing, a ternary blend is created by uniformly mixing 8000 kg of each soil. Answer the following questions. a. If a sieve analysis is conducted on the mixture using the same set of sieves as shown above, compute the mass retained (as a percentage) and cumulative percent passing in each sieve. b. What would be the uniformity coefficient (Cu) and the coefficient of gradation (Cc) of the mixture?
Let us assume that a soil sample taken in the field is taken and it must be identified by the SUCS Method and AASHTO Method. Moisture content = 5.75% Limit liquid = 53.5 Plastic limit = 31.6 Granulometry Sieve % Pass No. 4 100 # 40 68 # 200 54.3 Do you select the best answer? a) Inorganic silt and sand, with low plasticity b) Inorganic clay with low plasticity c) Clay silt, traces of gravel, dark Brown
A balloon-type apparatus is used to determine an in-place unit weight for a soil (field density test). The volume of the test hole determined by reading the water level graduations on the apparatus cylinder before and after digging the test hole is 0.025 ft3. The wet weight of soil obtained from the test hole is 3.10 lb. The water content is determined to be 14 percent by drying a small sample on a field stove.(a) Determine the in-place dry unit weight of the tested soil.(b) Determine the percentage of compaction for the test result from part a if the soil is part of a compacted earth fill whose maximum unit weight (from laboratory compaction tests) is 118 pcf.
a. A constant head permeability test was performed on a 30 cm2 (cross sectional area) soil sample. The length of the samples was 10 cm, and a 15 cm head difference was applied during testing. If 20 cm3 of water was collected over 2 minutes, calculate the coefficient of permeability of the soil. b. In a falling head permeability test, the head fell from 62 to 35 cm in 4 minutes. The cross sectional area of the sample is 50 cm2 and the length was 9 cm. If the area of the stand pipe was 0.6 cm2 compute the coefficient of permeability of the soil.
The table shows the laboratory results of the sieve analysis of a sample. Plot the grain size curve of the soil. The soil has a liquid limit of 35% and plasticity index of 26%. SIEVE SIZE (mm) WEIGHT RETAINED 0.25 18.96 0.149 33.18 0.074 45.03 0.052 54.51 0.02 42.66 0.01 11.85 0.004 4.74 0.001 4.74 Pan 21.33 a.) Classify the soil using AASHTO method b.) Classify the soil using USCS method c.) Classify the soil using USDA method Please answer this asap. For upvote. Thank you in advance
A soil sample having a liquidity index of 0.85, a plasticity index of 16.50 and a plastic limit of 11.45. The soil sample has a specicfic gravity of 2.68 and a void ratio of 0.77. A. Compute the degree of saturation. B. Compute the air void ratio
An undisturbed soil sample is brought to the lab for analysis. The sample is cylinder that is 6 cm in diameter and 10.48 cm high. When first removed from the ground, the sample has a mass of 484.51 g. heating in an oven for 24 hours, the sample mass is 447.15 g. (a) Determine the bulk density, porosity, vaid ratio, volumetric moisture content and saturation of the original sample. State any assumptions. (b) Was this sample removed above or below the water table? Explain the basis for your answer.