Civil Engineering A sample of soil with LL of 72.8 was found to have a liquidity index of 1.21 and water content of 81.3. What are its plastic limit and plasticity index? Comment on the consistency of the soil. Your answer

Civil Engineering A sample of soil with LL of 72.8 was found to have a liquidity index of 1.21 and water content of 81.3. What are its plastic limit and plasticity index? Comment on the consistency of the soil. Your answer

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Soil Compaction Test

Soil compaction is the major area of geotechnical engineering. Soil is composed of multiple pores present on its surface, while the soil is mainly composed of gravel, sand, rocks, etc. The arrangement of these rocks and gravels is such that they build up voids (spaces) between them, which allows spaces for the roots of the plants and crops to spread and absorb the required amount of nutrients. Soil compaction is a major problem primarily caused by human activities, micro-organisms, and other multiple factors.

Question

Civil Engineering
A sample of soil with LL of 72.8 was found to have a
liquidity index of 1.21 and water content of 81.3.
What are its plastic limit and plasticity index?
Comment on the consistency of the soil.
Your answer

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8. The results of a standard compaction test on a soil sample from Glasgow are shown in the graph below. From the graph, determine the optimum moisture content (OMC), maximum dry density and air content at maximum dry density. Can this soil be compacted to 2.11 Mg/m³ at OMC? Why? 22 0% 2.1 5% 2 10% 1.9 1.8 1.7 1.6 1.5 1.4 1.3 - 1.2 8 9 10 11 12 13 14 15 16 17 18 19 moisture content [%] 20 dry denslty [Mg/m³]
Classify the soil by IS classification Given:- Liquid limit=22% Plasticity limit=19% Percentage passing through 4.75mm IS sieve=98.5% Percentage passing through 75 micron IS sieve=35% D60=0.22 D30=0.19 D10=0.16
Question 11 The results of the particle-size analysis of a soil are as follows: Percent passing the No. 10 sieve = 80 • Percent passing the No. 40 sieve = 40 Percent passing the No. 200 sieve = 20 %3D The liquid limit and plasticity index of the minus No. 40 fraction of the soil are 30 and 5, respectively. Classify the soil by the AASHTO system. A A-2-4 B А-2-6 C) A-3 D A-2-5
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(1)Determine the liquid limit. (2)Determine the plastic limit (3)Allot group symbols and give soil description by USCS.
QA:If the specific gravity of a soil 2.69 and dry unit weight 1.915 gm/cm2, the sample of this soil is dried from its state at plastic limit, the volume change is 25% of its own volume at plastic limit, Similarly, when the same sample is dried from its state of liquid limit, the volume change is 45% of its own volume at liquid limit. determine the plasticity index if the value of liquid limit = 35%. (Soil mechanic)
QA:If the specific gravity of a soil 2.69 and dry unit weight 1.915 gm/cm2, the sample of this soil is dried from its state at plastic limit, the volume change is 25% of its own volume at plastic limit, Similarly, when the same sample is dried from its state of liquid limit, the volume change is 45% of its own volume at liquid limit. determine the plasticity index if the value of liquid limit = 35%.
Discuss your results and compare your results with any published data. For the bulk density test, obtain the value of dry density. How does the values of (i) void ratio (ii) porosity influenced your results? How will these values differ if the soil is fully saturated, partially saturated or submerged? Support your assertions using relevant phase relationship equations. Whatwill happen to the values of particle density (specific gravity) obtained if the soil sample contain large quantities of peat or organic material? How will the results be used in specific practical conditions in the construction industry? Explain any source(s) of error in your experiment and state how it affected your result.
Question 5 The results of the particle-size analysis of a soil are as follows: Percent passing the No. 10 sieve = 100 %3D Percent passing the No. 40 sieve = 80 • Percent passing the No. 200 sieve = 38 The liquid limit and plasticity index of the minus No. 40 fraction of the soil are 40 and 15, respectively. Compute the group index. A) 1.75 1.0 2.5 2.0
Define Shrinkage Index, also calculate Consistency Index if the liquid limit, natural water content and plasticity index of a soil mass are 30%, 15%, 3