Question One: Explain based on engineering feature briefly for the followings:a)What are the tests that are carricd out on the subgrade?b)Explain the types of nggregate specific gravities used in association withpavements? Which one has more value?)Write down the importance of: Proctor Compaction Test and CBR Test.d)What's the reason of applying surcharge weight above the sample of the soil inCBR test before performs the test?e)What does "degree of compaction" mean?

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Question One: Explain based on engineering feature briefly for the followings: n)What are the tests that are carried out on the subgrade? b)Explain the types of aggregate specific gravities used in association with pavements? Which one has more value? c)Write down the importance of: Proctor Compaction Test and CBR Test. d)What's the reason of applying surcharge weight above the sample of the soil in CBR test before performs the test? e)What does "degree of compaction" mean?

Question One: Explain based on engineering feature briefly for the followings: n)What are the tests that are carried out on the subgrade? b)Explain the types of aggregate specific gravities used in association with pavements? Which one has more value? c)Write down the importance of: Proctor Compaction Test and CBR Test. d)What's the reason of applying surcharge weight above the sample of the soil in CBR test before performs the test? e)What does "degree of compaction" mean?

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 2.5P: Repeat Problem 2.4 with the following data. 2.4 The following are the results of a sieve analysis....

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1) a) Derive the formula for falling head permeameter ( state all assumptions). for what type of soil will you recommend the test? b) what is the difference between pump test and laboratory test for permeability measurement. 2 a) What are the parameters that control compaction of soil. b) what is the difference between lab compaction and field compaction.
|Laboratory testing was performed on two soil samples (A and B). (a) Determine the USCS classification symbol for Sample A. (b) Determine the AASHTO classification for Sample B. Sieve No. Sieve Opening (mm) A- Percent Passing B - Percent Passing 3 inch 76.2 100 1.5 inch 38.1 98 0.75 inch 19.1 96 4 4.75 77 100 10 2.00 96 20 0.85 55 94 40 0.425 73 100 0.15 30 200 0.075 18 55 Liquid Limit 32 52 Plastic Limit 25 32 A Silty Clay (CL) sample was extruded from a 6-inch long tube with a diameter of 2.83 inches and weighed 1.71 lbs. (a) Calculate the wet density of the CL sample. (b) A small piece of the CL sample had a wet weight of 140.9 grams and a weight of 85.2 grams after drying. Compute the water content. (c) Compute the dry density of the CL sample A Standard Proctor test was performed on a soil with a specific gravity of 2.71. For the water content and wet soil unit weight in the following table: a) Plot the moisture-dry unit weight curve b) Find the maximum dry density and optimum…
In soil compaction test, if a test result exceeds 100%, should engineers accept the result?
- Once answered correctly will UPVOTE!!
1. The following results were obtained from particle size distribution analysis of three soils - A, B and C. Sieve # 1/2 in 3/8 in #4 # 10 #40 #100 #200 Diameter (mm) 12.5 9.5 4.75 2 0.425 0.15 0.075 0.02 0.003 0.001 WL (or LL, liquid limit) wp (or PL, plastic limit) w (natural water content) Soil A 100 96 89 82 67 57 47 28 8 Percent passing Soil B 3 25 16 11 100 98 82 33 12 5 5 Soil C 100 99 97 85 55 43 51 19 26.5 Required: (1) Plot the particle size distribution curves (semi-log). Determine the following quantities of each soil: the effective particle size dio, the mean particle side d50, the coefficients of uniformity and curvature (if possible). (2) According to the particle size distribution, when the engineering properties are concerned, which soil is the most sensitive to water and which soil is mostly affected by density? Give you logic. (3) Classify the soils according to the USCS.
(b) A soil sample was collected in Alor Gajah, Melaka which is denoted as sample NSR has been sieved for design purposes and the results are shown in Figure Q1(a). (i) Analyse the soil sample groups accordance to the appropriate classification and standard used.
Please show computations, graph and solution thank you
highway engineering laboratory test CBR (California Bearing Ratio) 1- Does this test simulate the field conditions? If not, what are the points of dissimilarity? List them. 2- The reason for applying surcharge weights above the sample of the soil before testing? 3- The reason for mixing the dry soil with water before testing? and How can that affect the value of CBR?
Q2 Please provide justified answer asap to get a upvote
complete solutions with particle size distribution thank you
(1)Determine the liquid limit. (2)Determine the plastic limit (3)Allot group symbols and give soil description by USCS.
Explain based om engineering feature briefly for thc followings: d in association_with pavamente ve e as more value? gwne vown the importance or. Compaction Tea d)What's the reason of applying surcharge weight above the sample of the soil in CBR test before performs the test? e)What does "degree of compaction" mean?