Note : Answer only four questionsQ1 - A) Field density test performed on granular soil has given the following results ;Pfield = 1.81 g/cm³ ,W% = 12.7, G; = 2.65 , emax= 0.81 and pmax=1.9 g/cm³. Compute therelative density (compaction percentage ).-B) prove the following: 1) paGsPw1+814hat the

Answered: Image /qna-images/answer/20591915-b62a-4efe-a7e9-fba93a506fdc.jpg

Note : Answer only four questions Q1 - A) Field density test performed on granular soil has given the following results ; Pfield = 1.81 g/cm',W% = 12.7, G = 2.65 , emax=0.81 and pmax=1.9 g/cm'. Compute the relative density (compaction percentage ). -B) prove the following: 1) pa %3D Gs Pw 1+e %3D the

Note : Answer only four questions Q1 - A) Field density test performed on granular soil has given the following results ; Pfield = 1.81 g/cm',W% = 12.7, G = 2.65 , emax=0.81 and pmax=1.9 g/cm'. Compute the relative density (compaction percentage ). -B) prove the following: 1) pa %3D Gs Pw 1+e %3D the

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter6: Soil Compaction

Section: Chapter Questions

Problem 6.12P

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Similar questions

The following results are obtained from standard compaction test for a soil, if Gs = 2.5 Water Content (%) 6.2 8.1 9.8 11.5 12.3 13.2 Unit weight (kN/m3) 16.9 18.7 19.5 20.5 20.4 20.1 Required: 1- The optimum water content (Wc %) 2- The maximum dry unit weight ( dry ) 3- The void ratio (e) 4- Degree of saturation (S %) 5- Find the weight of water needed to be added to 1 m3 to reach 100% saturation.
For a granular soil, the following are given:●● Gs = 2.6●● Liquid limit on the fraction passing No. 40 sieve 5 20●● Percent retained on No. 4 sieve 5 20 Using Eqs. (5.4) and (5.5) attached , estimate the maximum dry density of compaction and the optimum moisture content based on the modified Proctor test.
1. Draw the compaction curve using the following given data from a standard Proctor test. 2. From the compaction curve you drawn, determine the Optimum Moisture Content and the Maximum Dry Unit Weight.
How does the dry unit weight, differ from the unit weight ? Why is the Proctor method of assessing soil compaction based on the dry unit weight and not the unit weight?
The results of a standard Proctor test are given in the following table. Determine the maximum dry unit weight of compaction and the optimum moisture content. Also determine the moisture content required to achieve 90% of ꙋd (max).
Determine the compaction effort of Standard Proctor Test in English unit Method A. (ft − lb/ft^3)
highway engineering laboratory test CBR (California Bearing Ratio) 1- How can we get a relative compaction RC > 100?2-.How can we improve the soil?
The relative compaction of a sand in the field is 94%. The maximum and minimum dry unit weights of the sand are 18.60 KN/m³and 15.10 KN/m³respectively. For the field condition determine 25) Dry Unit weight? a) 15.25 KN/m³ b) 20.50 KN/m³ c) 17.48 KN/m³ d) 18.90 KN/m³ Relative density of compaction? a) 69.80 % b) 99.20 % c) 72.40 % d) 73.05 % Moist unit weight at a moisture content of 8 % ? a) 19.77 KN/m³ b) 17.66 KN/m³ c) 18.88 KN/m³ d) 18.05 KN/m³
Standard proctor compaction test results on a sandy clay (35% sand, 55% clay, and 10% silt), taken from a borrow pit, are given in the following table. The sandy clay in the borrow pit has a porosity of 65% and a water content of 5.2%. A highway embankment is to be constructed using this soil. (a) Specify the compaction (dry unit weight and water content) to be achieved in the field. Justify your specification. (b) How many cubic meters of borrow pit soil are needed for 1 cubic meter of highway fill? (c) How much water per unit volume is required to meet the specification? (d) How many truckloads of soil will be required for a 100,000 m3 highway embankment? Each truck has a load capacity of 22.5 m3 and regulations required a maximum load capacity of 90%. (e) Determine the cost for 100,000 m3 of compacted soil based on the following: Purchase and load borrow pit material at site, haul 2 km round-trip, and spread with 200 HP dozer = $15/m3; extra mileage charge for each km =…
3. The following table lists the results of a standard Proctor assay. Determine the maximum dry compaction density and the optimum moisture content. Also obtain the void ratio and degree of saturation for optimum moisture content. Assume Gs = 2.68.
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?
The results of a standard Proctor test are given in the following table. Determine the maximum dry unit weight of compaction and the optimum moisture content. Also determine the moisture content required to achieve 95% of γd(max). Calculate and plot the 80% and 100% saturation lines.