Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 17, Problem 9P
To determine
(a)
Liquid limit of the soil using the plot of the flow curve
To determine
(b)
Plasticity index of the soil
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In a constant head permeability test, a soil sample is compacted into a round PVC pipe and placed into a tank as shown. After sufficient time is allowed for saturation of the soil, the test is conducted under standard temperature pressure conditions for 4 hours. A total of 227 g of water is decanted into a measuring vessel during the test. What is the coefficient of permeability of the soil?
Following are the results from the liquid and plastic limit tests for a soil. Liquid limit test:
Plastic limit test: PL = 18.7%a. Draw the flow curve and obtain the liquid limit.b. What is the plasticity index of the soil?
c. Determine the liquidity index of the soil when the in situmoisture content is 26%
Prob.1
The following data were obtained from the Atterberg Limits test for a soil Liquid limit = 41% Plastic limit = 21.1 %
a.) What is the plasticity index of the soil?b.) If the in situ moisture content of the soil is 30%, what is the liquidity index of the soil?c.) What would be the nature of the soil?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Results from a liquid limit test conducted on a soil are given below. a. Determine the liquid limit of the soil. b. If it is known that the PI = 6.5, what would be the plastic limit of the soil? c. Determine the liquidity index of the soil if win situ = 23.8%arrow_forwardA falling head permeability test is conducted on silty soil. The sample diameter is 10.0 cm and its length or thickness is 6 cm. The diameter of the standpipe is 6.0 mm. The head at the start of the test is 58 cm. The test lasts 9 min and the head falls to 38 cm. Find the coefficient of permeability of this soil. The answer must be in 6 decimal places. Use units cm/sec.arrow_forwardThe following are the observed lab values for determining the maximum dry unit weight of the soil. (See table below) Determine the optimum moisture content in percent (3 decimals) Determine the maximum dry unit weight, in kN/m3 (round off to the nearest 10th) How much water (in kg) must be added per m3 of soil to achieve maximum dry unit weight if initially the moisture content of the in-situ soil before testing was 6%?arrow_forward
- A sample of the soil tested in triaxial with dimensions of 38 mm diameter and 76 mm height, its weight afterthe test was 205.1 g and after drying in an oven the weight was 175.6 g, determine the moisture content,bulk and dry densities and unit weights. 1- Analyse the results of liquid limit, plastic limit and plasticity indices determined 2- What is the importance of specific gravity, in the given examples?arrow_forwardThe laboratory tests on a soil sample yielded the following results: LL= 54%, PL= 25%, natural moisture content= 29%, the % finer than 0.002 = 18%. Determine the liquidity index of the soil. a.0.141 b.0.135 c.0.138 d.0.150arrow_forwardDuring a shrinkage limit test on a silty clay, the volume of dry soil pat was found to be 11.76 cu.m and its dry mass was 23.68 g. The shrinkage limit was 11.15. a. What is the density of soil solids? b. What is the void ratio assuming the soil is fully saturated? c. What is the dry density of the soil?arrow_forward
- The consistency limits of a soil sample are: LL = 52%, PL= 35%, SL= 17%. If a specimen of this soil shrinks from a volume of 10 ?? at liquid limit to 6.1 ?? at plastic limit, determine the specific gravity of solids.arrow_forwardA liquid limit test was performed on a soil sample. It was found out that the moisture content at 14 blows was 65%, and that at 31 blows was 26%. What will be the resulting liquid limit of the soil?arrow_forwardA soil sample has a volume of 29cm^3 and a mass of 45.5 g in its natural state in the field. After drying the mass of the sample reduced to 32g. if specific gravity of solids is 2.66. find a) water content b)Vs, Va, Vw c)void ratio d) Vw in 1m3 if the soil was fully saturatedarrow_forward
- Results from liquid and plastic limit tests conducted on a soil are given below.Liquid limit tests: Plastic limit tests: PL = 19.1%a. Draw the flow curve and obtain the liquid limit.b. What is the plasticity index of the soil? c.Determine the liquidity index of the soil if Winsitu = 21%.arrow_forwardA soil sample having a volume of 1 x 10^-3 m^3 has a mass of 1950 grams and moisture content of 10%. The specific gravity of the soil solids is 2.66. What is the value of the dry density of the soil? What is the value of the void ratio? What is the value to the degree of saturation?arrow_forwardA soil sample obtained from below the groundwater table has a moisture content of 23.5% and a specific gravity of solids of 2.72. Compute its unit weight, dry unit weight, buoyant unit weight, void ratio, porosity, and degree of saturation.arrow_forward
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