Answered: Question- An uncompacted heap of soil…

Question- An uncompacted heap of soil has a volume of 10,000 m³ and void ratio of 1. If the soil is compacted to a volume of 7500 m³, find the corresponding void ratio of the compacted soil.

Construction Materials, Methods and Techniques (MindTap Course List)

4th Edition

ISBN:9781305086272

Author:William P. Spence, Eva Kultermann

Publisher:William P. Spence, Eva Kultermann

Chapter5: Soils

Section: Chapter Questions

Problem 2RQ: How is the plasticity index of a soil determined?

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The majority of the earth's surface is composed of water. The water which is available for use by the living beings on earth comes from various water resources. Water resources are the naturally occurring water bodies that are intended to be used by the living beings on earth for drinking and other uses. Water resources provide 3% as freshwater, 97% as saltwater, two-thirds of which are frozen as glaciers and ices. The remaining water which generally doesn't remain frozen are the water resources found underground, precisely known as groundwater. The majority of these water sources act as non-convention sources of power generation, like in hydropower stations.

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How is the plasticity index of a soil determined?
Problem 1: For a gravel with D60 0.48mm, D30 0.25mm, and D10 coefficient and the coefficient of gradation. Is it a well-graded or poorly graded soil? - = = = 0.11mm, calculate the uniformity Problem 2: 0.3 mm, D30 The following values for a sand are given: D10 Determine Cu and Cc and state if it is a well-graded or a poorly graded soil. = 0.41 mm, and D60 = = 0.77 mm.
1. Specifications on a job require a fill using borrow soil to be compacted to 95% of its standard Proctor maximum dry density. Tests indicate that this maximum is 124 lb/ft³ when dry. The soil now has 12% moisture. The borrow material has a void ratio of 0.6 and a solid specific gravity of 2.65. What is the minimum volume of borrow soil required per 1.0 ft³ of fill volume? Equations: P₁ W = M M = M₁ V₁ ; Pa M S V₁ ;Ps = M. -; Pw = V ·;e= ; n = Vw V, V₁ M. W V. V x100%; G = -; Constants: pw = 1000 kg/m³; yw-62.4 pcf Pw : S = V. W V₁₂ -×100%;
1. Why will bulk density vary between soils but it is valid to use a constant value for particle density (2.65 g cm-3)?
GEOTECHNICAL ENGINEERING: The Undisturbed soil at a given borrow pit is found to have the following parameters. The water content is 15%, the void ratio is 0.60 and the specific gravity of the solids is 2.70. The soil from this borrow pit is to be used to construct a rolled fill having a finished volume of 50,000 yd3 . The soil is excavated by means of a shovel and dumped on trucks. When loaded to capacity these trucks are found to contain, on average, a net weight of wet soil equal to 13,000 lbs. In the construction process, the trucks dump their load on the fill, the material is spread and broken up, after which a sprinkler adds water until the water content is equal to 18%. The soil and water are thoroughly mixed by means of dicers (or other similar equipment) and then compacted until the dry unit weight γd=110 lbs/ft3. Helpful Conversions (3ft=1yd), (γw=62.4 lbs/ft3), (7.48gal/1ft3 ) a) Assuming that each load is a capacity load, how many truck loads are required to construct the…
GEOTECHNICAL ENGINEERING: The Undisturbed soil at a given borrow pit is found to have the following parameters. The water content is 15%, the void ratio is 0.60 and the specific gravity of the solids is 2.70. The soil from this borrow pit is to be used to construct a rolled fill having a finished volume of 50,000 yd3 . The soil is excavated by means of a shovel and dumped on trucks. When loaded to capacity these trucks are found to contain, on average, a net weight of wet soil equal to 13,000 lbs. In the construction process, the trucks dump their load on the fill, the material is spread and broken up, after which a sprinkler adds water until the water content is equal to 18%. The soil and water are thoroughly mixed by means of dicers (or other similar equipment) and then compacted until the dry unit weight γd=110 lbs/ft3. Helpful Conversions (3ft=1yd), (γw=62.4 lbs/ft3), (7.48gal/1ft3 ) a) If the fill should become saturated at some time subsequent to construction and does not change…
Consider a soil that is being placed as a fill and compacted using a sheepsfoot roller (a pieceof construction equipment). Will the action of the roller change the void ratio of the soil?Explain.
Q.1. Select the right answer of the following: 1. The void ratio of soil can be: a. greater than void ratio b. less than void ratio c. equal to void ratio d. no one 2. When Gravel had coefficient of uniformity of 3, the soil could be according USCS: a. GW b. GP c. SP d. any one of them 3. In a wet soil mass, air occupies 1/6 of volume and water occupies 1/3 of volume. The void ratio is: a. 0.25 b. 0.50 4. For the soil with LL= 45%, PL = 25% and water content = 15% the liquidity index is: B.0 с. 1.50 d. 1.00 a.0.6 5. The type of unit weight of soil s depends on: с. 1 dinone of them а. е b. n c. YW d. S 6. Soil has LL of 30, the corresponding plasticity index given by A-line: a. 7.3 b. 7.5 c. 9.0 d. 9.5 7. The porosity in of soil is function of: c. Vv & n P.= L.L-PL 12:45-25=2 a. Vv&Vs b. Vv& Vt d. Vs & n 8. For a soil deposit having n= 33% and G 2.6, ysaturated= 15KN/m3, S is: %3D а. 1.0 b. 1.05 с. 1.07 d. 1.10 10. When saturation in soil sample occurs, the degree of saturation: a.…
The Undisturbed soil at a given borrow pit is found to have the following parameters. The water content is 15%, the void ratio is 0.60 and the specific gravity of the solids is 2.70.The soil from this borrow pit is to be used to construct a rolled fill having a finished volume of 50,000 yd3. The soil is excavated by means of a shovel and dumped on trucks. When loaded to capacity these trucks are found to contain, on average, a net weight of wet soil equal to 13,000 lbs.In the construction process, the trucks dump their load on the fill, the material is spread and broken up, after which a sprinkler adds water until the water content is equal to 18%. The soil and water are thoroughly mixed by means of dicers (or other similar equipment) and then compacted until the dry unit weight γd=110 lbs/ft3 Helpful Conversions (3ft=1yd), (γw=62.4 lbs/ft3), (7.48gal/1ft3) a) Assuming that each load is a capacity load, how many truck loads are required to construct the fill?b) What is the volume in…
A synthetic soil is made by mixing: 400 plastic spheres with Gs = 0.8 and diameter = 5mm, and 250 glass spheres with Gs = 2.65 and diameter = 4mm. %3D %3D According to the USCS, would the synthetic soil classify as a sand or as a gravel? Show work to support your answer.
A container of volume 2.83 X 10-3 m3 weighs 9.8 N. Dry sand was poured to fill the container. Thecontainer and the sand weigh 52.3 N. Calculate (a) the void ratio and (b) the porosity. Describe thecondition of the soil (loose or dense). Assume Gs. = 2.7
Read the question carefully and give me both a&b right solutions. A proctor compaction test in the laboratory on a borrow pit soil gives maximum unit weight of 19 kN/m3 and optimum water content of 11.5%. The bulk unit weight and water content of the soil in the borrow pit are 17.2 kN/m3 and 8.2%, respectively. A highway fill is to be constructed using this soil. The specifications require the fill to be compacted to 95% Proctor compaction. (a) What is the additional weight of water per unit volume required to bring the moisture content to the optimum value to achieve 95% Proctor compaction? (b) How many truckloads of borrow pit soil will be required for a 100,000 m3 highway embankment - assuming each truck has a capacity of 10 m3 ?