Standard Proctor test was conducted on a silty clay soil collected from a proposed construction site. The results are shown in the following table. trial no. mass of moist soil in the mold (g) moisture Dry density content (%) 1 1480 9.4 1570 12.4 1690 14 1700 15.5 5 1650 18.3 a. Determine the maximum dry density (kg/m3) of compaction and the optimum moisture content. Given: volume of mold: 943.3 cm3. b. What is the degree of saturation at optimum moisture content? Gs=2.75 c. If the required field dry unit weight is 1470 kg/m3, what is the relative compaction? d. What should be the range of compaction moisture contents in the field to achieve the above relative compaction? 3. 4.

Standard Proctor test was conducted on a silty clay soil collected from a proposed construction site. The results are shown in the following table. trial no. mass of moist soil in the mold (g) moisture Dry density content (%) 1 1480 9.4 1570 12.4 1690 14 1700 15.5 5 1650 18.3 a. Determine the maximum dry density (kg/m3) of compaction and the optimum moisture content. Given: volume of mold: 943.3 cm3. b. What is the degree of saturation at optimum moisture content? Gs=2.75 c. If the required field dry unit weight is 1470 kg/m3, what is the relative compaction? d. What should be the range of compaction moisture contents in the field to achieve the above relative compaction? 3. 4.

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 6.9P

See similar textbooks

Similar questions

The resulting of the Standard Proctor Test is as follows: Vol. of Proctor Mold (cu.m) Wt. of wet soil in mold (kg) Moisture (%) 943.3 1.76 12 943.3 1.86 14 943.3 1.92 16 943.3 1.95 18 943.3 1.93 20 943.3 1.90 22 a. Determine the maximum dry unit weight of compaction b. Determine the optimum moisture content
arrow_forward Question A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. A standard Proctor test was carried out in the laboratory and the following data were recorded Diameter of mold = 101.40 mmHeight of mold = 116.70 mmMass of mold = 4196.50 gramSpecific gravity, Gs = 2.69 a) Determine the maximum dry unit weight and optimum water content.b) If the desired compaction in the field is 95% of the standard Proctor test results, what values of dry unit weight and water content would you specify?c) Explain why you select these values.d) What field equipment would you specify to compact the soil in the field, and why?e) How would you check that the specified dry unit weight and water content are achieved in the field? I Need The Answer of part (d) and (e)...
You are checking a field-compacted layer of soil. The laboratory control curve has the following values: gd (kN/m3) w (%) 16.34 14 16.57 16 16.65 18 16.50 20 16.26 22 15.87 24 The specification for compaction states that the field-compacted soil must be at least 95% of the maximum control density and within of the optimum moisture for the control curve. You dig a hole 1m3 in the compacted layer and extract a sample that weighs 17.2 kN wet and 14.1 kN dry. (a) What is the compacted gd? The compaction w? The percent compaction? Does the sample meet the specifications? (b) If the specific gravity is 2.68, what is the compacted degree of saturation? If the sample were saturated at constant density, what would be the water content?
Determine the maximum dry unit weight of compaction Determine the optimum moisture content Determine the void ratio at the optimum moisture content. Gs = 2.70 Determine the degree of saturation at the optimum moisture content A field unit determination test for the soil, yielded the following data. Moisture content = 12% and moist unit weight = 106 lb/cu.ft. Determine the relative compaction.
A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. A standard Proctor test was carried out in the laboratory and the following data were recorded Diameter of mold = 101.40 mmHeight of mold = 116.70 mmMass of mold = 4196.50 gram Specific gravity, Gs = 2.69 Determine the maximum dry unit weight and optimum water content. If the desired compaction in the field is 95% of the standard Proctor test results, what values of dry unit weight and water content would you specify? Explain why you select these values. What field equipment would you specify to compact the soil in the field, and why? How would you check that the specified dry unit weight and water content are achieved in the field?
Problem 1:The results of a standard Proctor test are given in the following table. Given: Mold volume = 1/30 ft^3 and Gs = 2.69. Determine the void ratio and the degree of saturation at the optimum moisture content. Trial # Weight of moist soil in the mold (lb) Moisture content (%) 1 3.7 8.6 2 4.15 10.6 3 4.69 12.5 4 4.62 14.9 5 4.02 16.7 6 3.63 18.3 Problem 2The laboratory test in Problem 1 is used to develop field compaction specification for a highway project. A field unit weight determination during the construction revealed that the in situ moist unit weight is 124 lb/ft3 and the moisture content is 13.7%. Determine the relative compaction in the field.
10. The results of a Standard Proctoretest is tabulated as follows: (SEE PICTURE) Determine the maximum dry unit weight of compaction Determine the optimum moisture content Determine the void ratio at the optimum moisture content Gs = 2.70 Determine the degree of saturation at the optimum moisture content A field unit determination test for the soil, yielded the following data. Moisture content = 12% and moist unit weight = 106 pcf. Determine the relative compaction.
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?
A fine-grained soil has 60% clay with LL 220%, PL 545%, and a natural water content of 6%. A standard Proctor test was carried out in the laboratory and the following data were recorded Diameter of mold = 101.40 mmHeight of mold = 116.70 mmMass of mold = 4196.50 gram Specific gravity, Gs = 2.69 a) Determine the maximum dry unit weight and optimum water content.b) If the desired compaction in the field is 95% of the standard Proctor test results, what values of dry unit weight and water content would you specify?c) Explain why you select these values.d) What field equipment would you specify to compact the soil in the field, and why?e) How would you check that the specified dry unit weight and water content are achieved in the field?
A 1972 kg/mᶟ wet unit weight and 5.5% average actual moisture content were obtained from a laboratory data during the conduct of FDT on an aggregate base coarse materials, what is the dry unit weight of the soil? From the above laboratory data and the obtained dry unit weight of soil, What will be the degree of compaction of the compacted materials when a 1960 kg/mᶟ maximum dry density is used as a reference Laboratory compaction data?
01- The weight of a sample of saturated soil before drying is 2.8 lb and after drying is 2.1 lb. If the specific gravity of the soil particles is 2.6, determine: (a) moisture content, (b) void ratio, (c) porosity, (d) bulk density, and (e) dry density.
A fully saturated soil sample has a volume of 28 cc. The sample was dried in oven and the weight of the dry soil pat was found to be 48.76 g. Given G= 2.68. Determine moisture content in percent.