Q1: A compacted fill currently under construction will support a proposed supermarket. One of the field density tests in this fill gave a unit weight of 121 pfc and a moisture content of 12.5%. A series of modified proctor tests have also been performed on the fill soils per ASTM D1557 and they gave a maximum dray unit weight of 130 Pcf and an optimum moistures content of 13%. Compute the relative compaction based on the modified proctor test.

Q1: A compacted fill currently under construction will support a proposed supermarket. One of the field density tests in this fill gave a unit weight of 121 pfc and a moisture content of 12.5%. A series of modified proctor tests have also been performed on the fill soils per ASTM D1557 and they gave a maximum dray unit weight of 130 Pcf and an optimum moistures content of 13%. Compute the relative compaction based on the modified proctor test.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter5: Soil Compaction

Section: Chapter Questions

Problem 5.16P

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A field density test has been conducted in a compacted fill that is currently under construction.The test results indicate a relative compaction of 101-103%, which made the constructionmanager believe the test must be incorrect. He believes it is impossible for the dry unit weightinthe field to be greater than the maximum dry unit weight from the Proctor compaction test.Explain why the relative compaction in the field could indeedbe greater than 100%.
A compacted fill, currently under construction, will support a proposed supermarket. One of the field density tests in this fill gave a unit weight of 121 lb/ft³ and a moisture content of 12.5%. A series of modified Proctor tests have also been performed on the fill soils per ASTM D1557, and they gave a maximum dry unit weight of 117 lb/ft³ and an optimum moisture content of 13.0%. Compute the relative compaction based on the modified Proctor test and determine whether or not it satisfies the normal compaction specification for such a project.
A compacted fill with a unit weight of 121 lb/ft^3 and a moisture content of 12.5% will be used for construction of a warehouse. Proctor compaction test was performed on a sample of the fill material. The test results revealed a maximum dry unit weight of 117 lb/ft^3 and an optimum moisture content of 13.0%. Compute the relative compaction based on the results of the Proctor compaction test.
A soil sample was taken from a proposed embankment that is to be used as compacted fill for a building foundation. The sample was sent to a soil laboratory for a compaction test. Standard Proctor Method B was performed and the results showed maximum dry unit weight of 19.45 kN/m³ and optimum moisture content is 12.6%. During placement, the contractor had a field compaction test performed and the field test results were in-place dry unit weight of 18.65 kN/m3 and moisture content 11.6%. Required Determine the percent compaction achieved by the contractor, the the nearest 10th of a percent.
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STEP BY STEP PROCEDURE FOR STANDARD PROCTOR TEST AND MODIFIED AASHTO TEST FOR COMPACTION
A soil sample was taken from a proposed cut area in a highway construction project and sent to a soils laboratory for a compaction test, using the Standard Proctor compaction procedure. Results of the test are as follows: Maximum dry unit weight = 112.6 lb/ft3 %3D Optimum moisture content = 15.5% The contractor, during construction of the soil em-bankment, achieved the following: Dry unit weight reached by field compaction = 107.1 Ib/ft3 Actual water content 16.0% %3D Determine the percent compaction achieved by the contractor.
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A compaction test was conducted in a soils laboratory using the Standard Proctor Method B test procedure. The weight of the compact soil specimen plus mold and baseplate was determined to be 3889 g. The volume and mass of the mold were 943.8 cm³ and 2067.0 g, respectively. A moisture content test was carried out on a representative portion of the sample and the results were 10.4%. Required Determine the (wet) unit weight in metric units, to the nearest 100th. Your Answer:
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Dynamic loading, Vibro static test, Standard proctor and modified proctor are tests to determine soil compaction characteristics. Is it true ?
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