The Proctor penetration needle is used to measure:
Choose the correct answer
Shear strength in the field
Soil bearing capacity
Penetration resistance to estimate moisture content at a given density
In-situ CBR value
Correct Answer
C. Penetration resistance to estimate moisture content at a given density
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The Proctor penetration needle (IS 2720 Part 4) is a field device to determine the water content corresponding to a particular degree of compaction achieved in the field, by correlation with the laboratory Proctor test penetration resistance.
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