GATE CE 2016 Set 2 — Question 52

MCQ+2 / -0.67EasyStandard Proctor TestEffective Stress & CompactionGeotechnical EngineeringModified Proctor TestOMC & MDD

Geotechnical Engineering → Effective Stress & Compaction → Modified Proctor Test

Last updated 5 September 2026

Question

OMC-SP and MDD-SP denote the optimum moisture content and maximum dry density obtained from standard Proctor compaction test, respectively. OMC-MP and MDD-MP denote the optimum moisture content and maximum dry density obtained from the modified Proctor compaction test, respectively. Which one of the following is correct?

Correct answer (B) OMC-SP OMC-MP and MDD-SP < MDD-MP Solution The modified Proctor test uses significantly higher compaction energy compared to the standard Proctor test. Increasing compaction energy results in: 1. A higher maximum dry density (MDD). 2. A lower optimum moisture content (OMC). Therefore: MDD-MP > MDD-SP (or MDD-SP < MDD-MP) OMC-MP < OMC-SP (or OMC-SP > OMC-MP) This corresponds to option (B). Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (B) OMC-SP OMC-MP and MDD-SP < MDD-MP Solution The modified Proctor test uses significantly higher compaction energy compared to the standard Proctor test. Increasing compaction energy results in: 1. A higher maximum dry density (MDD). 2. A lower optimum moisture content (OMC). Therefore: MDD-MP > MDD-SP (or MDD-SP < MDD-MP) OMC-MP < OMC-SP (or OMC-SP > OMC-MP) This corresponds to option (B).

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