1) What is the required compaction time per layer in the Vibrating Hammer Test? a) 30 ± 2 s b) 45 ± 2 s c) 60 ± 2 s d) 90 ± 2 2) How many layers of soil are compacted in 2.5KG Rammer Compaction Test? a) Two b) Three c) Four  d) Five  3) The 4.5kg Rammer compaction test delivers more energy per blow than the 2.5kg Rammer compaction test. a) True b) False 4) What is the weight of the rammer used for Light Compaction? a) 1 kg b) 2.5 kg c) 4.5 kg d) 5 kg 5) How many layers of soil are compacted in the 4.5Kg Rammer test? a) Two b) Three c) Four d) Five 6) The Vibrating Hammer Test is mainly used for which type of soil? a) Fine-grained silts b) Organic soils c) Coarse granular soils d) Clay soils 7) In all compaction methods, the mould must be placed on a firm, solid base. a) True b) False 8) How many layers are used when compacting soil in the Vibrating Hammer Test? a) One b) Two c) Three d) Four 9) What do you do after you have removed the compacted soil from the mould? a) Discard the all sample.  b) Take a water content. c) Recompact the sample. d) Place the sample in a bag. 10) Which of the following factors does not affect the outcome of a compaction test? a) Rammer weight b) Number of blows c) Soil temperature d) Drop height

Compaction Tests Quiz

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