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Question
For road construction, in general, sheep foot rollers are most suitable for which of the following soils?
lMd fuekZ.k ds fy,] lkekU;r% 'khi QqV jksyj fuEufyf[kr  e`nkvksa eas ls dkSuls ds fy, lcls mi;qDr gksrs gSA
A.
Silt
B.
High plasticity clay
C.
Sand
D.
Gravel
Answer ( Option B)

High plasticity clay

Solution

• Sheep-foot Roller used for compaction of cohesive soil such as heavy clay and silty clay and not effective for sandy soil.
• Pneumatic tyred rollers suitable for compacting closely graded sand and fine grained cohesive soil at water content equal to plastic limit also used in cold laid bituminous pavement, soft base coarse materials or layer of loose soil.
• Vibratory Rollers suitable for cohesionless soil.
• Grid Roller suitable for compacting most coarse grained soil. It is provide high contact pressure but little kneading action.

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