Pneumatic tyred rollers are suitable for compacting:

Question

Question

This question was previously asked in

JKSSB JE CE 2021 Official Paper Shift 2 (Held on 28 Oct 2021)

Answer 1

Concept:

Compaction Equipment:

It is often got by using a vibrating or non-vibrating steel drum roller, a pneumatic-tire roller, a grid or cleated roller, or a sheep-foot roller.

Pneumatic tyred rollers:

Suitable for soil type: Non-plastic silts and fine sands, not suitable for uniformly graded soil
Nature of Project: Base, sub-base, and embankment compaction for highways, airfields, etc.

Different compaction equipment with suitable soil is as follows:

Type of equipment	Suitability of soil type	Nature of project
Rammers or tampers	All soils	In confined areas such as fills behind retaining walls, basement walls, etc. Tench fills
Smooth wheeled rollers	Crushed rocks, gravels, sands	Road construction etc.
Sheepsfoot rollers	Clayey soil	The core of earth dams
Vibratory rollers	Sands	Embankments for oil storage tanks, etc.