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19. Types of Field Compaction Equipment

The chapter presents various types of field compaction equipment, detailing their features, capacities, and suitability for different soil types. It categorizes equipment such as smooth wheeled steel drum rollers, pneumatic tyred rollers, and sheepsfoot rollers, highlighting their advantages and limitations based on weight and soil conditions. This information is crucial for selecting the appropriate compaction equipment in construction projects.

Sections

Types of Field Compaction Equipment

This section covers various types of field compaction equipment used in construction and earthworks, detailing their functionalities and suitable applications.

1 Section Overview

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1.1 Smooth Wheeled Steel Drum Rollers

Smooth wheeled steel drum rollers are used for compaction of various soil types and range in capacity from 20 kN to 200 kN.

1.2 Pneumatic Tyred Rollers

Pneumatic tyred rollers are vehicles equipped with rubber tires designed for soil compaction, ideal for various soil types.

1.3 Sheepsfoot Rollers

Sheepsfoot rollers are specialized compaction equipment designed for kneading fine-grained soils.

1.4 Impact Rollers

Impact rollers are a type of compaction equipment used for soil stabilization, particularly effective for certain soil types.

1.5 Vibrating Rollers

This section provides an overview of vibrating rollers, highlighting their specifications, application suitability, and operational characteristics.

1.6 Hand Operated Vibrating Plate & Rammer Compactors

This section introduces hand-operated vibrating plate and rammer compactors, highlighting their operational roles in construction and compaction.

Smooth Wheeled Steel Drum Rollers

This section covers various types of field compaction equipment, distinguishing between self-propelled and towed machinery.

1.1 Section Overview

Start current section content and materials

1.1.1 Capacity 20 kN to 200 kN

This section outlines the types of field compaction equipment, focusing on those with capacities ranging from 20 kN to 200 kN.

1.1.2 Self propelled or towed

This section covers various types of field compaction equipment, distinguishing between self-propelled and towed machinery.

1.1.3 Suitable for well graded sand, gravel, silt of low plasticity

This section discusses various types of field compaction equipment suitable for different soil types, emphasizing their capabilities and limitations.

1.1.4 Unsuitable for uniform sand, silty sand and soft clay

This section discusses the limitations of various types of field compaction equipment in relation to specific soil types, emphasizing those unsuitable for uniform sand, silty sand, and soft clay.

Pneumatic Tyred Rollers

This section describes pneumatic tyred rollers, their characteristics, and suitability for various soil types.

1.2 Section Overview

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1.2.1 Usually two axles carrying rubber tyred wheels for full width of track.

This section describes pneumatic tyred rollers, their characteristics, and suitability for various soil types.

1.2.2 Dead load (water) is added to give a weight of 100 to 400 kN.

This section discusses the importance of pneumatic tyred rollers in compaction, particularly their dead load range which is modified by adding water.

1.2.3 Suitable for most coarse & fine soils

This section discusses various types of field compaction equipment suitable for different soil types, particularly focusing on pneumatic tyred rollers and other compaction machines.

1.2.4 Unsuitable for very soft clay and highly variable soil.

This section discusses the limitations of certain types of compaction equipment, particularly in relation to very soft clay and highly variable soil.

Sheepsfoot Roller

The Sheepsfoot Roller is a compaction equipment designed for fine-grained soil, sand, and gravel, characterized by its unique footed drum which kneads the soil during operation.

1.3 Section Overview

Start current section content and materials

1.3.1 Self propelled or towed

This section discusses the different types of field compaction equipment, specifically focusing on those that are self-propelled or towed.

1.3.2 Drum fitted with projecting club shaped feet to provide kneading action.

This section discusses the characteristics and applications of sheepsfoot rollers, a type of compaction equipment featuring drum fitted with projecting feet for effective kneading action.

1.3.3 Weight of 50 to 80 kN

This section covers sheepsfoot rollers, including their specifications and suitable applications in soil compaction.

1.3.4 Suitable for fine grained soil, sand & gravel with considerable fines.

This section details various types of field compaction equipment suited for fine-grained soils, sands, and gravels with considerable fines.

Learning Objectives

  • Different types of field compaction equipment are available for various soil types.

  • Each type of roller has specific characteristics that determine its suitability for different applications.

  • Understanding the properties of soils is essential for effective compaction.

Key Concepts

Smooth Wheeled Steel Drum Rollers

Compaction equipment with capacities ranging from 20 kN to 200 kN, suitable for well-graded sand, gravel, and low plasticity silt.

Pneumatic Tyred Rollers

Equipment usually equipped with two axles carrying rubber tyred wheels, offering dead weight ranging from 100 to 400 kN, and suitable for coarse and fine soils.

Sheepsfoot Rollers

Rollers featuring drum-shaped bodies with kneading feet, which are effective for fine-grained soils, sand, and gravel, typically weighing between 50 to 80 kN.

Practice Exercises

Total Questions

2

Estimated Time

4 min

Passing Score

70%

Instructions

  • Read each question carefully
  • You can use hints if you need help
  • Complete all questions before submitting
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