Construction methods
Download
1 / 20

Construction Methods - PowerPoint PPT Presentation


  • 101 Views
  • Uploaded on

Construction Methods. Lecture 10 Compaction Equipment and Procedures. Compaction Equipment and Procedures. Types of Compaction Equipment. Compaction Equipment and Procedures. Types of Compaction Equipment. Compaction Equipment and Procedures. Sheepsfoot Rollers

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Construction Methods' - lazar


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Construction methods

Construction Methods

Lecture 10

Compaction Equipment and Procedures


Compaction equipment and procedures
Compaction Equipment and Procedures

  • Types of Compaction Equipment


Compaction equipment and procedures1
Compaction Equipment and Procedures

  • Types of Compaction Equipment


Compaction equipment and procedures2
Compaction Equipment and Procedures

  • Sheepsfoot Rollers

    • Sheepsfoot rollers are drums with a large number of projections.

    • These rollers are most effective in compacting clayey soils.

    • The area of each of these projections may range from 25 to 85cm2



Compaction equipment and procedures4
Compaction Equipment and Procedures

  • Tamping Foot Compactor


Compaction equipment and procedures5
Compaction Equipment and Procedures

  • Tamping Foot Compactor


Compaction equipment and procedures6
Compaction Equipment and Procedures

  • Tamping Foot Compactor

    • It is suitable for compacting all fined-grained soils, but is generally not suitable for use on cohesionless granular soils.

    • The compacted depth is limited to 20cm

    • This type roller does not adequately compact the upper 5 to 8 cm of the soil, therefore, for the last lift it should be followed with a pneumatic or smooth-drum roller.


Compaction equipment and procedures7
Compaction Equipment and Procedures

  • Tamping Foot Compactor


Compaction equipment and procedures8
Compaction Equipment and Procedures

  • Vibratory Rollers

    • Vibratory rollers are very efficient in compacting granular soils.

    • Vibrators can be attached to the following rollers

      • plate compactors,

      • smooth drum rollers, and

      • tamping foot rollers

    • Principles of vibratory rollers

      • The vibration is produced by rotating off-center weights


Compaction equipment and procedures9
Compaction Equipment and Procedures

  • Smooth Drum Vibratory Soil Compactor


Compaction equipment and procedures10
Compaction Equipment and Procedures

  • Smooth Drum Vibratory Soil Compactor

    • This roller uses vibratory action in conjunction with ballast weight of the drum to compact.

    • One of the most effective means of attaining density for cohesionless materials.

    • It is a relatively light roller therefore maximum loose-lift depth is 25cm


Compaction equipment and procedures11
Compaction Equipment and Procedures

  • Vibratory Tamping Foot Compactor


Compaction equipment and procedures12
Compaction Equipment and Procedures

  • Dual-Drum Vibratory Compactor

    • Use this roller to compact cohesionless subgrade, base courses, wearing surfaces, and asphalt


Compaction equipment and procedures13
Compaction Equipment and Procedures

  • Compaction in Confined Areas


Compaction equipment and procedures14
Compaction Equipment and Procedures

  • Compaction in Confined Areas


Compaction equipment and procedures15
Compaction Equipment and Procedures

  • Compaction in Confined Areas


Compaction equipment and procedures16
Compaction Equipment and Procedures

  • Dynamic Compaction

    • This process primarily consists of dropping a heavy weight repeatedly on the ground at regular intervals.

    • The weight of the hammer varies over a range of 8 to 35 tons.

    • The height of the hammer drop varies between 10 to 30 meter.

    • Can achieve densification to a depths of about 10 meter


Compaction equipment and procedures17
Compaction Equipment and Procedures

  • Selection of Compaction Equipment


Compaction equipment and procedures18
Compaction Equipment and Procedures

  • Selection of Compaction Equipment


ad