Member $99.00 | Non-Member $159.00
Sponsored by ASCE Continuing Education and the Geo-Institute (G-I).
INSTRUCTOR: Naresh Samtani, Ph.D., P.E., D.GE, F.ASCE
Purpose and Background
In the construction of highway embankments, earth dams, retaining walls, structural foundations, and many other facilities, loose soils must be compacted to increase their densities. The principal objectives in compacting soil are normally to create fill of high strength and low compressibility, and, in the case of water-retaining fill, of low permeability. This webinar discusses the conventional (e.g., Proctor) methods of compaction and alternative methods of compaction based on soil air voids and shear strength principles. It evaluates applicability of compaction procedures for various soil landforms (e.g., residual vs transported) soils. It also discusses implications of laboratory tests on field compaction specifications and properties of compacted soils such as shear strength, volume change, and permeability. It evaluates the concept of cohesion component of shear strength in compacted soils.
Primary Discussion Topics
- Basics of compaction
- Laboratory compaction procedures
- Field compaction procedures
- Density, relative density, and relative compaction
- Relative compaction (RC) method of quality control
- Soil Air Voids and Strength (SAV&S) method of quality control
- Shear strength properties of compacted soils
- Volume change characteristics of compacted soils
- Permeability characteristics of compacted soils
- Proof rolling
Learning Outcomes
- Understand the basics of compaction
- Contrast laboratory and field compaction processes
- Understand and choose appropriate compaction control method
- Explain shear strength properties of soils
- Discuss volume change characteristics of compacted soils
- Introduce permeability properties of compacted soils
- Explain the importance of proof rolling
Webinar Benefits
- Discuss the compaction of soils
- Explain the effect of compaction on performance characteristics of soils (strength, volume changes, and permeability)
- Identify and choose appropriate compaction control method
- Understand the importance of proof rolling
Intended Audience
- Geotechnical specialists
- Inspectors
- Agencies/owners
- Contractors
Webinar Outline
- Basics of compaction
- Laboratory compaction procedures
- Field compaction procedures
- Density, relative density, and relative compaction
- Relative compaction method of quality control
- Soil air voids and strength (SAV&S) method of quality control
- Shear strength properties of compacted soils
- Volume change characteristics of compacted soils
- Permeability characteristics of compacted soils
- Proof rolling
- Summary and references