Soil as a three-phase System

Soil Mechanics

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Description
Media
Resources
Selected Topics
Web Class Assignments

Soil deposits consist of the soil particles and the void space between the particles. Soil mass is generally referred to as three-phase system because it consists of solid particles, liquid, and gas. For many civil engineering purposes, the liquid may be considered to be water and the gas as air (Figure 1 and 2) with the exception geoenvironmental, and oil and gas applications. A saturated soil may be assumed to have only two of these phases, as voids are completely saturated with water (Figure 3).

Figure 1: Soil Mass

Figure 2: Three Phase Diagram

Figure 3: Fully Saturated Soil

Media

How do vertical and horizontal (lateral) pressures arise in soil and water?
Engineering Models

Educational Resources

Phase Relations Powerpoint Presentation. Prepared and donated by Professor Sivakugan, James Cook University, Australia.
Phase Relations Chapter 2. Lecture Notes. Prepared and donated by Professor Sivakugan, James Cook University, Australia.

Selected Topics

Soil Mechanics Sheepsfoot roller Compaction Equipment Clay Mineral Image Collection Bull’s Liver Soil Geotechnical engineering software package in R, by Dr. James Kaklamanos (Merrimack College)USGS Learning Activity: What's In My Soil?Soil Mechanics Education: (What) to Teach or not to Teach - From Theory to Practice The phenomenon of Quick Clays ISSMGE Educational Video: “What happens when soil compresses”, using best instructional practices Numerical Modelling: On the Importance of an Appropriate Soil Model

Soil Settlement

Shear Strength of Soils

Soil Behavior Modeling

2 pages

Liquefaction and Earthquake Modelling in PLAXIS Numerical Modelling: On the Importance of an Appropriate Soil Model

Web Class Assignments

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CE 179-Geosystems Engineering Design

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CE 179-Geosystems Engineering Design

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Helical Piles

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