EESB04H3 Lecture 8: Lecture 8
Document Summary
When filling, small ones fill first then large ones. y tensiometer. y saturates means tension is 0. y when wetter, matric suction goes down. y. In order for water to leave soil matric, air needs to get in there and push it out. Not going to drain until air gets in and can push it out. This is visible in well sorted types of soil like sand. y once air is out, volumetric moisture content goes up. y to get last part of water, its hard. y clay isn t well sorted. Air entry but not quantified this way. y non-linear relationship and different for different soils. y porosity and permeability is different y clay is porous. y effective porosity includes conductivity of these pores with one another. Less effective and not well interconnected meaning you cannot move stuff easily. y hygroscopic: permanently attached to outer edge of piece of soil.
