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2 cards from this section. Quick, good the night before a test.
What is dry unit weight?
Think about what is left when we remove water from the soil sample.
What does moisture content express?
Consider how to compare water and dry soil mass.
What does dry unit weight specifically exclude?
Consider what remains when you take out water from soil.
True or False: Moist unit weight increases as moisture content increases.
Think about adding water to a dry sample.
Calculate the necessary water to add to a soil sample with dry unit weight 16 kN/m³, moisture content 10%, and saturated unit weight 20 kN/m³.
Don’t forget the formula connecting these weights.
Given a soil with a porosity of 0.4 and bulk density of 1600 kg/m³, derive its specific gravity and void ratio.
Begin with understanding the relation of porosity to void ratio.
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