LE 1 CONCEPTS (M4 - M6) Flashcards
ratio of the mass of a unit volume of a material to the mass density of gas-free distilled water at a stated temperature
Specific Gravity
Types of Particle Size
- Coarse (Gravel, Sand)
- Fine (Silt, Clay)
This test is performed to determine the percentage of different grain sizes contained within a soil
Grain-size Analysis
Particle Size Analysis for Coarse Soil
Mechanical/Sieve Analysis
Particle Size Analysis of Fine Soil
Hydrometer Analysis
What principle is Hydrometer Analysis based on?
Principle of Sedimentation of Soil grains in water
basic measures of the nature of a fine-grained soil
Atterberg Limits
It is defined as the percentage moisture content at which a soil changes with decreasing wetness from liquid to plastic consistency or with increasing wetness from plastic to liquid consistency.
Liquid Limit
it is the percentage moisture content at which a soil changes with decreasing wetness from the plastic to the semi- solid consistency or with increasing wetness from the semi-solid to the plastic consistency.
Plastic Limit
the water content where further loss of moisture will not result in any more volume reduction.
Shrinkage Limit (SL)
Liquid Limit Device
Casagrande Liquid Limit Device
the difference between the liquid limit and the plastic limit of a soil.
Plasticity Index (PI)
the relative consistency of a cohesive soil in the natural state
Liquidity Index (LI)
existence of interconnected voids through which water can flow from points of high energy to points of low energy
Soil Permeability
Lab Determination for k of coarse-grained soils
Constant Head Test
