Soil classification

Question 1

Main paragraph

Answer 1

subordinate fraction, major fraction, minor fraction, colour, structure

Question 2

colour

Answer 2

Indicates mineralogical composition, weathering, and moisture conditions

Question 3

structure

Answer 3

Fabric and composition of deposits, Continuity of deposits, Influences behaviour of the overall deposit

Question 4

Classification Categories Coarse Grained Soil

Answer 4

Grading, Shape, Strength, Weathering, Relative Density/Packing of particles, Coarse

Question 5

shape

Answer 5

Roundness, Sphericity, Can influence the interaction between particles

Question 6

Classification Categories Fine Grained

Answer 6

Strength, Plasticity, Sensitivity
Dilatancy test will define whether soil is dominated by silt, Atterberg Limits and Plasticity Chart

Question 7

plasticity

Answer 7

Degree to which soil can be remoulded without cracking. High plasticity clays will be very hard when dry, low plasticity clays crumble when dry.

Question 8

Sensitivity

Answer 8

Degree to which strength is lost when remoulded

Question 9

Classification Categories Organic Soils

Answer 9

type, rootlets, carbonaceous