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Course outline | Business Communications & Ethics

Introduction A

i Soil phases

ii Properties of rocks

iii Origin of soil

Organic/inorganic

(1) Organic soil

(2) Properties of organic soil

(3) Inorganic soil

Deposition method

iv Index properties of soil

Range of particle sizes and

distribution of sizes

Atterberg’s limits

(1) Shrinkage limit

(2) Plastic limit

(3) Liquid limit

Plasticity index

Consistency

Vane shear test

Relation between unconfined

compression test and shear

strength

Thixotropy

Presence & type of clay

Activity

Swell potential

Liquidity index

Composition & Physical B

properties i Volume of voids ii Moisture content iii Void ratio iv Degree of saturation v Porosity

Soil compaction Ci Method to find out soil density

Sand cone method ii Specification of field compaction

iii Factors affecting compaction

Stresses in soil Di Types of stresses

Geostatic stress

Induced stress

Vertical stress

Horizontal stress

Settlements Ei Influence factors for vertical

displacement under flexible area

ii Consolidation

One dimensional consolidation

(1) Assumption for one-

dimension consolidation

(2) Oedometer test

(3) Compressibility

characteristics

Compressibility

coefficient of volume

Compression index

Consolidation settlement

(1) Skempton Bjerrum method

Shear strength Fi Effects of compression

Volume change Plastic flow Shear failure

ii Types of shear strength Internal friction Cohesion

iii Coulumbs’s equation: failure

theory iv Shear tests

Shear box (direct shear) test Unconfined compression test Vane shear test Internal compression test

v Mohs’s circle

Course outline | Business Communications & Ethics

Clay minerals Gi Shapes

Silicon-oxygen tetrahedron Aluminium-magnesium

octahedron ii Three layer minerals

illite

Montmorillonite

Vermicite

Table: Clay mineral-specific

surface-cation exchange

Soil classification systems Hi Classification conditions (3) ii Triangular classification soil iii Classification table iv Field identification

Particle size Amount of fines Consistency Dry strength Penetration resistance Structure of soil

Water in soil Ii Ground water investigation