Soil Mechanics OR Geotechnical Engineering :- Introduction
- Father of soil Mechanics :- Dr.Karl Terzaghi
- Study of Soil is Called :- Pedology
- The process of formation of soil is termed as :-
Pedogenesis
1. Scope of Soil Engineering :-
- Foundation engineering, Retaining structure, stability of slopes,
underground structure, pavement Design, Earth Dam, Canal construction, etc.
2. Origin of Soil :-
- Soil is formed by weathering of Rocks.
Residual soils ( or Sedentary soil ):-
- Residual soils are found at the same location where they have been formed.
Transported Soils :-
- When a soil has seen deposited at a place away from the place of its
origin, it is called a Transported soil.
3. Formation of soils
(i) Physical Disintegration
(ii) Chemical Decomposition
I. Physical Disintegration :-
a. Temperature Changes ( Thermal expansion )
b. Frost
c. Growth of plants roots
d. Abrasion ( Splitting action of wind, air, ice, etc. )
e. Seismic vibration ( Earthquake )
f. Animals ( Bore Hole, Boring )
II. Chemical Decomposition :-
a. Hydration [ Reaction with H2O (Hydrogen oxide) ]
b. Carbonation [ Reaction with CO2 (Carbon dioxide) ]
c. Oxidation :- [ oxidation occurs when oxygen ions combine with
minerals in rocks. ]
d. Leaching Action [ Reaction with Acids ]
e. Hydrolysis :- [ It is a chemical process in which water gets
dissociated into H+ and OH- ions. ]
- [ The Hydrogen Cations replace the metallic ions such as
calcium, sodium and potassium in rock minerals and soil are formed with a new
chemical decomposition. ]
📌Soil Mechanics Notes till now :- 📄 👈 Click
Complete Soil mechanics Notes :- update soon...