This document discusses different types of soil structures: 1. Coarse-grained soil structures include single grained structures where particles are deposited by gravity and honeycomb structures formed by fine sand particles. 2. Clay soil structures include flocculated structures formed by clay particle contact and dispersed structures formed by remolding. 3. Mixed soil structures include coarse-grained skeleton structures with bulky particles and clay matrix structures with more clay than coarse particles.

1. • N A M E – P R A B H AT S H A N K A R S H A R M A
• B R A N C H – C I V I L
• M O B . – ( 9 7 8 2 3 1 8 3 7 8 )
• F O L L O W O N –
H T T P : / / W W W . S L I D E S H A R E . N E T / P R A B H AT S H A R M A 7
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SOIL STRUCTURES

2. SOIL STRUCTURES:-
• The word soil is derived from the latin word “solium”,which
means the upper layer of the earth which may be dug or
plowed.
• The geometrical arrangement of the soil particles with respect
to each other is known as soil structures.

3. •Single grained structures
•Honey comb structures
•Flocculated structures
•Dispersed structures
•Coarse grained skeleton
•Clay matrix structures

4. 1.COARSE GRAINED SOIL STRUCTURES:-
• 1) Single grained structure:- soil particles deposited due to
force of gravity ,void ratio for loose and dense state will be
0.35 - 0.90

5. • 2)Honey-comb structures:- formed by cohesive soils such as
fine sand of particle size 0.002 to 0.02mm, when deposited
they form particle to particle contact and bridges over large
voids in the soil mass.
Void
space

6. CLAY SOIL STRUCTURES:-
• 1)Flocculated structures:- formed by the clay particles, by
forming inter-particle contact between +ve charged edges &-
ve charged surface.
-
ve+
-
ve
+
+
+

7. • 2)Dispersed structures:- formed by remoulding ,which
converts edge-to-face orientation to face-to-face orientation.

8. MIXED SOIL STRUCTURES:-
• 1)Coarse-grained skeleton:-
Bulky particles > clayey particles

9. • 2)Clay matrix structures:- more stable than ordinary clay
deposited structures
clay particles > coarse particles

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