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WHAT IS COMPACTION?
Page 3


WHAT IS COMPACTION? DEFINATION 
OF  COMPACTION
The densification of soil by the application of mechanical 
energy is known as compaction
?2 >   ?1
?1=W1 ?V1
?2=W1/V2
Page 4


WHAT IS COMPACTION? DEFINATION 
OF  COMPACTION
The densification of soil by the application of mechanical 
energy is known as compaction
?2 >   ?1
?1=W1 ?V1
?2=W1/V2
REQUIREMENT OF SOIL
COMPACTION
To increase 
soil strength
To improve 
the stability 
of soil
To reduce soil 
permeability
To reduce 
erosion 
damage 
Page 5


WHAT IS COMPACTION? DEFINATION 
OF  COMPACTION
The densification of soil by the application of mechanical 
energy is known as compaction
?2 >   ?1
?1=W1 ?V1
?2=W1/V2
REQUIREMENT OF SOIL
COMPACTION
To increase 
soil strength
To improve 
the stability 
of soil
To reduce soil 
permeability
To reduce 
erosion 
damage 
FACTOR AFFECTING 
COMPATION
WATER CONTENT
COMPACTING EFFORT
TYPE OF SOIL 
METHOD OF COMPACTION
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FAQs on PPT: Soil Compaction - Soil Mechanics - Civil Engineering (CE)

1. What is soil compaction in civil engineering?
Ans. Soil compaction in civil engineering refers to the process of increasing the density of soil by reducing the air voids within it. This is done to improve the soil's strength, stability, and load-bearing capacity.
2. Why is soil compaction important in civil engineering projects?
Ans. Soil compaction is important in civil engineering projects because it helps to prevent settlement, improve the bearing capacity of the soil, and enhance the stability of structures. It ensures that the soil can adequately support the loads imposed by buildings, roads, and other infrastructure.
3. What factors contribute to soil compaction?
Ans. Several factors contribute to soil compaction, including the type and composition of the soil, moisture content, compaction energy, compaction equipment used, and the number of passes made over the soil surface. These factors determine the level of compaction achieved and its effectiveness.
4. How does soil compaction affect plant growth and agriculture?
Ans. Soil compaction can have negative effects on plant growth and agriculture. Compacted soil restricts root development, limits water infiltration and drainage, reduces nutrient availability, and hinders soil aeration. These factors can lead to stunted plant growth, decreased crop yield, and increased susceptibility to diseases.
5. What are the common methods used for soil compaction in civil engineering?
Ans. Common methods used for soil compaction in civil engineering include mechanical compaction using heavy rollers or compactors, dynamic compaction using vibrating equipment, and soil stabilization techniques such as adding lime or cement to the soil. The specific method chosen depends on the project requirements and soil conditions.
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