18 Difference Between Compaction and Consolidation | What Is Compaction | What Is Consolidation
Table of Contents
What Is Compaction?
compaction of soil is area compacted by the mechanical method to remove air voids in compacted soil this area of soil called compaction.
What Is Consolidation?
Consolidation is the compaction of soil by the expulsion of water from voids of the soil.
Consolidation is a process by which soils decrease in volume. According to Karl von Terzaghi “consolidation is any process which involves a decrease in water content of saturated soil without replacement of water by air.”
Compaction Vs. Consolidation
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| Sr.No. | Compaction | Consolidation |
| 1 | Compaction is a quick process. | Consolidation is a slow process. |
| 2 | Compaction is the compression of soil by the expulsion of air from the voids of the soil. | Consolidation is the compression of soil by the expulsion of water from the voids of the soil. |
| 3 | It is a process where mechanical pressure is used to compress the soil mass for the purpose of soil improvement. | It is a process where steady and static pressure causes compression of saturated soil. |
| 4 | Dynamic loads by rapid mechanical methods like vibration, damping, and rolling are applied for a small interval in soil compaction. | Static and sustained loading is applied for a long interval in soil consolidation. |
| 5 | The compaction process can be completed immediately. | Consolidation is a slow and steady process that takes time. |
| 6 | Compaction is an instantaneous process of reduction of volume of voids. | Consolidation is a time-dependent process of reduction of volume. |
| 7 | Compaction is an artificial process. | Consolidation is a natural process. |
| 8 | Compaction can be done before the construction. | It can not be done before the construction. There are some methods by which consolidation can be done before construction but 100% consolidation cannot be achieved. |
| 9 | Compaction is done to attain maximum dry density at optimum moisture content. | loading period is long. It may take many years for 100% consolidation. |
| 10 | All kind of soil whether it is cohesive or noncohesive can be compacted. | Consolidation occurs naturally due to the structural load from the foundation. |
| 11 | Compaction of soil is mainly used for sandy soil. | The consolidation of soil is mainly used for clayey soil. |
| 12 | Compaction is intentionally done to produce a high unit weight of soil and consequently improve other soil properties. | Consolidation is a natural process where soil below the building and other structures compacted by the transferred load to the soil through the provided foundation system. |
| 13 | The foundation settlement will be reduced. | Consolidation is the responsibility of the foundation settlement. |
| 14 | The soil should be at OMC (Optimum Moisture Content ) | The soil is saturated to settle down the particles. |
| 15 | The bearing capacity of soil will increase. | Also, increase the bearing capacity of soil |
| 16 | The compaction Loading period is short. | Consolidation applies only for cohesive soils, especially for low permeable clay. |
| 17 | Compaction is a stage process. | Consolidation is a two-stage process that is Primary consolidation and Secondary consolidation. |
| 18 | Compaction is the primary process. | Consolidation starts after compaction. |
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Difference Between Compaction and Consolidation
Compaction is the compression of soil by the expulsion of air from the voids of the soil. Consolidation is the compression of soil by the expulsion of water from voids of the soil. It is a quick process. Consolidation applies to cohesive soils only especially for low permeable clay.
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