stabilization
DESCRIPTION
i do not own this presentation. For educational purposes only.TRANSCRIPT
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SOIL STABILIZATIONSOIL STABILIZATION
By: Jeric Paraso
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What is Soil Stabilization?
DEFINITION:
Chemical or mechanical treatment designed to increase the stability of a soil mass and improve its engineering properties.
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PURPOSE OF SOIL STABILISATION:
*strength improvement
*Dust control
*Soil waterproofing
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SOIL STABILIZATION TECHNIUES
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1) PHYSICAL TECHNIQUES
*Compaction *Altering size distribution
*Drying
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A) COMPACTION
*Increases density
*Increases strength
*Reduces permeability
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B) ALTERING SIZE DISTRIBUTION:
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C) DRYING:
*Performance of soil can be greatly improved by drying in sun or oven
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2) PHYSIC0-CHEMICAL TECHNIQUES
Combination of chemical & physical reactions.
Materials known as stabilizers: Lime
Cement
Bitumen
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LIME STABILIZATION PROCEDURE.
•Pulverization and scarification •Lime content
•Uniformity of mixing
•Compaction
•curing
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LIME-SOIL STABILIZATION USES
* Improve the workability and load-bearing characteristics of soil.
* Used to dry wet soils at construction site.* can substantially increase the stability,
impermeability, and load-bearing capacity of the sub-grade.
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Lime
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CEMENT STABILIZATION PROCEDURE •Pulverization •Cement content
•Moisture content
•Uniformity of mixing
•Compaction
•Curing.
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CEMENT-SOIL STABILIZATION USES
•Cement stabilized soils usually stronger than lime stabilized soils.
•Similar uses to lime stabilized soils.
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Portland Cement
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BITUMINOUS STABILIZATION:
Refers to a process by which a controlled amount of bituminous material is thoroughly mixed with an existing soil or aggregate material to form a stable base or wearing surface.
Bitumen increases the cohesion and load-bearing capacity of the soil and renders it resistant to the action of water.
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Benefits of Bituminous Stabilization
• • Improvements to the driving surface and in safety
• • Virtual elimination of dust problems • • Reduction in the loss of aggregate
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Potential Disadvantage to Bituminous Stabilization
• • Potential to induce higher driving speeds and thus, potentially dangerous curves in existing geometry.
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Soil Stabilization Equipment
Spreader
Soil Mixers
Compactors
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Spreaders
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Spreaders
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Spreaders
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Soil Mixers
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Soil Mixers
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Soil Mixers
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Compactors
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Compactors
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Compactors