17. Chemical Modification or Stabilization
Chemical modification and stabilization of soil significantly alters its index properties through the addition of materials such as cement and lime. The primary mechanisms of change include increases in particle size and moisture binding. Proper criteria for selecting these chemicals based on soil properties, as well as quantifiable strength gains required for effective stabilization, are crucial for successful application.
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What we have learnt
- Chemical additions can enhance soil stability by increasing particle size and facilitating moisture binding.
- The effectiveness of stabilization methods is quantified through specific strength gain measures.
- Appropriate chemical selection is critical and should be based on the index properties of the soil.
Key Concepts
- -- Chemical Stabilization
- The process of modifying soil properties by introducing chemical agents to improve strength and durability.
- -- Strength Gain
- The increase in unconfined compression strength of treated soil samples, indicative of the effectiveness of the stabilization method.
- -- Moisture Binding
- The ability of modified soil to absorb and retain moisture, which contributes to enhanced compaction and stability.
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