In soil mechanics, what does a high activity value indicate about the soil?
Understand the Problem
The question is asking about the implications of a high activity value in soil mechanics, specifically what it indicates regarding the soil's behavior under moisture conditions. This is a knowledge-based question that pertains to the study of soil properties.
Answer
A high activity value means high volume change with moisture variation, signifying potential swelling and shrinkage.
A high activity value indicates that the soil shows significant volume changes with variations in moisture content. This means the soil is more susceptible to swelling and shrinking, leading to higher compressibility and potential chemical reactivity.
Answer for screen readers
A high activity value indicates that the soil shows significant volume changes with variations in moisture content. This means the soil is more susceptible to swelling and shrinking, leading to higher compressibility and potential chemical reactivity.
More Information
Soils with high activity have a high plasticity index relative to their clay content, making them expansive and potentially problematic for construction. These soils react significantly to moisture changes, making them a critical consideration in geotechnical engineering.
Tips
A common mistake is failing to account for the significant impact of moisture content variations on high-activity soils in construction planning.
Sources
- Activity Of Soil - Soil Mechanics - Civil Engineering - elementaryengineeringlibrary.com
- Atterberg Limit - ScienceDirect Topics - sciencedirect.com
- Atterberg limits - Wikipedia - en.wikipedia.org
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