Question
Download Solution PDFWhich of the following properties should the subgrade soil have in order to be used as highway material?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Subgrade soil is the foundation layer for highway construction, and it plays a crucial role in supporting the layers above it, such as the base course and the pavement. The properties of subgrade soil are critical for the durability and performance of the highway. The key properties required for subgrade soil are:
- Stability: The subgrade must provide a stable foundation to support the loads imposed by traffic without undergoing significant deformation. Stability ensures that the highway remains even and safe for use over time.
- Incompressibility: The subgrade soil should be incompressible to prevent settlement or subsidence under the weight of the traffic loads. Incompressibility helps maintain the structural integrity of the highway.
- Good Drainage: Effective drainage is essential to prevent water accumulation within the subgrade, which can weaken the soil and lead to issues like frost heave or reduced load-bearing capacity. Good drainage ensures that the subgrade remains dry and maintains its strength.
Last updated on May 28, 2025
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