Uni Academia

Seepage characteristics of core rockfill dam foundation with double cutoff walls in deep overburden: A case study
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UNDERSTANDING ROAD LAYERS

Every strong and durable road you drive on rests on a powerful structure beneath, not just asphalt!

Here’s the breakdown

1. Pavement (Surface Layer):
This is the visible top layer made of asphalt or concrete providing a smooth, safe, and waterproof surface for vehicles.

2. Base Course:
The load distributor! It transfers traffic loads from the surface to the lower layers. Usually made of crushed stones or gravel.

3. Sub-base:
Acts as a cushion and improves drainage. It reduces stress on the subgrade and prevents pumping of fine materials.

4. Subgrade:
The foundation of the entire pavement system made up of compacted natural soil. Its strength and stability determine the performance of the whole road.

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