Subleitos

Subleitos, also known as underlayers or subbase layers, are a critical component of pavement structures in civil engineering. They are situated directly beneath the base layer and above the subgrade, which is the natural soil foundation. The primary function of a sublet is to provide structural support and distribute traffic loads more effectively to the subgrade. This load distribution helps to prevent excessive deformation and stress on the underlying soil, which can lead to premature pavement failure.

The material used for sublets typically consists of granular aggregates, such as crushed stone, gravel, or recycled materials. These aggregates are chosen for their strength, stability, and drainage characteristics. The thickness of the sublet layer is determined by factors such as the expected traffic volume and load, the strength of the subgrade, and the climate. Proper compaction of the sublet material is essential to achieve the required density and stability.

In addition to load support, sublets also play a role in pavement drainage. The granular nature of the sublet allows water to pass through, preventing it from accumulating and weakening the subgrade or base layer. This is particularly important in areas with high rainfall or frost susceptible soils. By effectively managing water, sublets contribute to the overall durability and longevity of the pavement. The performance of a pavement is heavily reliant on the quality and construction of its sublet layer.