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The construction of the South Stretch of Rodoanel Highway created a comotion in the geotechnical segment, generating new information about the local soils and presenting new construction technology, already available in other markets, but still with very limited or even no use in the Brazilian works. This new technichs of soil improvements, promises to solve important issues, like deformability and resistence of a soft clay layer located at the foundation of an embankment, by means that can be qualified as simple, fast, economical and environmentaly interesting. This document presents the geothechnical engineering issues encountered during the implantation of this enterprenuer, at the region near Billings Reservoir and at the intersection with Imigrantes Highway, and points out the geothechnical solutions used to stabilize the foundation of compacted fill builted at this region, that is characterized by the occurence of very soft organic soils. This study enphasises in the solutions of treatment of soft soil identified as Deep Radial Consolidation (CPR) and the Mechanical Mixture of Cementitius Binder with the local saturated soft soils. The final performance of this technologies, conserning the gain of resistence and the reduction of deformability, aquired by the threated layer, were evaluated through field tests and by the instrumentation placed at the area of interest.

Estudo de algumas soluções de tratamento de solos moles para construção de aterros no Trecho Sul do Rodoanel - SP.