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Author(s): Joana Cruz
Eduardo Manuel Fortunato
António Joaquim Pereira Viana Da Fonseca
Paulo Barros
Title: Mechanical characteristics of lime treated soil used on road subgrade layers in Portugal - two case studies
Issue Date: 2009
Abstract: The lime treatment of soils is a well recognized solution for road construction due to its great potential. Nevertheless, it requires preliminary studies to determine the optimal mix formulation and a thorough quality control during application.This paper presents and analyse some results obtained during mechanical characterization of road subgrade layers consisting of lime treated soils. Those tests were performed during the construction of two major highways in Portugal.The load tests performed and the back analysis of their results enable the evaluation of the lime treated soil layer deformation modulus. The values obtained in this way were significantly above the minimum values required by technical specifications of these works. In this way, a possible optimisation of soil lime application can be performed, either by changing the mix formulation based on in situ quality control results or by reducing the pavement thickness according to the subgrade deformation moduli measured in situ.
Subject: Geotecnia, Engenharia civil
Geotechnics, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
Document Type: Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Livro de Atas de Conferência Internacional

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