Study of an embankment of the A10 Motorway built with marls
DOI:
https://doi.org/10.14195/2184-8394_123_1Keywords:
Marl embankment, Suction, Modelling, Lime treatmentAbstract
An embankment of the A10 Motorway (Arruda dos Vinhos/Carregado) built with a core of compacted marls and shoulders with marls treated with lime, was the object of a research project. The main purpose of the study was to predict the deformations of the embankment due to the weathering of the marls (mainly wetting due to rain). Suctions and deformations were measured in the embankment during and after its construction. A constitutive model for unsaturated soils was adopted in the calculation. The parameters for the model were obtained with experimental tests. The settlements calculated during the construction were very similar to those measured in the embankment. The deformations due to wetting were not relevant. The calculated stresses in the contacts core-shoulders led to the conclusion that it is not expected relevant cracking due to different stiffness of the core and shoulders.
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