Objective In unsaturated soils, pores are filled partly by water and partly by air. Unsaturated soils occur naturally (as superficial ground above the water table) or in manmade structures (as compacted earth in infrastructure embankments, underground nuclear waste repositories and flood defences). Unsaturated soil mechanics has experienced significant advances during recent years, instigated by the use of compacted earth as sustainable building material and by the pressing need of the construction industry to improve techniques for management and appraisal of earth structures. Seminal contributions to unsaturated soil mechanics have been made over the past two decades but the current state-of-the-art is still unable to provide an accurate understanding of pre-failure behaviour in compacted soils, which is crucial to ensure long-term serviceability and cost-effective maintenance of earth structures. Mechanical non-linerarity and dependency of small strain stiffness, as well as damping, on stress history are important properties not properly described by existing constitutive models.Understanding the response of compacted soils at small strains is not only central to applications in engineering dynamics, such as predicting ground motion during earthquakes or next to high-speed railways, but also to the analysis of earth structures under static loads of service. The proposed project will contribute to fill such gaps of knowledge by pursuing two intertwined lines of investigations. Firstly, it will undertake a wide-ranging testing programme on samples compacted both in the laboratory and in-situ following standard procedures to ensure comparable material fabrics. Secondly, it will validate a constitutive model capable of describing mechanical behaviour from small to large strains and finally it will implement the model in a finite element code to analize the behaviour on an earth structure under service and failure conditions and compare simulation results with field monitoring. Fields of science engineering and technologycivil engineeringstructural engineering Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) FP7-PEOPLE-2011-CIG - Marie-Curie Action: "Career Integration Grants" Call for proposal FP7-PEOPLE-2011-CIG See other projects for this call Funding Scheme MC-CIG - Support for training and career development of researcher (CIG) Coordinator UNIVERSITA DEGLI STUDI DI NAPOLI FEDERICO II EU contribution € 50 000,00 Address CORSO UMBERTO I, 40 80138 Napoli Italy See on map Region Sud Campania Napoli Activity type Higher or Secondary Education Establishments Administrative Contact Claudio Mancuso (Prof.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data
