Print Email Facebook Twitter Performance of C&DW materials for road applications validated by field monitoring Part of: HISER International Conference 2017· list the conference papers Title Performance of C&DW materials for road applications validated by field monitoring Author Neves, J. Freire, A.C. Roque, A.J. Martins, I.M. Antunes, M.L. Date 2017-06-21 Abstract SUPREMA – Sustainable Application of Construction and Demolition Recycled Materials in Road Infrastructures was a research project developed by the Laboratório Nacional de Engenharia Civil (LNEC), in cooperation with the University of Lisbon (IST). The use of recycled materials has major environmental and economic benefits. Its recycling contributes for a more sustainable construction and rehabilitation of road pavements. The main goals of this project were to achieve a deeper knowledge on recycled materials and correspondent technologies and to increase the confidence of road agencies and construction companies for its application in road pavements. The objective of the paper is to analyse the mechanical performance of recycled aggregates, from construction and demolition waste (C&DW), used in unbound granular layers and evaluated on experimental sections of asphalt pavements. Four sections were instrumented with strain gauges and load cells. The recycled aggregates used in these sections were: crushed concrete, crushed mixed concrete and crushed and milled reclaimed asphalt pavement (RAP). A crushed natural limestone aggregate was used in one section as a reference material. The sections were submitted to in situ load tests performed by the Falling Weight Deflectometer (FWD). In addition, an extensive program of laboratory tests was also performed related to geometrical, physical, mechanical, chemical and environmental characteristics. This paper presents the mechanical behaviour of aggregate layers obtained from the backanalysis of FWD tests results and from the instrumentation measurements. In general, it was concluded that stiffness of unbound granular layers with recycled aggregates could be considered equivalent to the stiffness of layers constructed by natural aggregates. Results of resilient modulus obtained for the studied recycled aggregates could be useful for pavement design purposes. Subject roadpavementC&DWrecyclingperformance To reference this document use: http://resolver.tudelft.nl/uuid:da2a3d27-8bf5-432d-8d54-71a89cf88793 Part of collection Conference proceedings Document type conference paper Rights (c) 2017 The Author(s) Files PDF Performance of C&DW mater ... field.pdf 113.86 KB Close viewer /islandora/object/uuid:da2a3d27-8bf5-432d-8d54-71a89cf88793/datastream/OBJ/view