universidade lusófona

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Circular Materials

Circular Materials Management has revolutionized construction and infrastructure practices by prioritizing sustainability and resource efficiency. By embracing circular economy principles, we shift away from the outdated linear model of “take, make, dispose” towards a more sustainable approach. Reusing materials becomes paramount, extending their lifespan and reducing the need for virgin resources. Incorporating recycled materials into new solutions not only minimizes waste but also reduces carbon emissions associated with resource extraction and production.

Furthermore, prioritizing renewable resources in construction processes have helped to mitigate the carbon footprint of infrastructure development. By opting for sustainable alternatives such as reclaimed asphalt pavement, hemp fibres, brewery spent grains, or recycled aggregates, we lessen our reliance on finite resources while promoting environmental stewardship. These materials not only offer comparable performance but also contribute to preserving natural habitats and biodiversity.

Incorporating circular materials management practices into construction and infrastructure projects not only enhances climate resilience but also fosters economic opportunities and innovation. It stimulates the development of new recycling technologies, promotes local sourcing and production, and encourages collaboration across sectors to create closed-loop systems. Ultimately, by embracing circularity, we pave the way for a more sustainable future, where resource efficiency and environmental protection go hand in hand.

Research topic coordinator: Vítor Antunes

Main Publications

  • Antunes, V.; Neves, J.; Freire, A. C. (2023) “Could high RAP mixtures be multi-recycled? Validation through long-term performance assessment” Transportation Engineering Journal Vol. 14 (2023) pp. 100215 DOI 10.1016/j.treng.2023.100215
  • Antunes, V.; Moreno, F.; Rubio-Gámez, M.; Freire, A.C.; Neves, J. (2022) “Assessing RAP Multi-Recycling Capacity by the Characterization of Recovered Bitumen Using DSR” Sustainability Journal Vol. 14 (2022) pp. 1-17. DOI 10.3390/su141610171
  • Antunes, V.; Neves, J.; Freire, A.C. (2021) – “Performance Assessment of Reclaimed Asphalt Pavement (RAP) in Road Surface Mixtures”. Recycling Journal Vol. 6 (2021) pp. 1-19. DOI 10.3390/recycling6020032
  • Antunes, V.; Freire, A.C.; Neves, J. (2021) – “Investigating aged binder mobilization and performance of RAP mixtures for surface courses”. Construction and Building Materials Journal Vol. 271 (2021) pp. 121511. DOI 10.1016/j.conbuildmat.2020.121511
  • Vandewalle, D.; Antunes, V.; Neves, J.; Freire, A.C. (2020) – “Assessment of Eco-Friendly Pavement Construction and Maintenance Using Multi-Recycled RAP Mixtures”. Recycling Journal Vol. 5 (2020) pp. 1-21. DOI 10.3390/recycling5030017
  • Antunes, V.; Freire, A.C.; Neves, J. (2019) – “A review on the effect of RAP recycling on bituminous properties and viability of multi-recycling”.Construction and Building Materials Journal Vol. 2011 (2019) pp. 1045-1053. DOI 10.1016/j.conbuiltmat.2018.09.063
  • Pereira, L.; Freire, A.C.; Sá da Costa, M.; Antunes, V. (2018) – “Experimental study of the effect of filler on the ductility of filler-bitumen mastics”.Construction and Building Materials Journal Vol. 189 (2018) pp. 1045-1053. DOI 10.1016/j.conbuiltmat.2018.09.063
  • Antunes, V.; Simão, N.; Freire, A.C. (2017) – “A Soil-Cement Formulation for Road Pavement Base and Sub Base Layers: a Case Study”. Transportation Infrastructure Geotechnology Journal Vol. 4 (2017) pp. 126-141. DOI: 10.1007/s40515-017-0043-9
  • Antunes, V.; Freire, A.C.; Quaresma, L.; Micaelo, R. (2017) – “Evaluation of waste materials as alternative sources of filler in asphalt mixtures”. Materials and Structures RILEM Journal Vol.50 (2017) paper 254 DOI 10.1617/s11527-017-1126-3

BuildingAdapt – Pioneer study to analyse the resilience of university teaching buildings to climate change: Lusófona University – Lisbon University Center

  • Funding Institution COFAC
  • Coordinator Maria Manso
  • Team members Elói Figueiredo, João Canto, Vítor Antunes, Rúben Teixeira
  • Period of funding January 2023 to December 2024
  • Website buildingadapt.com

Climate Analytics has estimated that within 80 years maximum summer and autumn temperatures may increase up to 8ºC in Portugal. Also, in spring and winter temperatures may rise between 2ºC and 4ºC. The increase in urban temperature will have a major impact in buildings energy consumption and their occupants´ environmental comfort.
This study focuses on the growing concern about how university teaching buildings can adapt to climate change and how the environmental comfort conditions of their occupants can be guaranteed in future scenarios. Building A of Lusófona University – Lisbon University Center will be used as case study, considering the urgent needs for its rehabilitation and maintenance of its character.
The aim of this project is to identify the best rehabilitation strategies to improve occupants´ environmental comfort considering the present and future climate conditions. First, it will be created a 3D model of the building based on a 3D Point Cloud survey. Then a data acquisition system and environmental comfort sensors will be installed in Building A to monitor its thermo-hygrometric conditions along the year. This data will be used to calibrate the computational models to be developed. After, the 3D model will be used to develop computational models based on current climate conditions and future climate scenarios. Different passive design solutions will be tested within the computational models to improve the thermal performance of the buildings´ envelope. Also, carbon negative solutions, as green walls, will be analysed to enable capturing greenhouse gases over the building lifetime and promote comfort and well-being to the Campus users. At the end an optimal cost methodology will be implemented to identify the best solutions to be implemented.
The results obtain along the project will help Lusófona University – Lisbon University Center to make an informed decision on how to adapt to climate change and invest in more cost-effective rehabilitation strategies.

App4SHM – Smartphone application for structural health monitoring

Development of a smartphone application to monitor the structural health of buildings and special structures (like bridges) after catastrophic events.

This application will be able to interrogate the phone’s internal sensors, or other paired devices via Bluetooth or USB, and to analyze and compare the data collected through intelligent algorithms properly trained in order to detect damage and quantify the structural risk in real time. As it is a mobile application with access to a server, it is possible to create a networked system of several nodes through the simultaneous use of several smartphones.

This is a R&D project funded by COFAC and involving students and professors from ULHT’s civil engineering and computer science courses: Eloi Figueiredo, Hugo Rebelo, Ionut Moldovan, Luís Silva, Nuno Penim, Paulo Oliveira, Pedro Alves.

Gestão de conteúdos por Eloi Figueiredo © 2022 COFAC.