António Roque

Dr. António Roque

Laboratório Nacional de Engenharia Civil (LNEC)
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Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 May 2021 in Sustainability
Verified
Journal Article
Open access
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SHSarah Hale
Sarah Hale
ARAntónio Roque
António Roque
GOGudny Okkenhaug
Gudny Okkenhaug
ESErlend Sørmo
Erlend Sørmo
TLThomas Lenoir
Thomas Lenoir
BŽBojan Žlender
Bojan Žlender
The construction and demolition of infrastructure can produce a surplus of excavated soils that ends up at landfills. This practice is not sustainable, and approaches are needed to reduce soil waste and minimize environmental and human health hazards. The “Reuse of urban soils and sites” Working Group in the European Large Geotechnical Institute Platform (ELGIP) works towards a safe and resource efficient use of excavated soils for construction. By considering relevant literature and practicals based on experience in the participating ELGIP countries (France, Norway, Portugal, Slovenia and Sweden), this study presents current practice related to the reuse of excavated soils, and the main barriers (regulatory, organizational, logistical and material quality) to effectively reuse them. Results show that there is no consensus on the best strategies to manage excavated soils in urban areas. This paper provides suggestions of ways in which stakeholders can increase reuse of excavated soils.
16 December 2019 in Road Materials and Pavement Design
Verified
Journal Article
Closed access
Cristina FreireCristina Freire
Cristina Freire
José NevesJosé Neves
José Neves
ARAntónio Roque
António Roque
Isabel Milagre MartinsIsabel Milagre Martins
Isabel Milagre Martins
MAMaria de Lurdes Antunes
Maria de Lurdes Antunes
The assessment of performance is vital to ensure confidence in recycled materials. This paper presents a technical and environmental feasibility study of using reclaimed asphalt pavement (RAP), processed by milling and crushing, in pavement unbound granular layers. An experimental programme was undertaken to address the geometrical, physical, mechanical and environmental properties. The crushed RAP showed the best performance whereas milled RAP has had to be mixed with a natural aggregate to improve its properties. The laboratory and lysimeter leaching tests indicated that RAP does not pose environmental risk. The overall results highlighted the viability of using both RAP types for the aforementioned purpose.
24 August 2022 in Journal of Material Cycles and Waste Management
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Journal Article
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ARAntónio Roque
António Roque
PSPaula F. da Silva
Paula F. da Silva
RARui Pedro Marques de Almeida
Rui Pedro Marques de Almeida
1 June 2020 in Journal of Material Cycles and Waste Management
Verified
Journal Article
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ARAntónio Roque
António Roque
GRGonçalo Manuel Rodrigues
Gonçalo Manuel Rodrigues
PSPaula F. da Silva
Paula F. da Silva
21 November 2014 in Geotecnia
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Journal Article
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GRGonçalo Rodrigues
Gonçalo Rodrigues
ARAntónio Roque
António Roque
PSPaula F. da Silva
Paula F. da Silva
A valorização de resíduos em obras de engenharia civil representa uma importante vantagem ambiental e económica. Neste contexto, contribui-se com a avaliação da viabilidade técnica da aplicação de um agregado reciclado de betão britado – ABRCD, resultante do processamento de resíduos de construção e demolição – RCD, e de um agregado siderúrgico inerte para a construção – ASIC, processado a partir de escórias de aciaria de forno de arco elétrico – FAE, na construção da camada de drenagem e recolha dos lixiviados existente nos aterros de resíduos. No artigo apresentam-se e analisam-se os resultados do estudo da durabilidade dos dois agregados reciclados em contacto com água e com um lixiviado recolhido num aterro de resíduos sólidos urbanos. Nesta avaliação foi relevante o comportamento observado com dois agregados naturais, o basalto – BAS e o calcário – CAL. Conclui-se que, nas condições de ensaio adotadas e numa perspetiva de durabilidade, os dois materiais apresentam comportamento que perspetiva a sua reciclagem na construção da referida camada, bem como em obras geotécnicas e infraestruturas de transporte em geral.
1 August 2023 in Environmental Geotechnics
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Journal Article
Closed access
ARAntónio Roque
António Roque
Vitor MonteiroVitor Monteiro
Vitor Monteiro
For 12 years, in Portugal, a waste deposit was in contact with the underlying ground. The waste, fly ash, was produced by electric arc furnaces of the Portuguese Iron and Steel Company. The subsoil consisted of waste rock spoils from an old coal mine site. The waste was transported to the site as part of a recovery operation. At the time of the operation, the waste was classified as ‘inert’. Site investigations performed later showed that the waste was hazardous. The waste mainly consisted of high concentrations of lead and petroleum hydrocarbons, and there was no containment structure to confine the waste, which put local public health and the environment at risk. It was therefore recommended that the waste be moved to a hazardous waste landfill. In this paper, the methodology used to study the waste disposal is presented, followed by the methodology adopted for the reclamation of the site. Firstly, the deposited waste was excavated and the remediation of the subsoil was performed by removing contaminated soil areas, whose depth did not exceed 0.75 m. Then, an on-site reuse operation was carried out by backfilling the natural soil that was covering the waste deposit.