Publications

Export 57 results:
Sort by: Author Title Type [ Year (Desc)]
2011
Punching Research at Universidade Nova de Lisboa, a Ramos, Lúcio V., Faria D., and Inácio M. , Design Of Concrete Structures and Bridges Using Eurocodes, Bratislava, (2011) Abstract

n/a

Sistemas de Reforço de Lajes Fungifirmes, Faria, Duarte, Lúcio Válter, and Ramos António , SILE2011 -Seminário Internacional sobre Ligações Estruturais, Lisbon, p.1–10, (2011) Abstract

n/a

Strengthening of flat slabs with post-tensioning using anchorages by bonding, Faria, Duarte M. V., Lucio Valter J. G., and Ramos Pinho A. , Engineering Structures, Volume 33, Number 6, p.2025–2043, (2011) AbstractWebsite

This work aims to study a new flat slab strengthening technique based on post-tensioning with anchorages by bonding using an epoxy adhesive. The main advantages of this technique over the traditional prestress strengthening systems that use mechanical anchorages are that it does not need external permanent anchorages, meaning that the forces are introduced into the concrete gradually instead of being localized, thereby preserving aesthetics and useable space. The seven tested slab models show that this technique meets its objective as it is able to reduce reinforcement strains at service loads by up to 80{%} if the strengthening technique is applied in two directions and slab deformations by up to 70{%}, consequently making crack widths smaller. It can also increase punching load capacity by as much as 51{%} when compared to non-strengthened slabs. The results are compared with the EC2 (2004) [20], ACI 318-08 (2008) [23] and MC2010 (2010) [21] provisions. The main conclusions are that this strengthening technique is effective regarding ultimate and serviceability states and that it represents an advance in RC slab strengthening techniques. ?? 2011 Elsevier Ltd.

2010
Bond Behaviour of Prestress Steel Strands Bonded with an Epoxy Adhesive and a Cement Grout for Flat Slab Strengthening Purposes – Experimental Study, Faria, Duarte, Ramos António, and Lúcio Válter , 3rd fib International Congress - 2010, Washington, p.1–10, (2010) Abstract

n/a

Punching of reinforced concrete slabs and experimental analysis and comparison with codes, Faria, Duarte, Biscaia Hugo, Lúcio Válter, and Ramos António , IABSE-Fib Codes in Structural Engineering – Developments and Needs for International Practice, Dubrovnik, p.1–10, (2010) Abstract

n/a

2009
Strengthening of reinforced concrete flat slabs using post-tensioning with anchorages by bonding, Faria, D. M. V., Lúcio V. J. G., and Ramos A. M. P. , Fib symposium–concrete: 21st century superhero, London, London, (2009) Abstract

n/a

2008
Reforço de Lajes Fungiformes – Anomalias, Causas e Soluções, Lúcio, Válter, Ramos António, and Faria Duarte , SILE2008 – Seminário Internacional sobre Ligações Estruturais, Lisbon, p.1–10, (2008) Abstract

n/a