Publications de Julia De Castro San Roman Fest

Long-term design of GFRP-PUR web-core sandwich structures

Thomas Keller, Julia De Castro San Roman Fest, Sonia Yanes Armas

2018

Integration of dye solar cells in load- bearing translucent glass fiber- reinforced polymer laminates

Thomas Keller, Julia De Castro San Roman Fest, Andreas Schueler, Carlos Pascual Agullo

The encapsulation of dye solar cells in translucent, structural and lightweight glass fiber-reinforced polymer laminates was investigated with a view to designing multifunctional envelopes for daylit buildings. Small and large integrating sphere experiment ...

SAGE Publications2017

Long-term design of FRP-PUR web-core sandwich structures in building construction

Thomas Keller, Julia De Castro San Roman Fest, Sonia Yanes Armas

The structural behavior of GFRP-polyurethane (PUR) web-core sandwich structures subjected to sustained loading was investigated. As a basis, a study of the mechanical behavior of rigid PUR foams used as core materials was conducted, with emphasis on creep. ...

Elsevier2017

Rotational stiffness of web-flange junctions of pultruded GFRP decks

Thomas Keller, Julia De Castro San Roman Fest, Sonia Yanes Armas

The rotational behavior of the web-flange junctions (WFJs) of a pultruded glass fiber-reinforced polymer (GFRP) bridge deck system with trapezoidal cell cross-sectional geometry was investigated. The rotational response of three WFJ types, in two bending m ...

Elsevier2017

Aramid/glass fiber-reinforced thermal break - thermal and structural performance

Thomas Keller, Kyriaki Goulouti, Julia De Castro San Roman Fest

Energetically weak points in thermally insulated building envelopes are formed by thermal breaks that are implemented to structurally connect external balconies to internal slabs. Current thermal breaks comprise stainless steel bars that penetrate the insu ...

Elsevier2016

System transverse in-plane shear stiffness of pultruded GFRP bridge decks

Thomas Keller, Julia De Castro San Roman Fest, Sonia Yanes Armas

The static transverse behavior of two pultruded GFRP deck systems with trapezoidal (DS) and triangular (AS) cell cross-sectional geometry was experimentally investigated in order to study their transverse in-plane shear stiffness. Symmetric three-point ben ...

Elsevier2016

Aramid/glass fiber-reinforced thermal break - Structural system performance

Thomas Keller, Kyriaki Goulouti, Julia De Castro San Roman Fest

Energetically critical points in thermally insulating building envelopes are caused by penetrations of building interior concrete slabs through the envelope insulation layers to create external balconies. A new highly insulating balcony thermal break eleme ...

Elsevier2016

Effect of Natural Weathering on Durability of Pultruded Glass Fiber-Reinforced Bridge and Building Structures

Thomas Keller, Anastasios Vassilopoulos, Julia De Castro San Roman Fest, Nikolaos Alexandros Theodorou

After 17 and 15years of use, respectively, a detailed inspection of a pedestrian bridge and a 5-story building structure composed of partly adhesively bonded pultruded glass fiber-reinforced polymer (GFRP) profiles was conducted accompanied by full-scale s ...

American Society of Civil Engineers2016

Energy dissipation and recovery in web-flange junctions of pultruded GFRP decks

Thomas Keller, Julia De Castro San Roman Fest, Sonia Yanes Armas

The energy dissipation capacity resulting from progressive cracking and the recovery after unloading of the web-flange junctions (WFJs) of a pultruded GFRP deck were experimentally investigated. Web-cantilever bending experiments up to failure were perform ...

Elsevier2016

Optically-derived mechanical properties of glass fiber-reinforced polymer laminates for multifunctional load-bearing structures

Thomas Keller, Anastasios Vassilopoulos, Julia De Castro San Roman Fest, Andreas Schueler, André Gabriel Kostro, Carlos Pascual Agullo

This paper demonstrates how the translucency of glass fiber-reinforced polymer (GFRP) laminates allows the derivation of their mechanical properties through optical measurements. Spectrophotometric, goniophotometric and tensile experiments were performed o ...

SAGE Publications2015