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Thomas Keller

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Related publications (309)

Modeling of post-fire stiffness of E-glass fiber- reinforced polyester composites

A new model is proposed to estimate the post-fire stiffness of FRP composites after different fire-exposure times. The model considers the E-modulus recovery of the material if cooled down from temperatures between glass transition and decomposition during ...

2007

Multifunctional hybrid GFRP/steel joint for concrete slab structures

Thomas Keller, Florian Riebel

2007

Long-term performance of the Pontresina GFRP pedestrian bridge

Thomas Keller, Till Vallée, Yu Bai

2007

Modeling of thermo-physical properties for FRP composites under elevated and high temperatures

Thomas Keller, Till Vallée, Yu Bai

A decomposition model for resin in glass fiber-reinforced polymer composites (GFRP) under elevated and high temperature was derived from chemical kinetics. Kinetic parameters were determined by four different methods using thermal gravimetric data at diffe ...

2007

Material-tailored use of FRP composites in bridge and building construction

Thomas Keller

2007

Multifunctional all-GFRP joint for concrete slab structures

Thomas Keller, Florian Riebel

An existing hybrid-GFRP/steel joint for load transfer and thermal insulation in concrete slab structures was developed into an all-GFRP joint. The new joint consists of a pultruded GFRP tensile/shear element anchored through adhesively bonded ribs in the c ...

2007

Modeling of thermo-physical properties and thermal responses for FRP composites in fire

Thomas Keller, Till Vallée, Yu Bai

2007

Progressive failure process of adhesively bonded GFRP joints

Thomas Keller, Ye Zhang

2007

Multifunctional all-GFRP joint for concrete slab structures

Thomas Keller, Florian Riebel

2007

Fatigue behavior of adhesively bonded pultruded GFRP

Thomas Keller, Ye Zhang, Anastasios Vassilopoulos

Springer2007

Long-term performance of a pultruded GFRP element exposed to alkaline solution

Thomas Keller, Florian Riebel

Quebec, Canada2007

Genetic programming in modeling of fatigue life of composite materials

Thomas Keller, Anastasios Vassilopoulos

Springer2007

Function-integrated GFRP sandwich roof structure

Thomas Keller, Till Vallée

2007

Long-term performance of a glass fiber-reinforced polymer truss bridge

Thomas Keller, Till Vallée, Yu Bai

In the summer of 2005, after eight years of use as a temporary bridge during the winter, the Pontresina Bridge for pedestrians was transported to the Swiss Federal Institute of Technology Lausanne for a detailed assessment of the structural safety, service ...

2007

Structural response of liquid-cooled GFRP slabs subjected to fire - Part I: Material and post-fire modeling

Thomas Keller, Craig Tracy

Temperature-dependent material properties of glass fiber-reinforced polymer composites were derived from tests performed on the material itself, from references concerned with similar polymer materials and from observations during full-scale fire experimen ...

Elsevier2006

Multifunctional hybrid GFRP/steel joint for concrete slab structures

Thomas Keller, Florian Riebel

A multifunctional hybrid glass fiber-reinforced polymer (GFRP)/steel joint has been developed for the transfer of compression and shear forces in thermal insulation sections of concrete slab structures used in building construction. The new pultruded cellu ...

2006

A Weibull-based method to predict the strength of adhesivly bonded joints of pultruded FRPs

Thomas Keller, Till Vallée

2006

A new concept for a ligthweight hybrid-FRP bridge deck

Thomas Keller, Till Vallée, Erika Schaumann

2006

Fiber reinforced polymer bridges and their design

Thomas Keller

2006

In-plane tensile performance of a cellular FRP bridge deck acting as top chord of continuous bridge girders

Thomas Keller, Martin Schollmayer

The in-plane tensile performance of a pultruded FRP bridge deck system was examined with regard to the use of the deck as the compositely acting top chord of hybrid bridge main girders in negative moment regions. The deck properties determined on the syste ...

2006

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