Fire protection systems for building floors made of pultruded GFRP profiles

Experimental study on the fire resistance of GFRPpultruded tubular columns

“…In addition, in the study of Bai et al [15] the exposure conditions were relatively favourable, not only due to the multi-cellular geometry, but also because the columns were exposed to fire only in one surface. Finally, none of the studies reported above investigated the effect of using passive fire protection, which was seen to be effective in extending the fire endurance of GFRP pultruded beams [12].…”

“…In fact, failure of such members was generally seen to be triggered in their upper side, due to compressive stresses. With passive (coatings, boards) [12] and active (watercooling) [10][11][12] protection, fire resistance increased considerably, with ratings of 60-120 min being attained.…”

“…Therefore, at the present stage, it is natural to resort to experimental tests. Even so, there are only a few experimental studies at a full-scale level reported in the literature about this issue, most of which addressing the response of horizontal members, either floor/deck panels [9][10][11] or beams [12]. These studies have shown that GFRP horizontal members, when exposed to fire from the bottom, are able to sustain service loads for relatively long periods, even without any fire protection (30-60 min of fire resistance were reported).…”

Two-Dimensional Modeling of Thermomechanical Responses of Rectangular GFRP Profiles Exposed to Fire

“…The test results demonstrated that liquid cooling was an effective way to improve the fire resistance of pultruded GFRP components. Correia et al [6] conducted structural fire endurance experiments on full-scale cellular GFRP columns subjected to one-side fire exposure. The noncooled column failed at 49 min due to global buckling, while structural function of the water-cooled columns could be maintained for two hours.…”

“…In 2008, the mechanism-based models [30][31][32] were developed to investigate the mechanical behavior of FRP composites in fire. This model was further validated on the predicting of the time-dependent temperature responses, elastic modulus degradation, and time to failure of watercooled full-scale GFRP cellular columns [6]. In 2011, Miano [21] developed a three-dimensional (3D) finite element (FE) thermal model with ATD to estimate the temperature profiles of carbon fiber-reinforced polymer (CFRP) wing box laminates.…”