Experimental Analysis of Fire Resistance of Laminated Glass Beams

Abstract

The paper deals with experimental verification of the behaviour of laminated glass beams under fire load according to the ISO 834 standard temperature curve. Two fire tests were performed on laminated glass beams. The first test involved a three-layer beam made of float glass. The second test specimen had the same composition, but with the addition of a protective outer layer of borosilicate glass. Both test specimens were loaded with a point load in the middle during the experiment. During the tests, the time development of temperatures in the cross-section and the deformation of the beams were monitored. In the unprotected sample, all glass panes gradually cracked and collapsed within 900 seconds. The protected sample exhibited different temperature and failure behaviour, with the test lasting 1800 s. The measured data form the basis for subsequent numerical simulation of heat transfer and thermo-mechanical response of laminated glass.