Spontaneous breaking of thermally toughened safety glass in facades: can we state if the Heat Soak Test (HST) was done according to EN14179-1:2005 or not ?
Year: 2025
Type: article
Abstract: Spontaneous glass breakage of thermally toughened glass due to NiS inclusions can be largely prevented by a Heat Soak Test (HST). This well-established test has been incorporated into the European standard EN 14179-1:2005. However, according to literature (Yousfi et al., Verre 16(1):38–54, 2010b ), there might be a theoretical probability, that a potentially dangerous inclusion could lead to a breakage after a well-conducted HST. Glass processors may neglect to conduct the test for a variety of reasons (sometimes furnaces are not calibrated, are overloaded, a wrong temperature profile is run etc.), even advising not to perform it at all, preferring to replace the glass should failure on a building occur. In this paper, we will show that, due to recent advances in microanalysis techniques, it is now possible to state after a failure on a building whether the heat soak test was correctly conducted according the EN standard or not.
Source: Glass Structures & Engineering
Authors: Philippe Letocart, Francis Serruys
Institution: Saint-Gobain (Germany)
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $2,190
OpenAlex ID: W4408316339