Journal
FIRE TECHNOLOGY
Volume 58, Issue 5, Pages 2871-2898Publisher
SPRINGER
DOI: 10.1007/s10694-022-01290-7
Keywords
Explainable artificial intelligence; Fire; Concrete; Spalling; Nomogram
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Fire-induced spalling of concrete is a complex research problem, and existing theories on predicting spalling show discrepancy and inconsistency. This paper uses explainable Artificial Intelligence (XAI) to validate existing theories and discover solutions to predict concrete spalling. The proposed solutions are presented in the form of graphs and nomograms, enabling researchers and engineers to easily identify the propensity of concrete mixtures to spalling.
Fire-induced spalling of concrete continues to be an intriguing and intricate research problem. A deep dive into the open literature highlights the alarming discrepancy and inconsistency of existing theories, as well as the complexity of predicting spalling. This brings new challenges to creating fire-safe concretes and primes an opportunity to explore modern methods of investigation to tackle the spalling phenomenon. Thus, this paper leverages the latest advancements in explainable Artificial Intelligence (XAI) to vet existing theories on fire-induced spalling and to discover solutions/heuristics to predict spalling of concrete mixtures. The developed heuristics are in the form of graphs and nomograms. The proposed solutions allow interested researchers and engineers to graphically identify the propensity of a given concrete mixture to spalling directly and with ease. For example, we report that concrete mixtures with a combination of moderate water/binder ratio (of about 0.3), low heating rate (less than 2.5 degrees C/min), moderate rise in temperature (less than 500 degrees C), and have moisture content (less than 3%) are expected to be less prone to spalling. Further, findings from this research showcase the potential for developing simple (i.e., one-shot) and graphical (coding-free and formula-free) XAI-based solutions and web applications to address decades-long problems in the area of concrete research.
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