Experimental Study of Thermal Degradation of Fire Resisting Compartment Partitions in Fires
Notice bibliographique
Résumé
Fire separations in a building (e.g. walls) are often constructed from combustible materials; those containing wood stud framing, mineral wool insulation, and gypsum board wallcoverings are commonplace in Canadian residential buildings. These construction assemblies degrade under fire exposure, a process involving chemical decomposition as well as physical damage. A fire separation's ability to resist the spread of fire is traditionally assessed by means of a fire resistance test, in which a construction assembly is exposed to an intense furnace fire under prescribed conditions. This method of assessment, while standardized and prescribed in the National Building Code of Canada, can be restrictive to the design process. In contrast, a performance-based approach, in which the adequacy of a fire separation is assessed on the basis of its real-world use, can lead to designs with improved safety, efficiency, and flexibility. Such a design approach requires a specific engineering toolset: models capable of predicting the thermal degradation of construction assemblies under specified fire conditions. Development of the next generation of thermal degradation models requires detailed study of the phenomena occurring at the large-scale, in the context of real fires rather than prescribed exposure conditions, and a controlled means by which to conduct this type of study. Also, a diverse set of experimental data is required for the validation of such models. The objective of the present body of work is to develop a novel large-scale experiment tailored specifically for the study of thermal degradation of construction assemblies in real fires, and to demonstrate the utility of the experimental procedure as applied to the detailed study of thermal degradation phenomena. A selection of relevant experimental techniques were identified, and a new apparatus and method of test were developed for this stated purpose. In this new experiment, one wall of a fire compartment was instrumented and monitored as it was subject to a realistic fire exposure. A novel method for measurement of incident heat flux to a large area in a fire compartment was developed, and used to characterize the conditions of the experiment for a wood crib fire. A series tests were conducted on fire resisting compartment partitions that are used in residential buildings in Canada. In the tests, thermal degradation phenomena were observed and assessed relative to temperatures measured in the degrading walls. The utility of this new approach in the experimental study of thermal degradation of construction assemblies subject to real fire exposures was demonstrated. Furthermore, a relevant set of experimental data was generated that may be used for validation of future models of thermal degradation and integrated fire analysis.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».