Modelling intumescent coatings for the fire protection of structural systems: a review
Andrea Lucherini,
Donatella de Silva
Abstract:PurposeIntumescent coatings are nowadays a dominant passive system used to protect structural materials in case of fire. Due to their reactive swelling behaviour, intumescent coatings are particularly complex materials to be modelled and predicted, which can be extremely useful especially for performance-based fire safety designs. In addition, many parameters influence their performance, and this challenges the definition and quantification of their material properties. Several approaches and models of various… Show more
Обговорено шляхи реалізації завдань прикладної тематики НАН України зі створення інноваційних технологій вогнезахисту сталевих конструкцій. Продемонстровано механізми втілення результатів фундаментальних досліджень у розроблення засобів пасивного вогнезахисту з подальшим впровадженням у промислове виробництво та застосуванням у будівельній галузі. Розглянуто фактори, що впливають на вогнезахисну ефективність реактивних покриттів: природа полімерної складової, співвідношення основних компонентів інтумесцентної системи, вміст і структура наноглин тощо. Запропоновано алгоритм прямих випробувань вогнезахисної ефективності в процесі розроблення рецептури інтумесцентного покриття. Отримані результати підтверджено повномасштабними вогневими випробуваннями. проведеними за європейськими та адаптованими національними стандартами.
Jet fires are the second most common fire scenario after spill fires. This type of fire is characteristic of gas and gas–oil fires occurring on oil platforms and gas production and processing plants. The consequences of such fires are characterized by high material damage; this is associated with extensive networks of technological communications, since there is a high density of technological facilities and installations in the territory where these fires occur. At such facilities, there is a large number of steel structures, which under the action of high temperature quickly lose their strength and deform. To protect steel structures in the oil and gas industry, fire protection is used, which consists of different types: boards in the form of flat plates, plasters, and epoxy paints. This paper compares three types of fire protection materials for steel structures under jet fire: board fireproofing, plaster composition, and epoxy coating. When comparing the efficiency in jet fire, cement boards were found to be the best. However, despite the better fire protection efficiency, their low application is expected due to their massiveness and the high cost of such protection and the difficulty of installation. Nevertheless, the development of fire depends on the place of its origin, the size of the initial fire zone, and the stability and massiveness of the metal elements of the vessel structure or the structure of the boards on which the equipment can be placed. Therefore, it is necessary to take these factors into account when selecting fire protection and to apply it depending on the required fire resistance limits of structures, which should be determined depending on the fire development scenarios.
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