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Experimental Study of the Behavior of Steel Structures Protected by Different Intumescent Coatings and Exposed to Various Fire Scenarios

机译:不同膨胀型涂层保护钢结构行为及各种火灾情景的实验研究

摘要

Three different experimental setups corresponding to three different fire scenarios were used to investigate how different heating conditions and heating rates affect the behavior of two different thin intumescent coatings (solvent-based and water-based paints, respectively). The results confirm that the current procedure for the design of intumescent coatings has shortcomings, as different paints have different performances according to the heating conditions and, in particular, according to the fire’s heating rate. The tested water-based paint had better performance for low heating rates, while the tested solvent-based paint had better performance for high heating rates. However, for really low heating rates the solvent-based paint did not activate or provide proper insulation.
机译:对应于三种不同火灾情况的三种不同实验设置用于研究不同的加热条件和升温速率如何影响两种不同的薄型膨胀涂料(分别为溶剂型和水性涂料)的行为。结果证实,目前的膨胀型涂料设计程序存在缺陷,因为根据加热条件,尤其是根据火的加热速率,不同的涂料具有不同的性能。经测试的水性涂料在低加热速率下具有更好的性能,而经测试的溶剂型涂料在高加热速率下具有更好的性能。但是,对于非常低的加热速率,溶剂型涂料无法活化或提供适当的绝缘性。

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