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Gypsum Board in Fire - Modeling and Experimental Validation

机译:石膏板在火灾中的建模与实验验证

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摘要

The thermal behavior of a commercially widespread gypsum board (810 kg/m~3) under fire condition has been investigated. For this purpose two 12 mm thick gypsum boards are subjected to the standard fire ISO 834 and the temperature distribution within them is measured by means of thermocouples placed at different depths in the samples. The results hereof are used to validate a numerical model based on the density, thermal conductivity, and effective heat capacity of the gypsum board as functions of temperature. The effects of dehydration/calcination and decomposition on these properties are determined by using thermogravimetric analysis, conductivity measurements after different heat treatments, and differential scanning calorimetry under air flow, respectively.
机译:研究了商业上广泛使用的石膏板(810 kg / m〜3)在着火条件下的热行为。为此,对两块12毫米厚的石膏板进行标准防火ISO 834的测试,其中的温度分布是通过放置在样品中不同深度的热电偶来测量的。本文的结果用于基于石膏板的密度,热导率和有效热容量随温度的变化来验证数值模型。分别通过热重分析,不同热处理后的电导率测量和气流下的差示扫描量热法确定脱水/煅烧和分解对这些性质的影响。

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