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Fire resistance of extruded hollow-core slabs

机译：挤压空心板的耐火性

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Purpose - Prefabricated extruded hollow-core slabs are preferred building components for floor structures in several countries. It is therefore important to be able to document the fire resistance of these slabs proving fulfilment of standard fire resistance requirements of 60 and 120 min found in most national building regulations. The paper aims to present a detailed analysis of the mechanisms responsible for the loss of loadbearing capacity of hollow-core slabs when exposed to fire. Design/methodology/approach - Furthermore, it compares theoretical calculation and assessment according to the structural codes with data derived from a standard fire test and from a thorough examination of the comprehensive test documentation available on fire exposed hollow-core slabs. Findings - Mechanisms for loss of load-bearing capacity are clarified, and evidence of the fire resistance is found. Originality value - For the first time, the mechanisms responsible for loss of load-bearing capacity are identified, and test results and calculation approach are for the first time applied in accordance with each other for assessment of fire resistance of the structure.
机译：目的-预制挤压空心板是一些国家/地区地板结构的首选建筑构件。因此，重要的是要能够证明这些平板的防火性能，证明其符合大多数国家建筑法规中60和120分钟的标准耐火要求。本文旨在详细分析引起空心板承受火时承重能力损失的机理。设计/方法/方法-此外，它将根据结构规范进行的理论计算和评估与标准耐火试验和经过全面检查的可暴露于空心空心板的综合测试文档得出的数据进行比较。调查结果-阐明了承载力损失的机理，并找到了耐火性的证据。原创性值-首次确定了造成承载力损失的机制，并且首次将测试结果和计算方法相互一致地用于评估结构的耐火性。

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