Light gauge steel framed (LSF) wall systems made of cold-formed steel studs and lined with different types of wallboards are increasingly used for various purposes. Gypsum plasterboards are commonly used for fire protection purposes, while recently other types of wallboards are being used based on their improved thermal and physical performance but without an understanding of their fire resistance. To increase the thermal mass of LSF wall systems, phase change materials (PCMs) with high thermal storage capacity can be used, but since some organic PCMs increase the fuel load in fire, bio-based PCMs are preferred as they are less flammable than paraffin based PCMs. However, the fire resistance of LSF wall systems incorporated with bio-based PCM has not been investigated. Therefore, this research study investigated the thermal properties of selected wallboards first and then the fire resistance of non-load bearing LSF wall systems lined with different types of wallboards such as gypsum plasterboard, magnesium sulphate board, vermiculux board and fibre cement board using standard fire tests including a thermal mass improved LSF wall system using bio-based PCM mat. Findings revealed that gypsum plasterboard gives the highest fire resistance, whereas the fibre cement board gives the lowest. Importantly, the thermal mass improved LSF wall system did not exhibit any reduction to its fire resistance due to the use of bio-based PCM mat. This paper presents the details of the standard fire tests of LSF wall systems and the results.

由冷弯钢钉制成并衬有不同类型墙板的轻型钢框架（LSF）墙系统正越来越多地用于各种目的。石膏灰泥板通常用于防火目的，而近来，基于其改善的热和物理性能但不了解其耐火性而使用其他类型的墙板。为了增加LSF墙系统的热质量，可以使用具有高蓄热能力的相变材料（PCM），但是由于某些有机PCM会增加火灾中的燃料负荷，因此生物基PCM比石蜡更不易燃，因此是可取的基于PCM。但是，尚未研究结合了生物基PCM的LSF墙系统的耐火性。因此，这项研究首先调查了选定墙板的热性能，然后调查了衬有不同类型墙板（​​如石膏灰泥板，硫酸镁板，ver石板和纤维水泥板）的非承重LSF墙体系统的耐火性，并使用标准防火测试，包括使用生物基PCM垫的热质量改进型LSF墙系统。研究发现，石膏灰泥板的耐火性最高，而纤维水泥板的耐火性最低。重要的是，由于使用了生物基PCM垫，改进了热质量的LSF墙体系统的耐火性并未降低。本文介绍了LSF墙体系统的标准防火测试的详细信息和结果。