装配式混凝土夹心保温外墙结构实体火灾试验研究
Practical Fire Test Research on Prefabricated Concrete Sandwich Insulation External Wall Structure

为验证装配式混凝土夹心保温外墙结构的防火性能，本文对一种使用PE棒及装配式建筑MS密封胶进行接缝封堵并使用木砖窗口构造的装配式混凝土夹心保温外墙板结构进行了全尺寸实体火灾试验，采集并对比分析了着火房间温度、着火房间外立面接缝处温度、着火房间窗框处温度等数据。结果表明，PE棒及装配式建筑MS密封胶接缝封堵能够起到良好的隔热作用，阻止火焰在保温材料内部蔓延；木砖窗口构造在火灾初期能够起到一定阻火隔热的保护作用，但随着木砖炭化，依然会造成火焰蔓延；在保证施工工艺的条件下，装配式夹心保温外墙板结构可以有效避免火灾通过外墙进行蔓延。
In this paper, to verify the fire performance of prefabricated concrete sandwich insulation external wall structure, a full-scale practical fire test was conducted on a prefabricated concrete sandwich insulation external wall panel structure using PE rods and prefabricated building MS sealant for joint sealing, and wooden bricks for the window. Data such as the temperature of the fire room, the temperature of the external facade joint of the fire room, and the temperature of the window frame of the fire room were collected and compared. The results show that PE rods and prefabricated building MS sealant can play a good insulation role, preventing the fire spread inside the insulation material; the construction of wooden brick windows can play a role in preventing fire and insulating in the early stages of a fire, but as the wooden bricks carbonize, they still cause flame spread; under the guarantee of construction process conditions, the prefabricated sandwich insulation external wall panel structure can effectively prevent fire from spreading through the external wall.