Analysis of Charring Pine Morphology under Different Heating Conditions

Pine is an excellent building and furnishing material, and pine charring traces are often left in the fire scene. The surface morphology of charring pine is closely related to heating conditions, and the research of charring pine can provide a reference for fire investigation. Charring pine samples were prepared under different simulated fire conditions, which are flame-burning, heat radiation and hot body-burning. The macroscopic and microscopic morphology of charring pine were recorded and characterized by digital camera and scanning electron microscope. The experimental results showed that: under different heating conditions, the difference of charring pine surface morphology characters are significantly. The conclusion can help fire investigators to judge the fire heated condition, and to identify the cause of the fire.