Which type of failure describes a separation between SFRM and substrate?

The type of failure that describes a separation between Spray Fire-Resistive Material (SFRM) and the substrate is known as adhesive failure. This occurs when the bond between the SFRM and the surface it is applied to breaks down, which can be attributed to several factors such as improper application, surface contamination, or inadequate adhesion properties of the SFRM itself.

In adhesive failure, it's crucial to understand that the SFRM may remain intact, but it loses its connection to the substrate, compromising its effectiveness as a fireproofing measure. Proper adhesion is critical for ensuring that the fireproofing material performs its intended function in fire resistance. Identifying adhesive failure is vital for maintenance and inspection of fireproofing systems, as it can lead to significant performance issues if not addressed.

Other types of failure such as delamination, while related, generally refer to a specific situation where layers of materials peel apart, which may not fully capture the essence of just the separation from the substrate itself. Cracking refers to physical splits in the material, often due to impact or thermal expansion, while fatigue pertains to the weakening of materials over time through repeated stress, neither of which directly addresses the failure of adhesion to the substrate. Therefore, adhesive failure