Which testing method for SFRM utilizes polystyrene beads?

The displacement method for testing Spray-Applied Fire-Resistive Material (SFRM) is notable for its use of polystyrene beads. This method involves the introduction of beads into a sample of the fireproofing material, allowing for a more accurate assessment of the material's physical properties and its ability to resist fire. The polystyrene beads help in creating a consistent and measurable displacement, which aids in evaluating the overall effectiveness of the fireproofing application.

By using the displacement method, testers can gain valuable insight into how the SFRM performs under various conditions and loads, providing important data that informs compliance with fire safety standards. This methodology aligns with industry practices where effective measurement and testing techniques are crucial for ensuring structural integrity in fireproofing materials.