Structural Protection Mat (SPM)
Developed using a blend of thermoplastic materials and elastomeric inclusions to form a polymeric alloy. Sheets of FC444 are laid on the structure (typically bridge decks) before laying the ballast.
Edge joining strips 75mm wide are used for welding sheets together using simple heat gun technology, providing a continuous layer to protect the bridge structure against the abrasive effects of the ballast.
Joined to Create a Continuous Layer
Protects bridge structures against the abrasive effects of the ballast
Physical Properties
| Test | Method | Conditions | Data | Units |
| Tensile Strength | ISO 37 | 5.4 | MPa | |
|---|---|---|---|---|
| Elongation at Break | ISO 37 | 250 | % | |
| Abrasion Resistance | Taber | 3000 cycles, 1000g | 0.69 | g loss |
| Abrasion Resistance | Taber | 3000 cycles, 1000g | 0.23 | mm loss |
| Electrical Resistance | BS 903pt. C2 | 100v dc | 1.1 x 1011 | Ωcm |
| Thickness (Nominal) | 4.5 | mm | ||
| Weight | 5.2 | kg/m2 | ||
| Water Absorption | 0.008 | g/cm3 |
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