Spray Applied Polymer Surface Seals - TSP2
Spray Applied Polymer Surface Seals - TSP2
Spray Applied Polymer Surface Seals - TSP2
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Lessons Learned<br />
Fog Seal<br />
Friction & Texture Testing<br />
Dynamic Friction Test<br />
ASTM E-1911<br />
• Good Repeatability<br />
3 replicates OK<br />
• Calculate IFI<br />
Friction & Texture<br />
Reasonable correlation<br />
with skid trailers<br />
Portable, easy-to-use<br />
Field friction testing (International Friction Index from the DFT and CTM) was<br />
repeatable, and the results consistent. Initial testing included six individual runs of<br />
each test per test section. Because of good repeatability, this was reduced to three<br />
repeatable runs. Loose sand must be swept before running DFT and CTM tests, or<br />
it will increase apparent surface texture, giving erroneously high calculated IFI<br />
measurements.<br />
Circular Texture Meter (CT Meter) ASTM E-2157 and Dynamic Friction Tester<br />
(DFT) ASTM E-1911<br />
75
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