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 />
Comparison of Friction Tests - MN251 2006 Trial<br />
DFT/CTM portable, easy-to-use, results correlate with full scale test<br />
Friction Number<br />
International Friction Index-IFI X100<br />
70<br />
60<br />
50<br />
40<br />
30<br />
20<br />
10<br />
0<br />
IFI (x 100)<br />
E-274 w Smooth Tire<br />
E-274 w Ribbed Tire<br />
Control 1 Control 2 CRS-<br />
2P(d)<br />
IFI Tested Same Day,<br />
E-274 Several Days Later<br />
r 2 = 0.9019 for Smooth Tire<br />
r 2 = 0.9125 for Ribbed Tire<br />
LD-7 Pass QB Reclamite Chip Seal/<br />
CRS-2Pd<br />
IFI as measured by DFT/CTM (ASTM E1911/E2157)–Tested by North Central Superpave Center<br />
Full-Scale Tire Testing (ASTM E274) – Tested by Mn/DOT<br />
The portable devices gave similar rankings but different absolute friction numbers<br />
than standard trailer testing (ASTM E-274), as shown in the graph. SR 251 is an<br />
aging dense-graded surface (except for the chip seal section).<br />
76