Using Polymer Modified Asphalt Emulsions in Surface Treatments A ...
Using Polymer Modified Asphalt Emulsions in Surface Treatments A ...
Using Polymer Modified Asphalt Emulsions in Surface Treatments A ...
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Latex <strong>Modified</strong><br />
Unmodified<br />
80<br />
Chip Retention (%)<br />
60<br />
40<br />
20<br />
0<br />
0 30 60 90 120<br />
Cur<strong>in</strong>g Time (m<strong>in</strong>.)<br />
Figure 6: Stone Retention over Cur<strong>in</strong>g Time (14)<br />
Wet Abrasion Loss<br />
Wheel Track Deformation<br />
60<br />
15<br />
Wet Abrasion Loss (g/sq.ft.)<br />
50<br />
40<br />
30<br />
20<br />
10<br />
10<br />
5<br />
Wheel Track Deformation (%)<br />
0<br />
SBR NRL SBS EVA Neoprene<br />
0<br />
Figure 7: Wet Track Abrasion and Loaded Wheel Test by <strong>Polymer</strong> Type (14)<br />
2.2.4 Block Copolymers<br />
When hard styrenic polymers (i.e., styrene conta<strong>in</strong><strong>in</strong>g) are co-polymerized with small<br />
molecules such as butadiene <strong>in</strong> structurally discrete connected blocks, the result is a<br />
16