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Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios (2020)

Chapter: Appendix F - Binder Blend Aging Prediction Data

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Suggested Citation:"Appendix F - Binder Blend Aging Prediction Data." National Academies of Sciences, Engineering, and Medicine. 2020. Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios. Washington, DC: The National Academies Press. doi: 10.17226/25749.
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Suggested Citation:"Appendix F - Binder Blend Aging Prediction Data." National Academies of Sciences, Engineering, and Medicine. 2020. Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios. Washington, DC: The National Academies Press. doi: 10.17226/25749.
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Suggested Citation:"Appendix F - Binder Blend Aging Prediction Data." National Academies of Sciences, Engineering, and Medicine. 2020. Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios. Washington, DC: The National Academies Press. doi: 10.17226/25749.
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Suggested Citation:"Appendix F - Binder Blend Aging Prediction Data." National Academies of Sciences, Engineering, and Medicine. 2020. Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios. Washington, DC: The National Academies Press. doi: 10.17226/25749.
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F-1 A P P E N D I X F Binder Blend Aging Prediction Data Figure F.1. Constant Rate Oxidation Kinetics for PG 64-22 Base Binder Blends Figure F.2. Constant Rate Oxidation Kinetics for PG 64-28 Base Binder Blends y = 1E+09e-75x y = 1E+09e-75.69x y = 4E+07e-64.42x 0.0001 0.001 0.01 0.1 0.32 0.33 0.34 0.35 0.36 0.37 kc ( C A g/ da y) 1/RT (mol/KJ) Base (64-22) Base (2.7%) T1 Recycled 0.50 RBR (PG 64-22) (2.7%) T1 Expon. (Base (64-22)) Expon. (Base (2.7%) T1) Expon. (Recycled 0.50 RBR (PG 64-22) (2.7%) T1) y = 5E+07e-64.87x y = 2E+08e-68.68x y = 4E+08e-70.24x y = 1E+08e-69.94x y = 8E+08e-72.73x 0.0001 0.001 0.01 0.1 0.32 0.33 0.34 0.35 0.36 0.37 kc ( C A g/ da y) 1/RT (mol/KJ) Base (64-28) Base (2.7%) T1 Base (6%) A1 Recycled 0.50 RBR (PG 64-28) (12.5%) T1 Recycled 0.40 RBR (PG 64-28) (6%) A1 Expon. (Base (64-28)) Expon. (Base (2.7%) T1) Expon. (Base (6%) A1) Expon. (Recycled 0.50 RBR (PG 64-28) (12.5%) T1 ) Expon. (Recycled 0.40 RBR (PG 64-28) (6%) A1)

F-2 Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios Figure F.3. Constant Rate Oxidation Kinetics for PG 64-28P Base Binder Blends Figure F.4. Constant Rate Oxidation Kinetics for PG 58-28 Base Binder Blends y = 6E+08e-72.53x y = 5E+09e-79.18x y = 5E+10e-86.14x 0.0001 0.001 0.01 0.1 0.32 0.33 0.34 0.35 0.36 0.37 kc ( C A g/ da y) 1/RT (mol/KJ) Base (64-28P) Base (2.7%) T1 Recycled 0.50 RBR (PG 64- 28P) (11%) T1 Expon. (Base (64-28P)) Expon. (Base (2.7%) T1) Expon. (Recycled 0.50 RBR (PG 64-28P) (11%) T1) y = 1E+10e-81.39x y = 3E+10e-84.09x y = 8E+12e-103.5x y = 3E+07e-64.22x 0.0001 0.001 0.01 0.1 0.32 0.33 0.34 0.35 0.36 0.37 kc ( C A g/ da y) 1/RT (mol/KJ) DOT Control 0.22 RBR Recycled 0.31 RBR Recycled 0.31 RBR (PG 52- 34) Recycled 0.31 RBR ( 1.2%) V2 Expon. (DOT Control 0.22 RBR) Expon. (Recycled 0.31 RBR) Expon. (Recycled 0.31 RBR (PG 52-34)) Expon. (Recycled 0.31 RBR ( 1.2%) V2)

Binder Blend Aging Prediction Data F-3 Figure F.5. Glover-Rowe Parameter at 15°C for PG 64-22 Base Binder (TX (Expanded) Material Cluster). Figure F.6. Glover-Rowe Parameter at 15°C for PG 64-28 Base Binder (NH (Expanded) Material Cluster). 0.01 0.1 1 10 100 1000 10000 100000 5.115.00 G -R ( kP a) [ 15 °C , 0 .0 05 r ad /s ] CAg [CAg=CA-CAtank] (arbit. unit) Base (64-22) Base (2.7%) T1 Recycled 0.50 RBR (PG 64-22) (2.7%) T1 G-R = 180 kPa G-R = 600 kPa 0.01 0.1 1 10 100 1000 10000 100000 5.115.00 G -R ( kP a) [ 15 °C , 0 .0 05 r ad /s ] CAg [CAg=CA-CAtank] (arbit. unit) Base (64-28) Base (2.7%) T1 Base (6%) A1 Recycled 0.50 RBR (PG 64-28) (12.5%) T1 Recycled 0.40 RBR (PG 64-28) (6%) A1 G-R = 180 kPa G-R = 600 kPa

F-4 Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios Figure F.7. Glover-Rowe Parameter at 15°C for PG 64-28P Base Binder (NV (Expanded) Material Cluster). Figure F.8. Glover-Rowe Parameter at 15°C for WI Material Cluster. 0.01 0.1 1 10 100 1000 10000 100000 5.115.00 G -R ( kP a) [ 15 °C , 0 .0 05 r ad /s ] CAg [CAg=CA-CAtank] (arbit. unit) Base (64-28P) Base (2.7%) T1 Recycled 0.50 RBR (PG 64-28P) (11%) T1 G-R = 180 kPa G-R = 600 kPa 0.01 0.1 1 10 100 1000 10000 100000 5.10.15.00.0 G -R ( kP a) [ 15 °C , 0 .0 05 r ad /s ec ] CAg [CAg = CA - CAtank] (Arbit. Unit) DOT Control 0.22 RBR Recycled 0.31 RBR Recycled 0.31 RBR (PG 52-34) Recycled 0.31 RBR ( 1.2%) V2 G-R = 180 kPa G-R = 600 kPa

Next: Appendix G - Recycling Agent Characterization Data »
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More than 90 percent of highways and roads in the United States are built using hot-mix asphalt (HMA) or warm-mix asphalt (WMA) mixtures, and these mixtures now recycle more than 99 percent of some 76.2 million tons of reclaimed asphalt pavement (RAP) and about 1 million tons of recycled asphalt shingles (RAS) each year. Cost savings in 2017 totaled approximately $2.2 billion with these recycled materials replacing virgin materials.

The TRB National Cooperative Highway Research Program'sNCHRP Research Report 927: Evaluating the Effects of Recycling Agents on Asphalt Mixtures with High RAS and RAP Binder Ratios presents an evaluation of how commercially available recycling agents affect the performance of asphalt mixtures incorporating RAP and RAS at high recycled binder ratios.

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