Research Article
Aging of Rejuvenated Asphalt Binders
Table 6
BBR test for 20-hour PAV-aged samples.
| Sample | RA% | Temp. (°C) | 20-hour PAV | 60-hour PAV | Low temp. PG increase (°C) 20 to 60 hours | | -value | Low temp. PG (°C) | | -value | Low temp. PG (°C) |
| VB1 | 0 | −6 | 161 | 0.362 | −21.90 | 147 | 0.282 | −14.48 | 7.43 | −12 | 205 | 0.299 | 235 | 0.211 | −18 | 391 | 0.256 | 448 | 0.178 |
| 1 | 3.42 | −6 | 109 | 0.370 | −23.37 | 159 | 0.292 | −14.67 | 8.70 | −12 | 191 | 0.313 | 281 | 0.256 | −18 | 367 | 0.267 | 465 | 0.230 |
| 2 | 9.68 | −6 | 78.7 | 0.377 | −24.00 | 135 | 0.298 | −15.74 | 8.26 | −12 | 173 | 0.319 | 248 | 0.251 | −18 | 332 | 0.262 | 480 | 0.182 |
| 3 | 6.19 | −6 | 116 | 0.358 | −23.10 | 152 | 0.297 | −15.54 | 7.56 | −12 | 203 | 0.309 | 273 | 0.258 | −18 | 388 | 0.253 | 468 | 0.211 |
| 4 | 16.82 | −6 | 90.4 | 0.364 | −23.68 | 149 | 0.301 | −16.17 | 7.51 | −12 | 194 | 0.314 | 269 | 0.266 | −18 | 404 | 0.251 | 461 | 0.232 |
| 5 | 4.93 | −6 | 74.4 | 0.345 | −20.50 | 126 | 0.273 | −12.40 | 8.10 | −12 | 153 | 0.285 | 193 | 0.228 | −18 | 282 | 0.255 | 343 | 0.190 |
| 6 | 19.33 | −6 | 39.6 | 0.340 | −19.29 | 94.9 | 0.270 | −11.00 | 8.29 | −12 | 91 | 0.267 | 144 | 0.234 | −18 | 137 | 0.248 | 212 | 0.202 |
| 7 | 10.48 | −6 | 54.2 | 0.321 | −18.57 | 108 | 0.268 | −11.32 | 7.25 | −12 | 114 | 0.272 | 161 | 0.227 | −18 | 193 | 0.246 | 282 | 0.194 |
| 8 | 40.18 | −6 | Invalid | Invalid | Invalid | Invalid | Invalid | Invalid | — | −12 | 34.1 | 0.241 | 39.4 | 0.245 | −18 | 55.1 | 0.231 | 61.3 | 0.230 |
| VB2 | 0 | −6 | 149 | 0.352 | −21.11 | 184 | 0.276 | −13.64 | 7.48 | −12 | 301 | 0.291 | 341 | 0.215 | −18 | 454 | 0.262 | 487 | 0.183 |
| 9 | 4.14 | −6 | 112 | 0.360 | −22.62 | 182 | 0.294 | −14.80 | 7.82 | −12 | 215 | 0.303 | 319 | 0.264 | −18 | 393 | 0.274 | 455 | 0.232 |
| 10 | 10.73 | −6 | 83.6 | 0.365 | −24.84 | 144 | 0.305 | −16.86 | 7.98 | −12 | 180 | 0.327 | 267 | 0.270 | −18 | 365 | 0.270 | 445 | 0.239 |
| 11 | 7.53 | −6 | 98.4 | 0.351 | −23.96 | 173 | 0.298 | −15.48 | 8.48 | −12 | 181 | 0.317 | 307 | 0.275 | −18 | 387 | 0.265 | 472 | 0.248 |
| 12 | 17.18 | −6 | 85.4 | 0.373 | −25.63 | 137 | 0.312 | −17.89 | 7.73 | −12 | 175 | 0.329 | 261 | 0.274 | −18 | 370 | 0.281 | 470 | 0.246 |
| 13 | 5.88 | −6 | 76.3 | 0.346 | −20.68 | 129 | 0.259 | −10.98 | 9.70 | −12 | 169 | 0.287 | 264 | 0.210 | −18 | 311 | 0.268 | 358 | 0.191 |
| 14 | 19.54 | −6 | 36.6 | 0.345 | −21.19 | 77.9 | 0.256 | −4.00 | 17.19 | −12 | 74.8 | 0.293 | 126 | 0.234 | −18 | 135 | 0.260 | 185 | 0.214 |
| 15 | 11.75 | −6 | 51.2 | 0.329 | −19.16 | 81.2 | 0.261 | −9.31 | 9.85 | −12 | 115 | 0.274 | 193 | 0.226 | −18 | 189 | 0.235 | 277 | 0.197 |
| 16 | 39.79 | −6 | Invalid | NA | Invalid | 45.8 | 0.238 | Invalid | Invalid | −12 | 37.5 | 0.271 | 71.9 | 0.219 | −18 | 47.5 | 0.266 | 107 | 0.200 |
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