Research Article
Effect of Rubberized Bitumen Blending Methods on Permanent Deformation of SMA Rubberized Asphalt Mixtures
Table 7
Three-stage models for control and rubberized asphalt mixtures at 200 kPa.
| Temperature (°C) | Asphalt mixture specimen | Primary stage | Secondary stage | Tertiary stage | Model | End point | Predicted strain, µs | Measured strain, µs | Model | Slope | End point (FN) | Predicted strain, µs | Measured strain, µs | Model |
| 40°C | Control | = 2979.3N0.2628 | 1173 | 19086.48 | 19100.08 | = 19086.48 + 4.422() | 4.422 | a | a | a | a | TB | = 2712.8N0.2343 | 1063 | 13884.64 | 13708.17 | = 13884.64 + 2.173() | 2.173 | a | a | a | a | CB | = 2331.3N0.2486 | 865 | 12523.92 | 12222.56 | = 12523.92 + 2.235() | 2.235 | a | a | a | a |
| 50°C | Control | = 2513.8N0.3004 | 479 | 16051.05 | 16116.79 | = 16051.05 + 9.904() | 9.904 | a | a | a | a | TB | = 2828.6N0.2729 | 735 | 17130.95 | 17265.137 | = 17130.95 + 5.733() | 5.733 | a | a | a | a | CB | = 2505.7N0.2737 | 701 | 15059.21 | 15183.12 | = 15059.21 + 5.886() | 5.886 | a | a | a | a |
| 60°C | Control | = 3033.3N0.3769 | 179 | 21429.68 | 21786.87 | = 21429.68 + 50.938() | 50.938 | 745 | 50260.59 | 51394.74 | = 50260.6 + 2159.8() | TB | = 2479.8N0.3449 | 109 | 12506.19 | 12573.35 | = 12506.19 + 31.592() | 31.592 | 813 | 34746.96 | 36121.42 | = 34747.0 + 2749.6() | CB | = 2582.3N0.3321 | 281 | 16796.63 | 17038.48 | = 16796.63 + 20.296() | 20.296 | 1417 | 39852.89 | 40954.44 | = 39852.9 + 1474.2() |
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Not found at the end of 1800 cycles.
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