| Autor: |
Büchner, Johannes, Wistuba, Michael P., Miesem, Sebastian, Neliepp, Michael, Dietzsch, Michael, Šandor, Mario |
| Zdroj: |
Road Materials & Pavement Design; 2023 Suppl1, Vol. 24, p321-335, 15p |
| Abstrakt: |
Three different rejuvenators are blended with a differently-aged penetration graded asphalt binder 50/70 and investigated using different rheological test methods. Characteristic temperatures T(G* = 15 kPa) and T(G* = 5 MPa) as well as corresponding phase angles δ(G* = 15 kPa) and δ(G* = 5 MPa) are used to evaluate the efficiency of the rejuvenators, to obtain blending lines and to determine required rejuvenator dosage. Each rejuvenator acts slightly different depending on the dosage and linear blending laws can erroneously affect dosage calculation, especially for high dosages. Moreover, the required rejuvenator dosage is different in the high-temperature range according to temperatures T(G* = 15 kPa) compared to intermediate temperature range according to T(G* = 5 MPa). The blending lines of different rejuvenators are of great use for evaluating rejuvenator effectiveness in the high-temperature range. In addition, relaxation tests seem to be suitable for low-temperature evaluation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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