Rheological characterisation of rejuvenator blending lines
Source abstract
Abstract
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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Asphalt Pavement Performance Evaluation · Infrastructure Maintenance and Monitoring · Geotechnical Engineering and Underground Structures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Braunschweig Pavement Engineering Centre (ISBS), Technische Universität Braunschweig, Braunschweig, Germany
BASF SE, Asphalt Performance EMEA, Ludwigshafen am Rhein, Germany
Funding
BASF SE
References (25)
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