Pasandín, A.R.Orosa, PabloPérez Pérez, IgnacioRodríguez Alloza, Ana M.2025-10-032025-10-032025Pasandín, A. M. R., Orosa Iglesias, P., Pérez, I. P., & Rodríguez-Alloza, A. M. (2025). Preliminary Characterization of Lignin-Modified Binder for Half-Warm-Mix Asphalt. Polymers, 17(8), 1019. https://doi.org/10.3390/polym17081019https://hdl.handle.net/2183/45889[Abstract] There is a growing trend to promote circular economy practices and reduce petroleum-derived product consumption in the paving sector. In this context, a liquid lignin-rich industrial waste was incorporated at 0% (control), 5%, 10%, 15%, and 20% into a bitumen emulsion to manufacture a lignin-based biobinder for half-warm-mix asphalt (HWMA). The mix of the bitumen emulsion and the industrial waste was made using an Ultra-turrax device, with the final mixing temperature monitored using a thermographic camera. Microstructure analysis was conducted using scanning electron microscopy (SEM). The bitumen was extracted and characterized using needle penetration tests at several temperatures. Additionally, the ring-and-ball softening point, penetration index, and ductility were assessed. Incorporating up to 5% of lignin-rich industrial waste led to a lignin-based biobinder that could be used for a more sustainable and bitumen-efficient HWMA production.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/LigninBiobinderHalf-warm-mix asphaltMicrostructureRheologyjournal articleopen access10.3390/polym17081019