Published: 2025-12-19

The influence of selected additives on improving the properties of mastic asphalt

Lesław Bichajło , Patryk Dąbrowski , Krzysztof Kołodziej , Kamil Kowalski , Jagoda Kubiak , Tomasz Siwowski

Abstract

In road construction in Poland, mastic asphalt is not a leading mixture. Traditional mixtures, mainly asphalt concrete (AC) and stone mastic asphalt (SMA) dominate. Nevertheless, mastic asphalt (MA) remains an attractive material due to its specific properties, such as low air void content and the possibility of laying without compaction. This paper reviews selected studies on additives used to improve mastic asphalt performance, focusing on Trinidad Epuré natural asphalt (TE), zeolites, and crumb rubber from waste tires. Experimental research analyzed the effect of TE addition (10% and 20% by binder mass) on the properties of MA 11 mastic asphalt in comparison with a reference mixture. The results showed that TE improved rutting resistance, particularly in mixtures with higher binder content. Tests also covered the use of natural (clinoptilolite) and synthetic (NaP1) zeolites. A 5% addition allowed production temperature to be reduced from 215°C to 180°C, with varied effects on rutting resistance. Furthermore, laboratory tests investigated the influence of crumb rubber on MA 8 mixtures with 35/50 bitumen, applied by wet and dry processes. Rubber addition enhanced stiffness and deformation resistance, especially when incorporated into the binder. The findings confirm that these additives can improve mechanical and technological properties of mastic asphalt and support its broader use in specialized applications.

Keywords:

crumb rubber, mastic asphalt, natural asphalt, rut resistance, stiffness modulus, zeolites

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Bichajło, L., Dąbrowski, P., Kołodziej, K., Kowalski, K., Kubiak, J., & Siwowski, T. (2025). The influence of selected additives on improving the properties of mastic asphalt. Roads and Bridges – Drogi I Mosty, 24(4), 549–561. https://doi.org/10.7409/rabdim.025.036

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