Published: 2024-12-02

Comprehensive temperature performance evaluation of asphalt mastics containing hydrated lime filler based on dynamic shear rheometer testing

Dawid Ryś , Piotr Jaskuła , Cezary Szydłowski

Abstract

The paper focuses on exploring the potential for effective testing of asphalt mastics in the full range of temperatures using the Dynamic Shear Rheometer (DSR) apparatus. Six various types of asphalt mastics were selected to enable the evaluation of the effects of hydrated lime and bitumen modification, both before and after aging. Different DSR tests covered the whole range of service temperatures from –20°C to 64°C. Multiple Stress Creep Recovery test indicated that in the case of mastics with mixed filler (containing hydrated lime) the non-recoverable compliance at the stress level of 3.2 kPa was lower by half indicating much higher resistance to permanent deformations. Linear Amplitude Sweep Test showed that fatigue life calculated at 2.5% strain is almost 3 times greater when adhesive agent or hydrated lime is applied. Low-temperature rheological properties of mastics were investigated based on relaxation tests and it was concluded that mastics with hydrated lime have slightly lower stress relaxation capacity than the remaining mastics with lime filler.

Keywords:

ageing, asphalt mastic, dynamic shear rheometer, hydrated lime, Linear Amplitude Sweep, Multiple Stress Creep Recovery, stress relaxation

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Ryś, D., Jaskuła, P., & Szydłowski, C. (2024). Comprehensive temperature performance evaluation of asphalt mastics containing hydrated lime filler based on dynamic shear rheometer testing. Roads and Bridges - Drogi I Mosty, 23(4), 355–373. https://doi.org/10.7409/rabdim.024.017

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