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Article

Effect of Surface Active Agent (SAA) on 50/70 Bitumen Foaming Characteristics

1
Department of Building Engineering Technologies and Organization, Faculty of Civil Engineering and Architecture, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland
2
Department of Transportation Engineering, Faculty of Civil Engineering and Architecture, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland
*
Author to whom correspondence should be addressed.
Materials 2019, 12(21), 3514; https://doi.org/10.3390/ma12213514
Received: 10 September 2019 / Revised: 29 September 2019 / Accepted: 21 October 2019 / Published: 26 October 2019
(This article belongs to the Section Construction and Building Materials)
To ensure the standard properties of half-warm asphalt (HWA) mixes produced with foamed bitumen, the binder needs to have the best possible characteristics. One way to attain this is to modify the bitumen before it is foamed. The 50/70 penetration bitumen used in this study, was modified with a surface active agent (SAA) at different rates (0.2%, 0.4%, and 0.6% by wt.). The effect of the modifier on the bitumen properties (penetration, softening point, the Fraass breaking point, dynamic viscosity at 60 °C, 90 °C, and 135 °C) and on the binder foaming parameters (expansion ratio - ER, half-life - HL, foam index - FI) was investigated and the optimum quantity of foaming water was determined. Statistical analysis of the results showed that the addition of 0.6% SAA had the most beneficial effect on the set of 50/70 bitumen standard properties and foaming characteristics. View Full-Text
Keywords: foamed bitumen; surface active agent; expansion ratio; half-life; half-warm mix asphalt foamed bitumen; surface active agent; expansion ratio; half-life; half-warm mix asphalt
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MDPI and ACS Style

Iwański, M.M.; Chomicz-Kowalska, A.; Maciejewski, K. Effect of Surface Active Agent (SAA) on 50/70 Bitumen Foaming Characteristics. Materials 2019, 12, 3514. https://doi.org/10.3390/ma12213514

AMA Style

Iwański MM, Chomicz-Kowalska A, Maciejewski K. Effect of Surface Active Agent (SAA) on 50/70 Bitumen Foaming Characteristics. Materials. 2019; 12(21):3514. https://doi.org/10.3390/ma12213514

Chicago/Turabian Style

Iwański, Mateusz M., Anna Chomicz-Kowalska, and Krzysztof Maciejewski. 2019. "Effect of Surface Active Agent (SAA) on 50/70 Bitumen Foaming Characteristics" Materials 12, no. 21: 3514. https://doi.org/10.3390/ma12213514

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