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Influence of Selected Warm Mix Asphalt Additives on Cracking Susceptibility of Asphalt Mixtures

Faculty of Civil and Environmental Engineering, Gdańsk University of Technology, 80-233 Gdańsk, Poland
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Materials 2020, 13(1), 202; https://doi.org/10.3390/ma13010202
Received: 21 November 2019 / Revised: 13 December 2019 / Accepted: 25 December 2019 / Published: 3 January 2020
(This article belongs to the Section Construction and Building Materials)
Warm mix asphalt (WMA) has been widely accepted as a future asphalt paving technology. Besides clear advantages, there are still some concerns regarding durability and long-term performance of pavements made with this type of asphalt mixtures. One of the most important issues is low temperature behaviour of WMA because certain additives used for temperature reduction can affect bitumen properties. This paper presents the evaluation of low-temperature properties of laboratory-produced asphalt concrete for wearing course with selected WMA additives. One type of bitumen with paving grade 50/70 and five WMA additives of different nature (organic, surface tension reducer and combination of both) were used in this study. The production and compaction temperature of mixtures containing WMA additives was 25 °C lower in comparison with the temperature of the reference mix. To assess the susceptibility of WMA to low-temperature cracking, Semi-Circular Bending (SCB) and Thermal Stress Restrained Specimen Test (TSRST) were used. Supplementary rating was made by analysing Bending Beam Rheometer (BBR) test results of asphalt binders. View Full-Text
Keywords: warm mix asphalt; cracking susceptibility; semi-circular bending test; TSRST; low temperature properties warm mix asphalt; cracking susceptibility; semi-circular bending test; TSRST; low temperature properties
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MDPI and ACS Style

Stienss, M.; Szydlowski, C. Influence of Selected Warm Mix Asphalt Additives on Cracking Susceptibility of Asphalt Mixtures. Materials 2020, 13, 202. https://doi.org/10.3390/ma13010202

AMA Style

Stienss M, Szydlowski C. Influence of Selected Warm Mix Asphalt Additives on Cracking Susceptibility of Asphalt Mixtures. Materials. 2020; 13(1):202. https://doi.org/10.3390/ma13010202

Chicago/Turabian Style

Stienss, Marcin, and Cezary Szydlowski. 2020. "Influence of Selected Warm Mix Asphalt Additives on Cracking Susceptibility of Asphalt Mixtures" Materials 13, no. 1: 202. https://doi.org/10.3390/ma13010202

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