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Title: EXPERIMENTAL STUDY ON THE STRUCTURAL BEHAVIOUR OF ASPHALT MIXTURES EXPOSED TO UV RADIATION
EXPERIMENTAL STUDY ON THE STRUCTURAL BEHAVIOUR OF ASPHALT MIXTURES EXPOSED TO UV RADIATION

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Dusan Briliak; Eva Remisova
10.5593/sgem2022/6.1/s26.19
10.5593/sgem2022/6.1
1314-2704
978-619-7603-48-4
English
22
6.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Green Buildings Technologies and Materials
Asphalt mixtures are the most commonly used material in road construction. It is necessary to know the properties of the mixtures and their constituents, as well as the changes in properties that occur during their service life. The demands on road durability are constantly increasing. The main problem with asphalt mixtures is degradation. Due to the effects during asphalt pavement production and service, there is a gradual degradation of properties. One of the degradation factors is the impact of traffic, climate and weather on the road surface. One climatic factor whose influence on pavement degradation has not yet been researched in detail is solar UV radiation. The main cause of ageing is known to be the oxidation of asphalt molecules by oxygen. However, UV radiation also has a photo-oxidation effect on the pavement in service. Oxidation processes cause gradual hardening and embrittlement of the asphalt layer. Understanding these processes could lead to better design of asphalt mixtures and more appropriate material selection to improve performance and extend pavement life. In this article, the results of the measure of the effect of UV radiation on the stiffness changes for AC11 50/70 asphalt mix will be presented. In order to more accurately determine the effect of UV radiation on asphalt mixtures, we used AC11 50/70 mixtures unaged, long-term aged by the loosely distributed mix method, and long-term aged by the compacted specimen method. The modulus of stiffness was measured by the IT-CY laboratory method at 20 °C. The monitored changes in the stiffness of the asphalt mixture were exactly 3 times after 200 hours of UV radiation, a totally of 600 hours of UV radiation.
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[8] Briliak, D., Remisova, E. (2022). Stiffness Modulus of Aged Asphalt Mixtures. In Solid State Phenomena (Vol. 329, pp. 93–100). Trans Tech Publications, Ltd. https://doi.org/10.4028/p-pc709y
[9] EN 12697-26: 2019, Bituminous mixtures - Test methods - Part 26: Stiffness.
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The paper is a result of the research supported by the research project VEGA 1/0337/22 „ Analysis of the influence of road surface texture on skid resistance, driving safety and the potential of particulate matter resuspension “.
conference
https://doi.org/10.5593/sgem2022/6.1/s26.19
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
155-162
04 - 10 July, 2022
website
8647
UV Radiation, Stiffness, IT-CY, Asphalt mixtures, Degradation