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Modified asphalt mixtures for heavy duty pavement wearing layers
HighlightsModification of asphalt mixture allows a reasonable solution for heavy duty pavement wearing layer.Only polymer modified bitumen should be used for asphalt modification.Bitumen softening point of 80°C and above should be used for heavy duty pavement wearing layer.Modified AC mixture complied with fatigue requirements and showed the highest rut resistance.
AbstractAsphalt pavements perform in a wide range of temperatures, especially in Eastern European countries, where the daily mean temperature of asphalt layers varies from −18°C during winter to 47°C during summer or even higher under more severe climatic conditions. Low temperatures preclude the use of high-stiffness binders because of their high susceptibility to thermal cracking. High temperatures during summer and a heavy static load contribution cause rutting, slippage, and high plastic deformation of heavy duty asphalt pavements. Many research programs on asphalt wearing layers affected by long-lasting high stress have been initiated to address this problem. Our theoretical analysis led to a plan and subsequent detailed laboratory research of modified AC11VS and SMA11S asphalt mixtures. We analyzed 11 different bitumens and the modification of the asphalt mixture aggregate distribution. The experimental results show extremely good rutting performance of the modified asphalt mixtures.
Modified asphalt mixtures for heavy duty pavement wearing layers
HighlightsModification of asphalt mixture allows a reasonable solution for heavy duty pavement wearing layer.Only polymer modified bitumen should be used for asphalt modification.Bitumen softening point of 80°C and above should be used for heavy duty pavement wearing layer.Modified AC mixture complied with fatigue requirements and showed the highest rut resistance.
AbstractAsphalt pavements perform in a wide range of temperatures, especially in Eastern European countries, where the daily mean temperature of asphalt layers varies from −18°C during winter to 47°C during summer or even higher under more severe climatic conditions. Low temperatures preclude the use of high-stiffness binders because of their high susceptibility to thermal cracking. High temperatures during summer and a heavy static load contribution cause rutting, slippage, and high plastic deformation of heavy duty asphalt pavements. Many research programs on asphalt wearing layers affected by long-lasting high stress have been initiated to address this problem. Our theoretical analysis led to a plan and subsequent detailed laboratory research of modified AC11VS and SMA11S asphalt mixtures. We analyzed 11 different bitumens and the modification of the asphalt mixture aggregate distribution. The experimental results show extremely good rutting performance of the modified asphalt mixtures.
Modified asphalt mixtures for heavy duty pavement wearing layers
Vaitkus, Audrius (author) / Vorobjovas, Viktoras (author) / Kleizienė, Rita (author) / Šernas, Ovidijus (author) / Gražulytė, Judita (author)
Construction and Building Materials ; 131 ; 503-511
2016-11-12
9 pages
Article (Journal)
Electronic Resource
English
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