A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Air permeability of asphalt concrete made with shredded-tire rubber-modified binders and its relationship with porosity
Permeability of bituminous mixtures has been recognized as an important parameter that affects directly the performance and durability of materials. This paper discussed the relationship between air permeability and the porosity of rubberized hot bituminous mixtures. The first striking point was the difference between the porosity and air permeability of asphalt concrete made with 50 and 100 penetration base bitumen. Air permeability of asphalt concrete made with 50 penetration base bitumen was found to be lower than that of the asphalt concrete made with 100 penetration base bitumen, while porosity values were about the same. This can be attributed to the mixing and compaction temperature, which were kept constant during the experimental work for all mixtures. The rheology of the binder during mixing and compaction has great effect on the porosity as well as on air permeability. This paper also indicated that there is a second-order relationship between air permeability and porosity. The coefficient of determination (R2) was found to be the highest for the second-degree polynomial equation among the investigated lines. This value was about 0.856.
Air permeability of asphalt concrete made with shredded-tire rubber-modified binders and its relationship with porosity
Permeability of bituminous mixtures has been recognized as an important parameter that affects directly the performance and durability of materials. This paper discussed the relationship between air permeability and the porosity of rubberized hot bituminous mixtures. The first striking point was the difference between the porosity and air permeability of asphalt concrete made with 50 and 100 penetration base bitumen. Air permeability of asphalt concrete made with 50 penetration base bitumen was found to be lower than that of the asphalt concrete made with 100 penetration base bitumen, while porosity values were about the same. This can be attributed to the mixing and compaction temperature, which were kept constant during the experimental work for all mixtures. The rheology of the binder during mixing and compaction has great effect on the porosity as well as on air permeability. This paper also indicated that there is a second-order relationship between air permeability and porosity. The coefficient of determination (R2) was found to be the highest for the second-degree polynomial equation among the investigated lines. This value was about 0.856.
Air permeability of asphalt concrete made with shredded-tire rubber-modified binders and its relationship with porosity
Celik, Osman Nuri (author)
Journal of Testing and Evaluation ; 33 ; 217-221
2005
5 Seiten, 9 Bilder, 6 Tabellen, 10 Quellen
Article (Journal)
English
Permeabilität , Porosität , Gummi , Bindemittel , Asphalt , Luftdurchlässigkeit , Autoreifen , Rheologie , Berechnung , Polynom , Kompaktieren , Recycling
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