Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hot Mix Asphalt for Intersections in Hot Climates
Rutting of hot mix asphalt (HMA) pavement at or near intersections is very common both in cold and hot climates. Obviously, the problem is more acute in hot climates compared to cold climates because the stiffness of HMA decreases with increase in pavement temperature. In most cases, there is no significant rutting in the same asphalt pavement structure away from the intersections under fast moving traffic. This indicates a need for a different asphalt mix at or near intersections, which can sustain slow or standing traffic loads without any permanent deformation. A field investigation of rutting near five signalized intersections in Pittsburgh, Pennsylvania indicated the following causes related to in-place HMA: (a) low voids in the mineral aggregate (VMA), (b) low air voids, and (c) use of subrounded to subangular sand.
Hot Mix Asphalt for Intersections in Hot Climates
Rutting of hot mix asphalt (HMA) pavement at or near intersections is very common both in cold and hot climates. Obviously, the problem is more acute in hot climates compared to cold climates because the stiffness of HMA decreases with increase in pavement temperature. In most cases, there is no significant rutting in the same asphalt pavement structure away from the intersections under fast moving traffic. This indicates a need for a different asphalt mix at or near intersections, which can sustain slow or standing traffic loads without any permanent deformation. A field investigation of rutting near five signalized intersections in Pittsburgh, Pennsylvania indicated the following causes related to in-place HMA: (a) low voids in the mineral aggregate (VMA), (b) low air voids, and (c) use of subrounded to subangular sand.
Hot Mix Asphalt for Intersections in Hot Climates
P. S. Kandhal (Autor:in) / R. B. Mallick (Autor:in) / E. R. Brown (Autor:in)
1998
20 pages
Report
Keine Angabe
Englisch
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