This study measures the cross-anisotropy of gyratory, kneading and field-compacted hot-mix asphalt samples of two sizes. One set of cube samples were subjected to compression through the top face and the other set through the side face. In addition, two sets of beam samples were tested for flexure stiffness using load on both the top and side faces. Results show that the side faces can sustain an average compressive stress of 0.89, 0.91 and 0.77 times of the top faces for kneading, gyratory and field-compacted cube samples, respectively. The average flexure stiffness of the side face is 0.85 times of that of the top face. For comparison, finite element model (FEM) was developed to predict pavement stress-strain under wheel load. In addition, stress-strain data from a field-instrumented pavement section on Interstate 40 in New Mexico were collected. The FEM-simulated vertical stress shows a close match with collected stress at cross-anisotropy value of 0.8.
Measuring the cross-anisotropy of hot-mix asphalt
2016
Aufsatz (Zeitschrift)
Englisch
Experimental Investigation of Anisotropy in Asphalt Concrete
Transportation Research Record | 2005
|Experimental Investigation of Anisotropy in Asphalt Concrete
Transportation Research Record | 2005
|Experimental Investigation of Anisotropy in Asphalt Concrete
Online Contents | 2005
|Transportation Research Record | 2013
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