Two-step Method of Designing Distribution of Material Stiffness in Perpetual Pavement to Prevent Structural Rutting and Fatigue
Aleksander Szwed , Inez Donata Kamińska
AbstractA two-step method for stiffness distribution design with application to perpetual pavements is proposed. In the first step resultant stiffness of asphalt concrete layers is estimated using nomograms obtained via solution of three-dimensional problem of a layered half-space. As controlling parameter vertical strain in the soil base is used. In the second step simplified model of composite beam is applied to predict distribution of stiffness within the asphalt layers. In order to derive design formulas, criterion of equality of stiffness of composite beam's cross-section and stiffness of a homogenous reference layer being a part of layered system, and criterion of horizontal tensile stress reduction at critical locations are used. Obtained formulas require input of thicknesses of individual layers and some material properties, including strain endurance limits.
|Journal series||Procedia Engineering, ISSN 1877-7058|
|Publication size in sheets||0.5|
|Conference||XXV Polish – Russian – Slovak Seminar “Theoretical Foundation of Civil Engineering", 11-07-2016 - 16-07-2016, Zilina, Słowacja|
|Keywords in English||perpetual pavement; long-life pavement; asphalt concrete; stiffness; fatigue; rutting|
|Score|| = 15.0, 28-11-2019, ArticleFromJournalAndMatConfByConferenceseries|
= 15.0, 28-11-2019, ArticleFromJournalAndMatConfByConferenceseries
|Publication indicators||= 0; = 0|
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