Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Moisture Susceptibility of Superpave Mixtures with Varying Binder Contents
The process control for the hot-mix asphalt mixtures (HMA) by the Kansas Department of Transportation (KDOT) requires each lot of HMA be produced within ±0.6% of the design binder content. Recent reviews indicate that HMA lots are being produced consistently with lower binder contents. This situation has been exacerbated by the use of higher proportion of Reclaimed Asphalt Pavement (RAP) materials in the HMA mixtures. This project evaluated two moisture susceptibility test methods to assess the effect of asphalt content on the moisture resistance of HMA. Two different commonly used mixtures for overlaying and four varying asphalt contents, optimum and lower, were selected. The Hamburg Wheel Tracking Device (HWTD) test was used to predict moisture damage potential of these mixes. All specimens tested were prepared with the Superpave gyratory compacter. Results indicate that within the tested range, deformation decreases as the binder content decreases. This trend was verified by studying the correlation of the number of wheel passes with the asphalt binder film thickness.
Moisture Susceptibility of Superpave Mixtures with Varying Binder Contents
The process control for the hot-mix asphalt mixtures (HMA) by the Kansas Department of Transportation (KDOT) requires each lot of HMA be produced within ±0.6% of the design binder content. Recent reviews indicate that HMA lots are being produced consistently with lower binder contents. This situation has been exacerbated by the use of higher proportion of Reclaimed Asphalt Pavement (RAP) materials in the HMA mixtures. This project evaluated two moisture susceptibility test methods to assess the effect of asphalt content on the moisture resistance of HMA. Two different commonly used mixtures for overlaying and four varying asphalt contents, optimum and lower, were selected. The Hamburg Wheel Tracking Device (HWTD) test was used to predict moisture damage potential of these mixes. All specimens tested were prepared with the Superpave gyratory compacter. Results indicate that within the tested range, deformation decreases as the binder content decreases. This trend was verified by studying the correlation of the number of wheel passes with the asphalt binder film thickness.
Moisture Susceptibility of Superpave Mixtures with Varying Binder Contents
Uppu, Kiran Kumar (Autor:in) / Hossain, M. (Autor:in) / Ingram, Lon S. (Autor:in) / Kreider, Rick (Autor:in)
Airfield and Highway Pavements 2015 ; 2015 ; Miami, Florida
05.06.2015
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Superpave Binder Implementation
| NTIS | 1999
Transitioning Moisture Susceptibility Testing to Accommodate Superpave Gyratory Compaction
| British Library Conference Proceedings | 2006
Refining superpave asphalt binder characterization
| British Library Online Contents | 2011
| British Library Online Contents | 2018