Innovative SMA-MA mixture for bridge asphalt pavement Piotr Radziszewski 1, a , Michał Sarnowski 1, b , Jerzy Piłat 1, c , Paweł Mieczkowski 2, d , Karol J. Kowalski 1, e , Jan B. Król 1, f 1 Faculty of Civil Engineering, Warsaw University of Technology, Warsaw, Poland 2 Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology, Szczecin, Poland a p.radziszewski@il.pw.edu.pl b m.sarnowski@il.pw.edu.pl c j.pilat@il.pw.edu.pl d pawel.mieczkowski@zut.edu.pl e k.kowalski@il.pw.edu.pl f j.krol@il.pw.edu.pl Digital Object Identifier (DOI): dx.doi.org/10.14311/EE.2016.214 ABSTRACT Paper presents innovative technological solution applied in bridge pavement. New asphalt mixture, called SMA-MA, uses benefits of both mastic asphalt (MA) widely used as a bridge waterproofing layer and stone mastic asphalt (SMA) and provides more durable mixture. According to the wide research plan, several mixtures were tested for their resistance to permanent deformation, water susceptibility, fatigue and aging resistance. Conducted research proved that such mixture can be successfully used as waterproofing and protective layer as well as traffic carrying layer. In comparison to the typically used asphalt mixtures (SMA, MA or asphalt concrete), SMA-MA presents: mixture resistant to permanent deformation with very low air voids content (about of 0.5%) reachable with typical asphalt mixture compaction temperature of 180°C. The temperature of application SMA-MA mixture is about 30°C less than temperature of mastic asphalt, but the ability of sealing is comparable. SMA-MA mixture is a fast application technology using conventional equipment. In climatic conditions of middle Europe showing high number of freezing- thawing cycles, it is recommended to use such innovative technological solution on bridge decks. Keywords: Mastic Asphalt, Mixture design, Stone Mastic Asphalt, Stiffness, Waterproofing E&E Congress 2016 | 6th Eurasphalt & Eurobitume Congress | 1-3 June 2016 | Prague, Czech Republic