During trial mixing process of conductive gussasphalt (GA) concrete, several technical challenges arise with ice melting on steel bridge deck. In this study, various conductive materials are added to GA concrete in order to prepare mixtures with appropriate constructability, high-temperature stability, and excel conductivity performance. The impacts of conductive material and asphalt concrete type on-field performance are particularly investigated. The ice melting efficiency is evaluated for various combinations of conductive GA concrete materials. Results show that the prepared conductive GA concrete can satisfy satisfactory field performance by increasing the amount of carbon fiber, replacing basalt with functional aggregate, and spraying carbon fiber in the central conductive layer. The best performance is achieved with 0.8% of mixing carbon fiber at the spraying density of 170 g/m2, while the optimal ice melting efficiency is obtained when carbon fiber is sprayed in the central conductive layer.
Preparation and performance of conductive gussasphalt concrete
Transportmetrica A: Transport Science ; 15 , 1 ; 55-70
2019-02-07
16 pages
Article (Journal)
Electronic Resource
English
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