The Development Of Epoxy Modified Asphalt And Performance Evaluation

Epoxy asphalt concrete with excellent road performance is the ideal material for overweight traffic road.In recent years more and more steel deck pavement and high-grade road adopts polymer modified asphalt.The asphalt is widespread used of a thermoplastic resin or a rubber polymer modified bitumen with blending,and this material is prepared into a granular or network shape and incorporated into the bitumen in order to improve the strength and toughness of the asphalt.The thermosetting epoxy modified asphalt will be eventually irreversible cured.The cured thing with intricate cross-linked network structure of the stiffening role can achieve the asphalt binder.The role of the resistance to temperature and external forces is significant very much,and its performance will be more excellent than the common asphalt mixtures.Epoxy modified asphalt is adequatly mixed with epoxy resin,hardener and some auxiliary reagent chemical reaction,and eventually forms thermosetting material.Compared with other modified bitumen,the most obvious advantage of epoxy asphalt mixture with asphalt mixing is given to the nature of the road excellent high temperature performance,and inter-layer binding capacity.Then,it makes target mixture proportion design to study on the aggregate gradation scope,optimum asphalt content of mixture,the temperature and time of curing.After target mixture proportion design strength high temperature stability,anti-crack performance in low temperature,water stability and anti-fatigue performance of mixture are researched on.In the end,with the performance of domestic epoxy asphalt,the steel deck pavement construction technology suggestions.Some special requirments for the construction of Epoxy asphalt concrete and important technical points in the course of construction are clarified in order to offer the reference in domestic epoxy asphalt concrete pavement.