What is the main cause of failures in epoxy asphalt concrete?
When properly designed and applied, Epoxy Asphalt has not failed. The few decks that have had the surfacing replaced exhibited fatigue cracking long after the design life of the pavement and after the pavement had been subjected to many years of truck traffic (fatigue cracks that occur after the design life of the pavement can be filled with a thermo-set polymer to extend the life of the surfacing). Insufficient compaction of the surfacing can result in a void content higher than the required 3% max. High void content can result in premature wear and/or fatigue cracking. An excessively high binder content can result in reduced stability and displacement under heavy loads. Early replacement of surfacing showing displacements can prevent progressive failure.
