ABSTRACT
Waterborne epoxy emulsified asphalt mixture (WEEAM) is a highly-strengthened maintenance and repairing material for asphalt pavements. In terms of the strength formation of WEEAM, evaporation of its internal water and curing reaction of epoxy resin are two essential issues. These two issues are both influenced by many factors. Two of these factors, which are the curing temperature and the curing time, are studied. Firstly, by the uniform design test method, an “evaporation-time-temperature” model of WEEAM at its initial curing period is developed and solved; secondly, started with the non-isothermal curing reaction model of the epoxy resin, after discussion of the effect of evaporation on curing reaction of the epoxy resin in waterborne epoxy emulsified asphalt (WEEA), by the test of differential scanning calorimeter(DSC), a non-isothermal curing reaction model of WEEAM is worked out; finally, these two models are verified by the significance analysis or the molded strength test. By these two models, water evaporation ratio and degree of curing reaction of epoxy resin in WEEAM could be predicted, which is significant for conducting the curing process of WEEAM, and then ensuring its strength formation for better maintenance and repairing effects of asphalt pavements.
