Epoxy asphalt mixture (EAM) is a thermosetting material, and its strength develop law depends not only on temperature, but also on curing time, while the strengths of most other asphalt mixtures are only a function of temperature. This complication in the strength developing procedure of EAM has brought many difficulties to its construction. To find a better way to approach the construction of EAM, the strength developing procedure of EAM was studied. Firstly, the viscosities of epoxy asphalt binder (EAB) in different temperatures were tested to investigate the viscosity developing law of EAB. Secondly, a thermokinetic analysis was conducted based on the differential scanning calorimetry (DSC) test to establish a curing model of EAB. Thirdly, the performance of EAM under different curing times and at different temperatures is studied to investigate the strength developing law of EAM. The test results indicated that the optimum viscosity range for EAM construction is from 1000mPa⋅s to 3000mPa⋅s, and the optimum laboratorial curing condition is 5 hours at 130°C. Finally, a curing model of EAB was established and verified on the basis of the test results.
Research on Strength Developing Procedure of Epoxy Asphalt Mixture
Ninth Asia Pacific Transportation Development Conference ; 2012 ; Chongqing, China
Sustainable Transportation Systems ; 558-566
2012-06-28
Conference paper
Electronic Resource
English
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