Comparative study on the deformation behaviors of cement emulsified asphalt mortars

This study investigates the deformation behaviors of cement emulsified asphalt composite materials (CEACM) with varied cement content. Repeated creep test is implemented to measure the evolution of accumulated strains ( γ acc ) with accumulated creep time. Burgers model and piecewise curve fitting are used to obtain the viscous component of creep stiffness ( G v ) and creep compliance. The strain–time curves show that the γ acc decrease significantly and creep-recovery ratios increase gradually with the increase of C/A. The analysis of G v and creep compliance illustrates that the G v of CEACM increase by orders of magnitude. A cement asphalt ration (C/A) of 1.0 maximizes the elastic component. Incidentally, for C/A is 1.2, the CEACM demonstrate remarkably rigid behavior.