Abstract
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 (\(\gamma_{\text{acc}}\)) with accumulated creep time. Burgers model and piecewise curve fitting are used to obtain the viscous component of creep stiffness (\(G_{\text{v}}\)) and creep compliance. The strain–time curves show that the \(\gamma_{\text{acc}}\) decrease significantly and creep-recovery ratios increase gradually with the increase of C/A. The analysis of \(G_{\text{v}}\) and creep compliance illustrates that the \(G_{\text{v}}\) 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.
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Acknowledgments
The authors wish to thank the financial support from National Key Technology R&D Program for the 12th Five-Year Plan (No. 2011BAE27B04), Natural Science Foundation of China (No. 51008033) and China Scholarship Council (No. 201306560016).
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Qin, Xt., Zhu, Sy., Chen, Sf. et al. Comparative study on the deformation behaviors of cement emulsified asphalt mortars. Mater Struct 48, 3241–3247 (2015). https://doi.org/10.1617/s11527-014-0394-4
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DOI: https://doi.org/10.1617/s11527-014-0394-4