Comparative study on the deformation behaviors of cement emulsified asphalt mortars

Autor: Li Xin, Xian-tao Qin, Shuanfa Chen, Siyue Zhu, Dou Huaibing
Rok vydání: 2014
Předmět:
Zdroj: Materials and Structures. 48:3241-3247
ISSN: 1871-6873
1359-5997
DOI: 10.1617/s11527-014-0394-4
Popis: 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.
Databáze: OpenAIRE
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